Vertical Urbanism: Aligning High-Rise Development with Sustainable Urban Goals in Nigerian Cities

Vertical Urbanism: Aligning High-Rise Development with Sustainable Urban Goals in Nigerian Cities | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Vertical Urbanism: Aligning High-Rise Development with Sustainable Urban Goals in Nigerian Cities Haliru Aminu Ahmad This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7185765/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract As Nigeria's urban centres continue to experience significant population growth and spatial expansion, high-rise developments are increasingly being adopted to address land scarcity, housing demand, and infrastructure stress. However, the extent to which these vertical structures align with the United Nations Sustainable Development Goals (UN-SDGs), particularly SDG 11 (Sustainable Cities and Communities), remains underexplored. This study examines the architectural, environmental, and social performance of high-rise buildings in Lagos, Abuja, and Port Harcourt, assessing their contribution to sustainable urban growth. A mixed-methods approach was employed, involving case study analysis, building energy simulations with TAS software, structured surveys of 158 high-rise occupants, and interviews with 24 key stakeholders. The results show that, while high-rise buildings provide spatial efficiency and vertical density, they often fall short in terms of environmental performance, inclusivity, affordability, and renewable energy integration. Energy simulation results indicate that most buildings exceed national baseline cooling load standards, while survey data highlight low user satisfaction in areas such as thermal comfort and sense of community. The study concludes that vertical urbanism in Nigeria require a more deliberate, context-sensitive approach that incorporates passive design principles, smart technologies, green infrastructure, and inclusive planning. Policy recommendations include developing a national high-rise code, mandating green building certification, and fostering public-private partnership for sustainable vertical housing. Architecture, Design and Planning City Management and Urban Policy High-rise development Vertical urbanism Sustainable cities Nigeria SDG 11 Energy efficiency Urban planning Building performance Passive design Figures Figure 1 Figure 2 Figure 3 Figure 4 1. Introduction The rapid urbanization of Nigeria's main cities, including Lagos, Abuja, and Port Harcourt, has created unprecedented issues in urban housing, land use, infrastructure development, and environmental sustainability. With urban populations expected to continue growing rapidly due to rural-urban migration, high birth rates, and economic centralization, urban planners and policymakers face a critical challenge: how to accommodate this increase in a sustainable manner. Traditional horizontal urban expansion is no longer feasible due to land scarcity, rising infrastructural costs, and environmental degradation. As a result, vertical urbanism, particularly high-rise development, has emerged as a potential solution to these expanding urban stresses. High-rise buildings provide a strategic architectural and planning solution by increasing land use efficiency, minimizing urban sprawl, and potentially integrating sustainable technologies. However, their significance in promoting sustainable urban development in Nigeria is underexplored and underutilized. The United Nations Sustainable Development Goals (SDGs), particularly SDG 11 (Sustainable Cities and Communities), emphasize the importance of inclusive, safe, resilient, and sustainable urban spaces. However, translating these global goals into practical architectural and urban planning practices, particularly in the vertical domain, poses both an opportunity and a challenge. This study examines the potentials, constraints, and contextual strategies for aligning high-rise developments into Nigeria's broader framework of sustainable urban goals. The research aims to investigate how vertical architecture might be integrated into sustainable urban frameworks, with a focus on Lagos, Abuja, and Port Harcourt, which represent Nigeria's demographic, economic, and infrastructural dynamics. In doing so, it addresses critical challenges such as environmental performance, land use optimization, socioeconomic equity, and architectural innovation. The originality of this research stems from its endeavor to bridge the gap between architectural verticality and sustainable urbanization in Nigeria. It proposes a context-specific framework for high-rise development, drawing on multidisciplinary concepts from urban planning, environmental design, architectural theory, and sustainable development. Finally, this paper aims to provide realistic policy suggestions, design strategies, and implementation frameworks to guide future vertical urban efforts in Nigerian cities. 2. Literature Review 2.1 Urbanization and the Nigerian Context Nigeria is currently experiencing one of the most rapid urban transformations in Sub-Saharan Africa. According to UN-Habitat ( 2023 ), over 52% of Nigerians presently live in cities, with the percentage expected to climb to more than 70% by 2050. This rise is most obvious in Lagos, which has an estimated population of more than 20 million people, followed by Abuja and Port Harcourt, both of which are experiencing tremendous infrastructure and demographic changes. This tendency has resulted in increased demand for land, services, and housing, which frequently leads to slum proliferation, traffic congestion, environmental degradation, and socioeconomic inequalities (Akinmoladun & Oluwoye, 2021 ; Oduwaye, 2020 ). Conventional low-rise and horizontal developments have proven insufficient in meeting demand, owing to their extensive land requirements and inefficient service delivery. This has motivated academics and urban theorists to promote compact city models and vertical growth paradigms (UN-Habitat, 2020 ; Jenks & Burgess, 2000 ). 2.2 High-Rise Development: Global Trends and Local Realities Globally, high-rise buildings are widely recognized as tools for urban densification and sustainability, notably in cities like Singapore, Tokyo, New York, and Dubai. These cities have effectively implemented vertical strategies to integrate residential, commercial, and recreational purposes while improving environmental performance with energy-efficient technology, green facades, and smart building systems (Yeang, 2006 ; Wood, 2014 ). However, high-rise development in Nigeria is still evolving, with Lagos leading the way with commercial and mixed-use buildings like Eko Atlantic City and the Nigerian External Communications Complex. Abuja and Port Harcourt have also seen an increase in high-rise government and corporate buildings. However, planning, regulation, and sustainability integration for these structures are frequently inconsistent or absent (Adedeji & Ayoola, 2022 ). 2.3 High-Rise Architecture and Sustainability The relationship between high-rise buildings and sustainability is multidimensional. On the one hand, vertical buildings can reduce land consumption, increase walkability, and efficiently concentrate infrastructure (Lehmann, 2015 ). However, if not carefully planned, they can contribute to urban heat islands, wind tunnel effects, and social isolation (Ng, 2009 ). As a result, sustainable high-rise design necessitates a careful balance of energy efficiency, social integration, environmental responsiveness, and economic viability. In the Nigerian context, sustainable high-rise design is hampered by unpredictable power supply, a scarcity of sustainable construction materials, and poor urban governance. Nonetheless, recent innovations such as the Alaro City project and the Eco Atlantic initiative are seeking to integrate renewable energy, rainwater collection, and smart technologies, indicating a potential paradigm shift (Ameh & Owoicho, 2023 ). 2.4 United Nations Sustainable Development Goals (UN-SDGs) and the Built Environment The UN-SDGs, particularly SDG 11, demand for cities that are inclusive, safe, resilient, and sustainable. This goal necessitates rethinking urban form, governance, and architecture. High-rise buildings, when integrated with green infrastructure, inclusive housing policies, and mixed-use functions, can greatly contribute to this objective (UNDP, 2023 ). Studies have shown that Vertical developments can support several SDGs, such as SDG 7 (Affordable and Clean Energy), by integrating solar PV systems. SDG 13 (Climate Action) by reducing the carbon footprint through vertical density and SDG 9 (Industry, Innovation, and Infrastructure) by promoting modern construction technologies. However, there is frequently a gap between high-rise development in Nigeria and these sustainable development goals due to a lack of policy coherence, inadequate stakeholder participation, and insufficient data-driven planning (Onatu, 2021 ). 2.5 Challenges and Gaps in Nigerian Vertical Urbanism While high-rise buildings have proliferated in the selected cities in Nigeria, their expansion has not always been consistent with sustainable principles. Challenges include such as ineffective urban planning and enforcement, lack of integration of passive design strategies and renewable energy systems, inadequate consideration of socio-cultural and climatic contexts and absence of participatory urban design involving local communities. Furthermore, empirical research linking vertical architecture to sustainability results in Nigeria reveal a significant knowledge gap. Most existing research focuses on technical or economic factors without sufficiently exploring social, environmental, or policy implications (Adefolami & Afolabi, 2020 ). The literature emphasizes the urgent necessity for a localized vertical development paradigm that aligns architectural innovation with Nigeria's urban sustainability needs. While global models offer useful insights, Nigerian cities require context-specific strategies that take into account climatic responsiveness, cultural relevance, economic realities, and strong policy frameworks. This study aims to bridge that gap by proposing a strategic alignment between high-rise development and sustainable urban goals adapted to Nigeria's distinct urban context. 3. Methodology 3.1 Research Design This study uses a mixed-methods research strategy that combines qualitative and quantitative approaches. The rationale behind this is to capture the multifaceted dimensions of high-rise development, which include architectural, environmental, and social performance, as well as regulatory and planning implications. The study employed case study analysis, structured field surveys, building performance simulations, and key informant interviews in three major Nigerian cities: Lagos, Abuja, and Port Harcourt. 3.2 Case Study Selection Criteria The following criteria were used in selecting case study buildings: Minimum of 10 storeys (classified as high-rise by the Nigerian Urban and Regional Planning Law) Located in high-density urban cores Functional use as residential, commercial, or mixed-use buildings Accessibility for data collection and modeling Construction completed between 2010 and 2024 Selected case studies include: Lagos: Eko Pearl Tower, Civic Tower, and Nestoil Tower Abuja: Ministry of Transportation Headquarters, World Trade Center Tower, and NNPC Towers Port Harcourt: Hotel Presidential Tower, GRA High-Rise Apartments 3.3 Data Collection Methods 3.3.1 Field Observation and Architectural Documentation Architectural documentation consisted of on-site observations, photographic surveys, and schematic layout analysis of each high-rise building to evaluate spatial configuration, façade orientation, ventilation systems, and passive design integration. 3.3.2 Key Informant Interviews In-depth interviews were conducted with: Urban planners (6) Architects and structural engineers (5) Municipal officials and building regulators (4) Residents and facility managers (9) Semi-structured interviews focused on sustainability awareness, policy barriers, implementation experiences, and user satisfaction. 3.3.3 Questionnaire Surveys A total of 180 questionnaires were distributed across the three cities (60 per city), targeting occupants of high-rise buildings. The survey assessed: Energy consumption behavior Perception of indoor comfort Water and waste management practices Accessibility and safety concerns Community integration Response rate: 88%, with 158 valid responses. 3.3.4 Building Energy Performance Simulation Energy simulations were conducted using TAS (Thermal Analysis Software) for three selected case study buildings (one per city). Input parameters included: Climatic data from NiMet (Nigerian Meteorological Agency) Building envelope materials and U-values Occupancy patterns Natural and mechanical ventilation profiles Internal heat gains Outputs analyzed included cooling loads, annual energy consumption, thermal comfort levels (PMV index), and potential solar energy yield. 3.4 Data Analysis Techniques Qualitative data (interviews) were transcribed and thematically analyzed using NVivo 14 software. Quantitative survey data were analyzed using SPSS 27. Descriptive statistics (mean, frequency, standard deviation) and inferential statistics (ANOVA, Pearson’s correlation) were applied. Simulation results were benchmarked against Nigerian Building Energy Efficiency Code (BEEC) standards and LEED rating benchmarks. 4. Results and Discussion 4.1 Architectural and Environmental Performance 4.1.1 Spatial and Design Features The majority of the high-rise buildings studied lacked passive design elements including cross-ventilation corridors, shading devices, and green façade. Only 30% incorporated double-glazed windows or solar control films, and less than 10% installed rooftop gardens or rainwater collecting systems. Buildings in Abuja, as seen in Fig. 2 , often featured more modern planning with a greater attention on green technologies due to increased regulatory enforcement compared to Lagos and Port Harcourt. 4.1.2 Energy Performance Simulation Simulation results revealed that buildings in Lagos consumed 38% more energy annually for cooling compared to their counterparts in Abuja and Port Harcourt due to poor envelope insulation and excessive glazing facing direct sunlight. Figure 3 summarizes simulation results: (Source: Author, 2025) Key Insight: Only 2 out of 9 buildings met the BEEC baseline energy efficiency standards. Solar PV potential was high across all rooftops but remained unutilized. 4.2 Socio-Economic and User Experience 4.2.1 Affordability and Access Survey results revealed that 67% of occupants in Abuja and Lagos indicated that rent in high-rise buildings was "highly unaffordable." Over 80% of respondents emphasized that high-rise living was accessible mainly to elites or expatriates, contradicting the inclusive aims of SDG 11. 4.2.2 Social Equity and User Experience Surveys showed affordability remains a major barrier—67% of respondents said rents were unaffordable. Security scored highest in user satisfaction (4.2/5), while thermal comfort and community integration scored poorly (2.8 and 2.4 respectively). Table 1 Satisfaction and Livability Scores (1–5 Scale) Category Avg. Score (1–5) Thermal Comfort 2.8 Indoor Air Quality 3.1 Accessibility 3.5 Security 4.2 Sense of Community 2.4 These results indicate that while high-rises offer safety and prestige, they lack in community integration and user comfort. 4.3 Planning, Policy, and Regulatory Gaps Interviews with urban planners revealed: Absence of a national high-rise development code Inconsistent implementation of the Nigerian Building Code No mandatory green building certification or climate-responsive design enforcement Urban growth patterns remain speculative and uncoordinated, leading to fragmented vertical development, often without accompanying infrastructure. 4.4 Sustainability Assessment The sustainability dimension of vertical development in Nigerian cities remains inconsistent, especially when measured against SDG 11 targets such as environmental responsibility, inclusiveness, and resilience. Field observations and secondary data revealed that, while vertical buildings conserve land, they frequently fall short of energy efficiency and accessibility. In Lagos, premium high-rises like the Nestoil Tower (Fig. 4 ) and Eko Atlantic incorporate sustainability features such as rooftop solar power, energy-efficient double-glazed windows, and waste management systems. However, these features are most commonly found in high-end business or residential buildings designed for elite users. In mid-tier or speculative developments, cost-saving frequently outweighs sustainability, resulting in poor ventilation, a lack of green spaces, and a high reliance on diesel generators. Similarly, in Abuja, developments such as the World Trade Center show efficient land use and adherence to building codes, but there is little incorporation of renewable energy or green building certification. Sustainability is more spatial than systemic, generally focusing on aesthetics rather than performance. Despite being a landmark, Port Harcourt's Hotel Presidential Tower has no documented sustainability credentials other than its centaralized location and connectivity to the city's commercial zones. A rapid sustainability audit using adapted UN-Habitat indicators revealed that most vertical developments have high land use efficiency but low to moderate affordability, inclusiveness, and resilience. Water conservation technologies, energy monitoring systems, and passive cooling strategies were notably absent in both residential and commercial towers. Overall, the sustainability of Nigeria's vertical growth appears to be aspirational but fragmented. Vertical development may continue to perpetuate unsustainable urban patterns at greater heights unless building codes are strictly enforced, incentives for green certification are provided, and locally appropriate climate design is integrated. Despite the challenges, opportunities abound: Solar integration can cut energy expenses by up to 35%. Mixed-use high-rises with ground-floor retail and community services can enhance social sustainability. Smart technology, such energy monitoring and greywater recycling, can improve environmental performance. To integrate high-rise building with sustainability measures, a strategic framework should prioritize policy reforms to mandate green design, public-private partnerships for inclusive vertical housing, and climate-sensitive design adapted to Nigerian zones. 4.5 Comparative Insights When comparing Lagos, Abuja, and Port Harcourt, there are significant differences in the scale, motivation, and regulatory framework of vertical development. Lagos represents the future of vertical development led by the private sector. Due to land constraints and population pressures, the city's high-rise growth is primarily market-driven, particularly in Victoria Island, Lekki, and Ikoyi. Projects like Eko Atlantic demonstrate ambitious smart-city goals, but they are frequently criticized for social exclusion and environmental vulnerability, particularly in the context of coastal flooding and sea-level rise. In contrast, Abuja takes a more formalized and policy-driven approach. The capital's master-planned form provides regulatory clarity, particularly in regions such as the Central Business District, but vertical expansion is often restrained. State-led projects dominate, with a focus on building regulations but little creativity in green design or social housing integration. Port Harcourt, an oil-rich city with growing commercial prominence, offers a unique hybrid. Developments like the Hotel Presidential Tower, depicted in Fig. 3 , occur in response to both economic ambition and urban modernization pressures. However, regulatory enforcement is weaker, and infrastructure support, particularly water and energy systems, lags behind vertical growth. These comparative insights suggest that Nigeria's vertical prospects are diverse and influenced by city-specific dynamics. Lagos leads in innovation but struggles with inclusivity; Abuja succeeds in formal regulation but lacks green ambition; and Port Harcourt has the potential for regional verticalization but faces uncoordinated expansion. Policy responses must be regionally diverse, locally anchored, and strategically aligned with the sustainability imperatives. 5. Conclusion This study critically examined the relationship between high-rise design and sustainable urban development in three of Nigeria's fastest-growing cities: Lagos, Abuja, and Port Harcourt. Through comprehensive case studies, field surveys, energy simulations, and stakeholder interviews, The study illuminated both the potential and the challenges associated with vertical urbanism in achieving the Sustainable Development Goals (SDGs), particularly SDG 11 (Sustainable Cities and Communities). Findings revealed that while high-rise developments have evident advantages in terms of land use efficiency, space optimization, and urban density management, they frequently fall short in environmental sustainability, energy performance, affordability, and social inclusion. For example, the majority of the buildings assessed consumed more energy than the baseline standards established by Nigeria's Building Energy Efficiency Code (BEEC), and the majority lacked integrated renewable energy systems or passive design strategies. Furthermore, livability indices such as thermal comfort, indoor air quality, and sense of community performed below expectations, notably in Lagos and Port Harcourt. One of the most significant gaps observed is the mismatch between policy intentions and practical implementation. Urban planning in Nigeria continues to encourage speculative, top-down, and often elitist development approaches that exclude larger segments of the population. Furthermore, efforts to assure long-term high-rise growth are undermined by a lack of comprehensive regulatory frameworks, ineffective enforcement mechanisms, and limited professional capacity. Nonetheless, the study identified pathways to positive transformation. Buildings that adopted mild passive strategies and incorporated shading, efficient glazing, or compact spatial planning had superior environmental performance. Abuja, for example, benefits from increased regulatory control and has shown more promising outcomes in both design and performance parameters. In conclusion, while vertical urbanism holds significant promise for addressing the space and sustainability challenges of Nigerian cities, attaining its full potential necessitates careful, context-specific planning, institutional reforms, and stakeholder participation. Sustainable high-rise development must be more than just an architectural trend, but a strategic tool for inclusive, resilient, and environmentally responsible urban development. 6. Recommendations Based on the research findings, the following recommendations are proposed to guide the alignment of high-rise development with Nigeria's sustainable urban goals: Policy Development Create a national high-rise code specific to Nigeria's climate. Green Certification Make energy efficiency certification mandatory. Passive design prioritizes shading, cross-ventilation, and insulation. Technological integration encourage solar panels, smart meters, and greywater systems. Furthermore, invest in digital urban tools (such as BIM and GIS) for planning, monitoring, and transparency. Equity Measures Require inexpensive housing and accessible design. Furthermore, provide incentives for developers to incorporate low- and middle-income housing into high-rise proposals. Capacity Building Train professionals about sustainable practices. Public engagement Involve communities in planning decisions. Future Research study long-term livability, lifecycle implications, and urban climate effects. 7. Cross-Cutting Barriers to Sustainable Vertical Development Despite the promise of vertical urbanism in addressing Nigeria's spatial and sustainability issues, several systemic barriers remain across institutional, technical, and socioeconomic dimensions. These barriers are not unique to one phase of urban development but cut across policy formation, planning, construction, maintenance, and governance. 7.1 Institutional Fragmentation : A key impediment is the fragmentation between federal, state, and local urban authorities. Planning documents often conflict, responsibilities overlap, and enforcement is ineffective. For example, Lagos and Abuja operate under different planning statutes, with minimal coordination at the national level. This complicates efforts to set sustainability benchmarks or implement a national high-rise framework. 7.2 Corruption and Regulatory Capture : Corruption in the building approval and land-allocation processes remains a pervasive problem. Developers often use bribery to avoid environmental assessments or obtain permits for unauthorized high-rise developments. This undermines trust in institutions and skews vertical expansion toward elite interests. 7.3 Data Deficiency : The lack of reliable and real-time urban data is a significant constraint. Most cities lack comprehensive geospatial databases on building heights, energy consumption, and land use zoning. This inhibits planners' capacity to simulate vertical growth scenarios and adequately monitor sustainability implications. 7.4 Capacity Gaps : There is a critical shortage of local expertise in green high-rise design, structural engineering, and digital modelling. Nigeria's universities and training institutes have not fully integrated sustainable architecture or smart city technology into their courses, resulting in an overreliance on foreign consultants. 7.5 Socio-Spatial Inequality : Middle and lower-income individuals sometimes lack access to vertical developments, especially in Lagos and Abuja. The absence of inclusive finance approaches and affordable vertical housing contributes to urban exclusion, while informal settlements grow horizontally. These cross-cutting challenges highlight the need for integrated governance, transparency in urban processes, and stronger accountability mechanisms in aligning vertical urbanism with national and global sustainability goals. 8. Future Research Directions While this study provides a thorough examination of vertical urbanism and its alignment with the SDGs in Nigerian cities, significant research gaps exist for future inquiry. 8.1 Affordable Vertical Housing Models : Future research should explores how to design and fund high-rise buildings for low- and middle-income population. This includes analyzing cooperative housing schemes, public housing retrofits, and microfinance mechanisms appropriate for vertical situations. 8.2 Vertical Urbanism in Secondary Cities : The majority of current research and investment is focused on major cities such as Lagos and Abuja. However, secondary cities including Ibadan, Kano, Uyo, and Kaduna are also experiencing vertical transitions. Comparative studies are required to examine how various governance structures and growth pressures shape their high-rise trajectories. 8.3 Climate-Responsive High-Rise Design : Further empirical research is needed on climate-adaptive architecture in tropical African contexts. These should examine the performance of passive cooling systems, renewable energy integration, and vertical green spaces in reducing heat loads and emissions 8.4 Circular Construction and Material Innovation : There is an increasing need to study how circular economy principles might be included into high-rise development in Nigeria. This involves lifecycle assessments, reuse of demolition materials, and developing low-carbon alternatives to concrete and steel. 8.5 Social Impacts and Mental Health : Few studies have examine the social dimensions of vertical living in African settings. Future studies should explore resident satisfaction, neighborhood cohesion, mental health outcomes, and the effect of isolation or overcrowding in high-rises. By addressing these research areas, academicians, policymakers, and practitioners can create more inclusive, resilient, and context-specific models for sustainable vertical development in Nigeria and beyond. Declarations Ethical Considerations Ethical approval was obtained from Federal University Birnin Kebbi Research Ethics Committee. All participants provided informed consent, and data were anonymized to protect identities. Conflicts of Interest The authors declare no conflict of interest. Data Availability Statement The data presented in this study are available on request from the corresponding author. Informed Consent Statement Informed consent was obtained from all subjects involved in the study. Funding This research received no external funding. Author Contributions Conceptualization, H.A.A.; methodology, H.A.A.; formal analysis, H.A.A.; writing—original draft preparation, H.A.A.; writing—review and editing, H.M.S.; supervision, H.M.S. References Adedeji YMD, Ayoola WA (2022) High-rise buildings in Nigeria: An assessment of regulatory compliance and construction challenges. Nigerian J Sustainable Built Environ 13(1):34–47. https://doi.org/10.4314/njsbe.v13i1.3 Adefolami AO, Afolabi OO (2020) A critical review of urban housing and vertical development in Lagos. Nigeria J Archit Urbanism 44(2):128–138. https://doi.org/10.3846/jau.2020.12230 Adeniran T (2022) Sustainable Urban Development in Nigeria: The Role of High-Rise Buildings. J Urban Stud 45(3):201–217 Akinbamijo OB (2018) Vertical Housing: A Paradigm Shift in Nigerian Urban Development. Nigerian J Hous Built Environ 9(1):45–59 Akinmoladun OI, Oluwoye J (2021) Urban housing development in Nigeria: Challenges and policy implications. 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United Nations Human Settlements Programme, Nairobi. https://unhabitat.org/nigeria-urban-profile United Nations (2015) Transforming our world: The 2030 Agenda for Sustainable Development. UN Publishing Wood A (2014) Sustainable vertical urbanism: Balancing sustainability and livability in high-rise design. Council Tall Build Urban Habitat J 2(1):17–27 Wood A (2014) The Future of Tall Buildings: Sustainability and Performance. Council Tall Build Urban Habitat J 3(1):15–22 World Bank (2023) Urbanization in Nigeria: Trends, Opportunities, and Challenges Yeang K (2006) Eco-design: A manual for ecological design. Wiley-Academy Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7185765","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":489100956,"identity":"a154533a-497f-4eba-bb60-65ecdd4c0837","order_by":0,"name":"Haliru Aminu Ahmad","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/UlEQVRIiWNgGAWjYBACAwbmhgNgFjMQf7BhSJAA0hL4tTAitDDOSCNSC5zDzEOMFnP2g42HK9sY5HXbeY9J2yQczpNsYD54m4fhjl0DDi2WPYkNB8+2MRhuO8yXJp2TcLhYmoEt2ZqH4VkyLi0GB4BaGtsYGLcd5jGTzv1xOHEeA5DBw3A4Gadfzj8Ea7EHa7FIAGnh/4Zfyw2ILYlgLQxALbMZeNhAWuxwawHa0nBOIhmoxdiyJyG9WLKZzdhyjsHhBNwOSz78saHMxnbb+TOGN34kWOdJHG9+eONNxWF7XFqgADkimMFGMSQ2ENCDCQjZMgpGwSgYBSMHAAAJUFfmnNPeMQAAAABJRU5ErkJggg==","orcid":"","institution":"Federal University Birnin Kebbi","correspondingAuthor":true,"prefix":"","firstName":"Haliru","middleName":"Aminu","lastName":"Ahmad","suffix":""}],"badges":[],"createdAt":"2025-07-22 10:17:59","currentVersionCode":1,"declarations":{"humanSubjects":true,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":true,"humanSubjectConsent":true,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-7185765/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7185765/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":87711379,"identity":"7b5eb058-b658-41c0-b953-3fe945a55829","added_by":"auto","created_at":"2025-07-28 08:43:07","extension":"jpeg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":63018,"visible":true,"origin":"","legend":"\u003cp\u003e\u003cem\u003eFigure 2:\u003c/em\u003e World Trade Centre, Abuja-an example of formal high-rise development in Nigeria’s planned capital. This reflects Abuja’s top-down vertical development in the central business district (Photo: Author, 2025)\u003c/p\u003e","description":"","filename":"floatimage1.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7185765/v1/ad7fd5bcc83d6947ed4d2d85.jpeg"},{"id":87712569,"identity":"9c2aa945-4ce7-416b-9c0c-c8e556a633f5","added_by":"auto","created_at":"2025-07-28 08:51:07","extension":"png","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":53350,"visible":true,"origin":"","legend":"\u003cp\u003e\u003cem\u003eFigure 2:\u003c/em\u003e Comparative Analysis of Energy and Environmental Performance for Three High-Rise Buildings in Nigeria. The chart illustrates key performance metrics for Eko Pearl Tower (Lagos), WTC Tower (Abuja), and Hotel Presidential Tower (Port Harcourt). Metrics include annual cooling load (kwh), rooftop solar potential (kw), and thermal comfort index. The visual highlights the varying environmental performance levels, helping to assess each building’s suitability for sustainable retrofitting or energy-efficient design improvement.\u003c/p\u003e\n\u003cp\u003e(Source: Author, 2025)\u003c/p\u003e","description":"","filename":"floatimage2.png","url":"https://assets-eu.researchsquare.com/files/rs-7185765/v1/229abdebf77457f4f26d1b95.png"},{"id":87714087,"identity":"cee2e5ea-d463-4fee-be5d-55f3d650b192","added_by":"auto","created_at":"2025-07-28 08:59:07","extension":"jpeg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":69217,"visible":true,"origin":"","legend":"\u003cp\u003e\u003cem\u003eFigure 4:\u003c/em\u003e Nestoil Tower, Victoria Island, Lagos-an exemplar of green high-rise architecture in Nigeria, incorporating solar technology, energy-efficient facades, and LEED-certified materials. (Source: Nestoil Tower, Lagos, 2025. \u003cem\u003eUsed under Creative Commons License\u003c/em\u003e)\u003c/p\u003e","description":"","filename":"floatimage3.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7185765/v1/4cf1d59fba07c7d06d50ca71.jpeg"},{"id":87711380,"identity":"0f25117e-4482-4cef-bf35-64f8ff4c5d63","added_by":"auto","created_at":"2025-07-28 08:43:07","extension":"jpeg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":61367,"visible":true,"origin":"","legend":"\u003cp\u003e\u003cem\u003eFigure 3:\u003c/em\u003e Hotel Presidential Tower in Port Harcourt, an iconic mixed-used high-rise marking the city’s oil-economy-driven vertical expansion (Photo:Author, 2025)\u003c/p\u003e","description":"","filename":"floatimage4.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7185765/v1/e06c9de3840a993967e4edd6.jpeg"},{"id":87715153,"identity":"9532414a-6e55-4a4d-bde4-29fe16f0035c","added_by":"auto","created_at":"2025-07-28 09:07:10","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1314749,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7185765/v1/96104a15-ff42-44d7-8234-efe8357480a9.pdf"}],"financialInterests":"The authors declare no competing interests.","formattedTitle":"\u003cp\u003e\u003cstrong\u003eVertical Urbanism: Aligning High-Rise Development with Sustainable Urban Goals in Nigerian Cities\u003c/strong\u003e\u003c/p\u003e","fulltext":[{"header":"1. Introduction","content":"\u003cp\u003eThe rapid urbanization of Nigeria's main cities, including Lagos, Abuja, and Port Harcourt, has created unprecedented issues in urban housing, land use, infrastructure development, and environmental sustainability. With urban populations expected to continue growing rapidly due to rural-urban migration, high birth rates, and economic centralization, urban planners and policymakers face a critical challenge: how to accommodate this increase in a sustainable manner. Traditional horizontal urban expansion is no longer feasible due to land scarcity, rising infrastructural costs, and environmental degradation. As a result, vertical urbanism, particularly high-rise development, has emerged as a potential solution to these expanding urban stresses.\u003c/p\u003e\u003cp\u003eHigh-rise buildings provide a strategic architectural and planning solution by increasing land use efficiency, minimizing urban sprawl, and potentially integrating sustainable technologies. However, their significance in promoting sustainable urban development in Nigeria is underexplored and underutilized. The United Nations Sustainable Development Goals (SDGs), particularly SDG 11 (Sustainable Cities and Communities), emphasize the importance of inclusive, safe, resilient, and sustainable urban spaces. However, translating these global goals into practical architectural and urban planning practices, particularly in the vertical domain, poses both an opportunity and a challenge.\u003c/p\u003e\u003cp\u003eThis study examines the potentials, constraints, and contextual strategies for aligning high-rise developments into Nigeria's broader framework of sustainable urban goals. The research aims to investigate how vertical architecture might be integrated into sustainable urban frameworks, with a focus on Lagos, Abuja, and Port Harcourt, which represent Nigeria's demographic, economic, and infrastructural dynamics. In doing so, it addresses critical challenges such as environmental performance, land use optimization, socioeconomic equity, and architectural innovation.\u003c/p\u003e\u003cp\u003eThe originality of this research stems from its endeavor to bridge the gap between architectural verticality and sustainable urbanization in Nigeria. It proposes a context-specific framework for high-rise development, drawing on multidisciplinary concepts from urban planning, environmental design, architectural theory, and sustainable development. Finally, this paper aims to provide realistic policy suggestions, design strategies, and implementation frameworks to guide future vertical urban efforts in Nigerian cities.\u003c/p\u003e"},{"header":"2. Literature Review","content":"\u003cdiv id=\"Sec3\" class=\"Section2\"\u003e\u003ch2\u003e2.1 Urbanization and the Nigerian Context\u003c/h2\u003e\u003cp\u003eNigeria is currently experiencing one of the most rapid urban transformations in Sub-Saharan Africa. According to UN-Habitat (\u003cspan citationid=\"CR18\" class=\"CitationRef\"\u003e2023\u003c/span\u003e), over 52% of Nigerians presently live in cities, with the percentage expected to climb to more than 70% by 2050. This rise is most obvious in Lagos, which has an estimated population of more than 20\u0026nbsp;million people, followed by Abuja and Port Harcourt, both of which are experiencing tremendous infrastructure and demographic changes. This tendency has resulted in increased demand for land, services, and housing, which frequently leads to slum proliferation, traffic congestion, environmental degradation, and socioeconomic inequalities (Akinmoladun \u0026amp; Oluwoye, \u003cspan citationid=\"CR5\" class=\"CitationRef\"\u003e2021\u003c/span\u003e; Oduwaye, \u003cspan citationid=\"CR12\" class=\"CitationRef\"\u003e2020\u003c/span\u003e).\u003c/p\u003e\u003cp\u003eConventional low-rise and horizontal developments have proven insufficient in meeting demand, owing to their extensive land requirements and inefficient service delivery. This has motivated academics and urban theorists to promote compact city models and vertical growth paradigms (UN-Habitat, \u003cspan citationid=\"CR16\" class=\"CitationRef\"\u003e2020\u003c/span\u003e; Jenks \u0026amp; Burgess, \u003cspan citationid=\"CR9\" class=\"CitationRef\"\u003e2000\u003c/span\u003e).\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec4\" class=\"Section2\"\u003e\u003ch2\u003e2.2 High-Rise Development: Global Trends and Local Realities\u003c/h2\u003e\u003cp\u003eGlobally, high-rise buildings are widely recognized as tools for urban densification and sustainability, notably in cities like Singapore, Tokyo, New York, and Dubai. These cities have effectively implemented vertical strategies to integrate residential, commercial, and recreational purposes while improving environmental performance with energy-efficient technology, green facades, and smart building systems (Yeang, \u003cspan citationid=\"CR23\" class=\"CitationRef\"\u003e2006\u003c/span\u003e; Wood, \u003cspan citationid=\"CR20\" class=\"CitationRef\"\u003e2014\u003c/span\u003e).\u003c/p\u003e\u003cp\u003eHowever, high-rise development in Nigeria is still evolving, with Lagos leading the way with commercial and mixed-use buildings like Eko Atlantic City and the Nigerian External Communications Complex. Abuja and Port Harcourt have also seen an increase in high-rise government and corporate buildings. However, planning, regulation, and sustainability integration for these structures are frequently inconsistent or absent (Adedeji \u0026amp; Ayoola, \u003cspan citationid=\"CR1\" class=\"CitationRef\"\u003e2022\u003c/span\u003e).\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec5\" class=\"Section2\"\u003e\u003ch2\u003e2.3 High-Rise Architecture and Sustainability\u003c/h2\u003e\u003cp\u003eThe relationship between high-rise buildings and sustainability is multidimensional. On the one hand, vertical buildings can reduce land consumption, increase walkability, and efficiently concentrate infrastructure (Lehmann, \u003cspan citationid=\"CR10\" class=\"CitationRef\"\u003e2015\u003c/span\u003e). However, if not carefully planned, they can contribute to urban heat islands, wind tunnel effects, and social isolation (Ng, \u003cspan citationid=\"CR11\" class=\"CitationRef\"\u003e2009\u003c/span\u003e). As a result, sustainable high-rise design necessitates a careful balance of energy efficiency, social integration, environmental responsiveness, and economic viability.\u003c/p\u003e\u003cp\u003eIn the Nigerian context, sustainable high-rise design is hampered by unpredictable power supply, a scarcity of sustainable construction materials, and poor urban governance. Nonetheless, recent innovations such as the Alaro City project and the Eco Atlantic initiative are seeking to integrate renewable energy, rainwater collection, and smart technologies, indicating a potential paradigm shift (Ameh \u0026amp; Owoicho, \u003cspan citationid=\"CR6\" class=\"CitationRef\"\u003e2023\u003c/span\u003e).\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec6\" class=\"Section2\"\u003e\u003ch2\u003e2.4 United Nations Sustainable Development Goals (UN-SDGs) and the Built Environment\u003c/h2\u003e\u003cp\u003eThe UN-SDGs, particularly SDG 11, demand for cities that are inclusive, safe, resilient, and sustainable. This goal necessitates rethinking urban form, governance, and architecture. High-rise buildings, when integrated with green infrastructure, inclusive housing policies, and mixed-use functions, can greatly contribute to this objective (UNDP, \u003cspan citationid=\"CR15\" class=\"CitationRef\"\u003e2023\u003c/span\u003e). Studies have shown that Vertical developments can support several SDGs, such as SDG 7 (Affordable and Clean Energy), by integrating solar PV systems. SDG 13 (Climate Action) by reducing the carbon footprint through vertical density and SDG 9 (Industry, Innovation, and Infrastructure) by promoting modern construction technologies.\u003c/p\u003e\u003cp\u003eHowever, there is frequently a gap between high-rise development in Nigeria and these sustainable development goals due to a lack of policy coherence, inadequate stakeholder participation, and insufficient data-driven planning (Onatu, \u003cspan citationid=\"CR14\" class=\"CitationRef\"\u003e2021\u003c/span\u003e).\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec7\" class=\"Section2\"\u003e\u003ch2\u003e2.5 Challenges and Gaps in Nigerian Vertical Urbanism\u003c/h2\u003e\u003cp\u003eWhile high-rise buildings have proliferated in the selected cities in Nigeria, their expansion has not always been consistent with sustainable principles. Challenges include such as ineffective urban planning and enforcement, lack of integration of passive design strategies and renewable energy systems, inadequate consideration of socio-cultural and climatic contexts and absence of participatory urban design involving local communities.\u003c/p\u003e\u003cp\u003eFurthermore, empirical research linking vertical architecture to sustainability results in Nigeria reveal a significant knowledge gap. Most existing research focuses on technical or economic factors without sufficiently exploring social, environmental, or policy implications (Adefolami \u0026amp; Afolabi, \u003cspan citationid=\"CR2\" class=\"CitationRef\"\u003e2020\u003c/span\u003e).\u003c/p\u003e\u003cp\u003eThe literature emphasizes the urgent necessity for a localized vertical development paradigm that aligns architectural innovation with Nigeria's urban sustainability needs. While global models offer useful insights, Nigerian cities require context-specific strategies that take into account climatic responsiveness, cultural relevance, economic realities, and strong policy frameworks. This study aims to bridge that gap by proposing a strategic alignment between high-rise development and sustainable urban goals adapted to Nigeria's distinct urban context.\u003c/p\u003e\u003c/div\u003e"},{"header":"3. Methodology","content":"\u003cdiv id=\"Sec9\" class=\"Section2\"\u003e\u003ch2\u003e3.1 Research Design\u003c/h2\u003e\u003cp\u003eThis study uses a mixed-methods research strategy that combines qualitative and quantitative approaches. The rationale behind this is to capture the multifaceted dimensions of high-rise development, which include architectural, environmental, and social performance, as well as regulatory and planning implications. The study employed case study analysis, structured field surveys, building performance simulations, and key informant interviews in three major Nigerian cities: Lagos, Abuja, and Port Harcourt.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec10\" class=\"Section2\"\u003e\u003ch2\u003e3.2 Case Study Selection Criteria\u003c/h2\u003e\u003cp\u003eThe following criteria were used in selecting case study buildings:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eMinimum of 10 storeys (classified as high-rise by the Nigerian Urban and Regional Planning Law)\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eLocated in high-density urban cores\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eFunctional use as residential, commercial, or mixed-use buildings\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eAccessibility for data collection and modeling\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eConstruction completed between 2010 and 2024\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eSelected case studies include:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eLagos: Eko Pearl Tower, Civic Tower, and Nestoil Tower\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eAbuja: Ministry of Transportation Headquarters, World Trade Center Tower, and NNPC Towers\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003ePort Harcourt: Hotel Presidential Tower, GRA High-Rise Apartments\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec11\" class=\"Section2\"\u003e\u003ch2\u003e3.3 Data Collection Methods\u003c/h2\u003e\u003cdiv id=\"Sec12\" class=\"Section3\"\u003e\u003ch2\u003e3.3.1 Field Observation and Architectural Documentation\u003c/h2\u003e\u003cp\u003eArchitectural documentation consisted of on-site observations, photographic surveys, and schematic layout analysis of each high-rise building to evaluate spatial configuration, fa\u0026ccedil;ade orientation, ventilation systems, and passive design integration.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec13\" class=\"Section3\"\u003e\u003ch2\u003e3.3.2 Key Informant Interviews\u003c/h2\u003e\u003cp\u003eIn-depth interviews were conducted with:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eUrban planners (6)\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eArchitects and structural engineers (5)\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eMunicipal officials and building regulators (4)\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eResidents and facility managers (9)\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eSemi-structured interviews focused on sustainability awareness, policy barriers, implementation experiences, and user satisfaction.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec14\" class=\"Section3\"\u003e\u003ch2\u003e3.3.3 Questionnaire Surveys\u003c/h2\u003e\u003cp\u003eA total of 180 questionnaires were distributed across the three cities (60 per city), targeting occupants of high-rise buildings. The survey assessed:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eEnergy consumption behavior\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003ePerception of indoor comfort\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eWater and waste management practices\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eAccessibility and safety concerns\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eCommunity integration\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eResponse rate: 88%, with 158 valid responses.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec15\" class=\"Section3\"\u003e\u003ch2\u003e3.3.4 Building Energy Performance Simulation\u003c/h2\u003e\u003cp\u003eEnergy simulations were conducted using TAS (Thermal Analysis Software) for three selected case study buildings (one per city). Input parameters included:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eClimatic data from NiMet (Nigerian Meteorological Agency)\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eBuilding envelope materials and U-values\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eOccupancy patterns\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eNatural and mechanical ventilation profiles\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eInternal heat gains\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eOutputs analyzed included cooling loads, annual energy consumption, thermal comfort levels (PMV index), and potential solar energy yield.\u003c/p\u003e\u003cp\u003e\u003cb\u003e3.4 Data Analysis Techniques\u003c/b\u003e\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eQualitative data (interviews) were transcribed and thematically analyzed using NVivo 14 software.\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eQuantitative survey data were analyzed using SPSS 27. Descriptive statistics (mean, frequency, standard deviation) and inferential statistics (ANOVA, Pearson\u0026rsquo;s correlation) were applied.\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eSimulation results were benchmarked against Nigerian Building Energy Efficiency Code (BEEC) standards and LEED rating benchmarks.\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e"},{"header":"4. Results and Discussion","content":"\u003cdiv id=\"Sec17\" class=\"Section2\"\u003e\u003ch2\u003e4.1 Architectural and Environmental Performance\u003c/h2\u003e\u003cdiv id=\"Sec18\" class=\"Section3\"\u003e\u003ch2\u003e4.1.1 Spatial and Design Features\u003c/h2\u003e\u003cp\u003eThe majority of the high-rise buildings studied lacked passive design elements including cross-ventilation corridors, shading devices, and green fa\u0026ccedil;ade. Only 30% incorporated double-glazed windows or solar control films, and less than 10% installed rooftop gardens or rainwater collecting systems.\u003c/p\u003e\u003cp\u003eBuildings in Abuja, as seen in Fig.\u0026nbsp;\u003cspan refid=\"Fig2\" class=\"InternalRef\"\u003e2\u003c/span\u003e, often featured more modern planning with a greater attention on green technologies due to increased regulatory enforcement compared to Lagos and Port Harcourt.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec19\" class=\"Section3\"\u003e\u003ch2\u003e4.1.2 Energy Performance Simulation\u003c/h2\u003e\u003cp\u003eSimulation results revealed that buildings in Lagos consumed 38% more energy annually for cooling compared to their counterparts in Abuja and Port Harcourt due to poor envelope insulation and excessive glazing facing direct sunlight. Figure\u0026nbsp;\u003cspan refid=\"Fig4\" class=\"InternalRef\"\u003e3\u003c/span\u003e summarizes simulation results:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e(Source: Author, 2025)\u003c/p\u003e\u003cp\u003eKey Insight: Only 2 out of 9 buildings met the BEEC baseline energy efficiency standards. Solar PV potential was high across all rooftops but remained unutilized.\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv id=\"Sec20\" class=\"Section2\"\u003e\u003ch2\u003e4.2 Socio-Economic and User Experience\u003c/h2\u003e\u003cdiv id=\"Sec21\" class=\"Section3\"\u003e\u003ch2\u003e4.2.1 Affordability and Access\u003c/h2\u003e\u003cp\u003eSurvey results revealed that 67% of occupants in Abuja and Lagos indicated that rent in high-rise buildings was \"highly unaffordable.\" Over 80% of respondents emphasized that high-rise living was accessible mainly to elites or expatriates, contradicting the inclusive aims of SDG 11.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec22\" class=\"Section3\"\u003e\u003ch2\u003e4.2.2 Social Equity and User Experience\u003c/h2\u003e\u003cp\u003eSurveys showed affordability remains a major barrier\u0026mdash;67% of respondents said rents were unaffordable. Security scored highest in user satisfaction (4.2/5), while thermal comfort and community integration scored poorly (2.8 and 2.4 respectively).\u003c/p\u003e\u003cp\u003e\u003cdiv class=\"gridtable\"\u003e\u003ctable float=\"Yes\" id=\"Tab1\" border=\"1\"\u003e\u003ccaption language=\"En\"\u003e\u003cdiv class=\"CaptionNumber\"\u003eTable 1\u003c/div\u003e\u003cdiv class=\"CaptionContent\"\u003e\u003cp\u003eSatisfaction and Livability Scores (1\u0026ndash;5 Scale)\u003c/p\u003e\u003c/div\u003e\u003c/caption\u003e\u003ccolgroup cols=\"2\"\u003e\u003cdiv align=\"left\" class=\"colspec\" colname=\"c1\" colnum=\"1\"\u003e\u003c/div\u003e\u003cdiv align=\"char\" char=\".\" class=\"colspec\" colname=\"c2\" colnum=\"2\"\u003e\u003c/div\u003e\u003cthead\u003e\u003ctr\u003e\u003cth align=\"left\" colname=\"c1\"\u003e\u003cp\u003eCategory\u003c/p\u003e\u003c/th\u003e\u003cth align=\"left\" colname=\"c2\"\u003e\u003cp\u003eAvg. Score (1\u0026ndash;5)\u003c/p\u003e\u003c/th\u003e\u003c/tr\u003e\u003c/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd align=\"left\" colname=\"c1\"\u003e\u003cp\u003eThermal Comfort\u003c/p\u003e\u003c/td\u003e\u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e\u003cp\u003e2.8\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd align=\"left\" colname=\"c1\"\u003e\u003cp\u003eIndoor Air Quality\u003c/p\u003e\u003c/td\u003e\u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e\u003cp\u003e3.1\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd align=\"left\" colname=\"c1\"\u003e\u003cp\u003eAccessibility\u003c/p\u003e\u003c/td\u003e\u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e\u003cp\u003e3.5\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd align=\"left\" colname=\"c1\"\u003e\u003cp\u003eSecurity\u003c/p\u003e\u003c/td\u003e\u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e\u003cp\u003e4.2\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd align=\"left\" colname=\"c1\"\u003e\u003cp\u003eSense of Community\u003c/p\u003e\u003c/td\u003e\u003ctd align=\"char\" char=\".\" colname=\"c2\"\u003e\u003cp\u003e2.4\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/colgroup\u003e\u003c/table\u003e\u003c/div\u003e\u003c/p\u003e\u003cp\u003eThese results indicate that while high-rises offer safety and prestige, they lack in community integration and user comfort.\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv id=\"Sec23\" class=\"Section2\"\u003e\u003ch2\u003e4.3 Planning, Policy, and Regulatory Gaps\u003c/h2\u003e\u003cp\u003eInterviews with urban planners revealed:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eAbsence of a national high-rise development code\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eInconsistent implementation of the Nigerian Building Code\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eNo mandatory green building certification or climate-responsive design enforcement\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eUrban growth patterns remain speculative and uncoordinated, leading to fragmented vertical development, often without accompanying infrastructure.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec24\" class=\"Section2\"\u003e\u003ch2\u003e4.4 Sustainability Assessment\u003c/h2\u003e\u003cp\u003eThe sustainability dimension of vertical development in Nigerian cities remains inconsistent, especially when measured against SDG 11 targets such as environmental responsibility, inclusiveness, and resilience. Field observations and secondary data revealed that, while vertical buildings conserve land, they frequently fall short of energy efficiency and accessibility.\u003c/p\u003e\u003cp\u003eIn Lagos, premium high-rises like the Nestoil Tower (Fig.\u0026nbsp;\u003cspan refid=\"Fig3\" class=\"InternalRef\"\u003e4\u003c/span\u003e) and Eko Atlantic incorporate sustainability features such as rooftop solar power, energy-efficient double-glazed windows, and waste management systems. However, these features are most commonly found in high-end business or residential buildings designed for elite users. In mid-tier or speculative developments, cost-saving frequently outweighs sustainability, resulting in poor ventilation, a lack of green spaces, and a high reliance on diesel generators.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eSimilarly, in Abuja, developments such as the World Trade Center show efficient land use and adherence to building codes, but there is little incorporation of renewable energy or green building certification. Sustainability is more spatial than systemic, generally focusing on aesthetics rather than performance. Despite being a landmark, Port Harcourt's Hotel Presidential Tower has no documented sustainability credentials other than its centaralized location and connectivity to the city's commercial zones.\u003c/p\u003e\u003cp\u003eA rapid sustainability audit using adapted UN-Habitat indicators revealed that most vertical developments have high land use efficiency but low to moderate affordability, inclusiveness, and resilience. Water conservation technologies, energy monitoring systems, and passive cooling strategies were notably absent in both residential and commercial towers.\u003c/p\u003e\u003cp\u003eOverall, the sustainability of Nigeria's vertical growth appears to be aspirational but fragmented. Vertical development may continue to perpetuate unsustainable urban patterns at greater heights unless building codes are strictly enforced, incentives for green certification are provided, and locally appropriate climate design is integrated.\u003c/p\u003e\u003cp\u003eDespite the challenges, opportunities abound:\u003c/p\u003e\u003cp\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eSolar integration can cut energy expenses by up to 35%.\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eMixed-use high-rises with ground-floor retail and community services can enhance social sustainability.\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003eSmart technology, such energy monitoring and greywater recycling, can improve environmental performance.\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/p\u003e\u003cp\u003eTo integrate high-rise building with sustainability measures, a strategic framework should prioritize policy reforms to mandate green design, public-private partnerships for inclusive vertical housing, and climate-sensitive design adapted to Nigerian zones.\u003c/p\u003e\u003c/div\u003e\u003cdiv id=\"Sec25\" class=\"Section2\"\u003e\u003ch2\u003e4.5 Comparative Insights\u003c/h2\u003e\u003cp\u003eWhen comparing Lagos, Abuja, and Port Harcourt, there are significant differences in the scale, motivation, and regulatory framework of vertical development.\u003c/p\u003e\u003cp\u003eLagos represents the future of vertical development led by the private sector. Due to land constraints and population pressures, the city's high-rise growth is primarily market-driven, particularly in Victoria Island, Lekki, and Ikoyi. Projects like Eko Atlantic demonstrate ambitious smart-city goals, but they are frequently criticized for social exclusion and environmental vulnerability, particularly in the context of coastal flooding and sea-level rise.\u003c/p\u003e\u003cp\u003eIn contrast, Abuja takes a more formalized and policy-driven approach. The capital's master-planned form provides regulatory clarity, particularly in regions such as the Central Business District, but vertical expansion is often restrained. State-led projects dominate, with a focus on building regulations but little creativity in green design or social housing integration.\u003c/p\u003e\u003cp\u003ePort Harcourt, an oil-rich city with growing commercial prominence, offers a unique hybrid. Developments like the Hotel Presidential Tower, depicted in Fig.\u0026nbsp;\u003cspan refid=\"Fig4\" class=\"InternalRef\"\u003e3\u003c/span\u003e, occur in response to both economic ambition and urban modernization pressures. However, regulatory enforcement is weaker, and infrastructure support, particularly water and energy systems, lags behind vertical growth.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eThese comparative insights suggest that Nigeria's vertical prospects are diverse and influenced by city-specific dynamics. Lagos leads in innovation but struggles with inclusivity; Abuja succeeds in formal regulation but lacks green ambition; and Port Harcourt has the potential for regional verticalization but faces uncoordinated expansion. Policy responses must be regionally diverse, locally anchored, and strategically aligned with the sustainability imperatives.\u003c/p\u003e\u003c/div\u003e"},{"header":"5. Conclusion","content":"\u003cp\u003eThis study critically examined the relationship between high-rise design and sustainable urban development in three of Nigeria's fastest-growing cities: Lagos, Abuja, and Port Harcourt. Through comprehensive case studies, field surveys, energy simulations, and stakeholder interviews, The study illuminated both the potential and the challenges associated with vertical urbanism in achieving the Sustainable Development Goals (SDGs), particularly SDG 11 (Sustainable Cities and Communities).\u003c/p\u003e\u003cp\u003eFindings revealed that while high-rise developments have evident advantages in terms of land use efficiency, space optimization, and urban density management, they frequently fall short in environmental sustainability, energy performance, affordability, and social inclusion. For example, the majority of the buildings assessed consumed more energy than the baseline standards established by Nigeria's Building Energy Efficiency Code (BEEC), and the majority lacked integrated renewable energy systems or passive design strategies. Furthermore, livability indices such as thermal comfort, indoor air quality, and sense of community performed below expectations, notably in Lagos and Port Harcourt.\u003c/p\u003e\u003cp\u003eOne of the most significant gaps observed is the mismatch between policy intentions and practical implementation. Urban planning in Nigeria continues to encourage speculative, top-down, and often elitist development approaches that exclude larger segments of the population. Furthermore, efforts to assure long-term high-rise growth are undermined by a lack of comprehensive regulatory frameworks, ineffective enforcement mechanisms, and limited professional capacity.\u003c/p\u003e\u003cp\u003eNonetheless, the study identified pathways to positive transformation. Buildings that adopted mild passive strategies and incorporated shading, efficient glazing, or compact spatial planning had superior environmental performance. Abuja, for example, benefits from increased regulatory control and has shown more promising outcomes in both design and performance parameters.\u003c/p\u003e\u003cp\u003eIn conclusion, while vertical urbanism holds significant promise for addressing the space and sustainability challenges of Nigerian cities, attaining its full potential necessitates careful, context-specific planning, institutional reforms, and stakeholder participation. Sustainable high-rise development must be more than just an architectural trend, but a strategic tool for inclusive, resilient, and environmentally responsible urban development.\u003c/p\u003e"},{"header":"6. Recommendations","content":"\u003cp\u003eBased on the research findings, the following recommendations are proposed to guide the alignment of high-rise development with Nigeria's sustainable urban goals:\u003c/p\u003e\u003cp\u003e\u003cstrong\u003ePolicy Development\u003c/strong\u003e\u003cp\u003eCreate a national high-rise code specific to Nigeria's climate.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eGreen Certification\u003c/strong\u003e\u003cp\u003eMake energy efficiency certification mandatory.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003ePassive design\u003c/strong\u003e\u003cp\u003eprioritizes shading, cross-ventilation, and insulation.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eTechnological integration\u003c/strong\u003e\u003cp\u003eencourage solar panels, smart meters, and greywater systems. Furthermore, invest in digital urban tools (such as BIM and GIS) for planning, monitoring, and transparency.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eEquity Measures\u003c/strong\u003e\u003cp\u003eRequire inexpensive housing and accessible design. Furthermore, provide incentives for developers to incorporate low- and middle-income housing into high-rise proposals.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eCapacity Building\u003c/strong\u003e\u003cp\u003eTrain professionals about sustainable practices.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003ePublic engagement\u003c/strong\u003e\u003cp\u003eInvolve communities in planning decisions.\u003c/p\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFuture Research\u003c/strong\u003e\u003cp\u003estudy long-term livability, lifecycle implications, and urban climate effects.\u003c/p\u003e\u003c/p\u003e"},{"header":"7. Cross-Cutting Barriers to Sustainable Vertical Development","content":"\u003cp\u003eDespite the promise of vertical urbanism in addressing Nigeria\u0026apos;s spatial and sustainability issues, several systemic barriers remain across institutional, technical, and socioeconomic dimensions. These barriers are not unique to one phase of urban development but cut across policy formation, planning, construction, maintenance, and governance.\u003c/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c/span\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003e7.1 Institutional Fragmentation\u003c/strong\u003e: A key impediment is the fragmentation between federal, state, and local urban authorities. Planning documents often conflict, responsibilities overlap, and enforcement is ineffective. For example, Lagos and Abuja operate under different planning statutes, with minimal coordination at the national level. This complicates efforts to set sustainability benchmarks or implement a national high-rise framework.\u003c/p\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e7.2 Corruption and Regulatory Capture\u003c/strong\u003e: Corruption in the building approval and land-allocation processes remains a pervasive problem. Developers often use bribery to avoid environmental assessments or obtain permits for unauthorized high-rise developments. This undermines trust in institutions and skews vertical expansion toward elite interests.\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e7.3 Data Deficiency\u003c/strong\u003e: The lack of reliable and real-time urban data is a significant constraint. Most cities lack comprehensive geospatial databases on building heights, energy consumption, and land use zoning. This inhibits planners\u0026apos; capacity to simulate vertical growth scenarios and adequately monitor sustainability implications.\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e7.4 Capacity Gaps\u003c/strong\u003e: There is a critical shortage of local expertise in green high-rise design, structural engineering, and digital modelling. Nigeria\u0026apos;s universities and training institutes have not fully integrated sustainable architecture or smart city technology into their courses, resulting in an overreliance on foreign consultants.\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e7.5 Socio-Spatial Inequality\u003c/strong\u003e: Middle and lower-income individuals sometimes lack access to vertical developments, especially in Lagos and Abuja. The absence of inclusive finance approaches and affordable vertical housing contributes to urban exclusion, while informal settlements grow horizontally.\u003c/p\u003e\n\u003c/span\u003e\n\u003cp\u003e\u003c/p\u003e\n\u003cp\u003eThese cross-cutting challenges highlight the need for integrated governance, transparency in urban processes, and stronger accountability mechanisms in aligning vertical urbanism with national and global sustainability goals.\u003c/p\u003e"},{"header":"8. Future Research Directions","content":"\u003cp\u003eWhile this study provides a thorough examination of vertical urbanism and its alignment with the SDGs in Nigerian cities, significant research gaps exist for future inquiry.\u003c/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c/span\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003e8.1 Affordable Vertical Housing Models\u003c/strong\u003e: Future research should explores how to design and fund high-rise buildings for low- and middle-income population. This includes analyzing cooperative housing schemes, public housing retrofits, and microfinance mechanisms appropriate for vertical situations.\u003c/p\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e8.2 Vertical Urbanism in Secondary Cities\u003c/strong\u003e: The majority of current research and investment is focused on major cities such as Lagos and Abuja. However, secondary cities including Ibadan, Kano, Uyo, and Kaduna are also experiencing vertical transitions. Comparative studies are required to examine how various governance structures and growth pressures shape their high-rise trajectories.\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e8.3 Climate-Responsive High-Rise Design\u003c/strong\u003e: Further empirical research is needed on climate-adaptive architecture in tropical African contexts. These should examine the performance of passive cooling systems, renewable energy integration, and vertical green spaces in reducing heat loads and emissions\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e8.4 Circular Construction and Material Innovation\u003c/strong\u003e: There is an increasing need to study how circular economy principles might be included into high-rise development in Nigeria. This involves lifecycle assessments, reuse of demolition materials, and developing low-carbon alternatives to concrete and steel.\u003c/p\u003e\n\u003c/span\u003e\u003cspan\u003e\n \u003cp\u003e\u003cstrong\u003e8.5 Social Impacts and Mental Health\u003c/strong\u003e: Few studies have examine the social dimensions of vertical living in African settings. Future studies should explore resident satisfaction, neighborhood cohesion, mental health outcomes, and the effect of isolation or overcrowding in high-rises.\u003c/p\u003e\n\u003c/span\u003e\n\u003cp\u003e\u003c/p\u003e\n\u003cp\u003eBy addressing these research areas, academicians, policymakers, and practitioners can create more inclusive, resilient, and context-specific models for sustainable vertical development in Nigeria and beyond.\u003c/p\u003e"},{"header":"Declarations","content":"\u003cp\u003e\u003cstrong\u003eEthical Considerations\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eEthical approval was obtained from Federal University Birnin Kebbi Research Ethics Committee. All participants provided informed consent, and data were anonymized to protect identities.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConflicts of Interest\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe authors declare no conflict of interest.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eData Availability Statement\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe data presented in this study are available on request from the corresponding author.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eInformed Consent Statement\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eInformed consent was obtained from all subjects involved in the study.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunding\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis research received no external funding.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAuthor Contributions\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eConceptualization, H.A.A.; methodology, H.A.A.; formal analysis, H.A.A.; writing\u0026mdash;original draft preparation, H.A.A.; writing\u0026mdash;review and editing, H.M.S.; supervision, H.M.S.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\u003cli\u003e\u003cspan\u003eAdedeji YMD, Ayoola WA (2022) High-rise buildings in Nigeria: An assessment of regulatory compliance and construction challenges. 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Wiley-Academy\u003c/span\u003e\u003c/li\u003e\u003c/ol\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"Federal University Birnin Kebbi","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"High-rise development, Vertical urbanism, Sustainable cities, Nigeria, SDG 11, Energy efficiency, Urban planning, Building performance, Passive design","lastPublishedDoi":"10.21203/rs.3.rs-7185765/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7185765/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eAs Nigeria's urban centres continue to experience significant population growth and spatial expansion, high-rise developments are increasingly being adopted to address land scarcity, housing demand, and infrastructure stress. However, the extent to which these vertical structures align with the United Nations Sustainable Development Goals (UN-SDGs), particularly SDG 11 (Sustainable Cities and Communities), remains underexplored. This study examines the architectural, environmental, and social performance of high-rise buildings in Lagos, Abuja, and Port Harcourt, assessing their contribution to sustainable urban growth. A mixed-methods approach was employed, involving case study analysis, building energy simulations with TAS software, structured surveys of 158 high-rise occupants, and interviews with 24 key stakeholders. The results show that, while high-rise buildings provide spatial efficiency and vertical density, they often fall short in terms of environmental performance, inclusivity, affordability, and renewable energy integration. Energy simulation results indicate that most buildings exceed national baseline cooling load standards, while survey data highlight low user satisfaction in areas such as thermal comfort and sense of community. The study concludes that vertical urbanism in Nigeria require a more deliberate, context-sensitive approach that incorporates passive design principles, smart technologies, green infrastructure, and inclusive planning. Policy recommendations include developing a national high-rise code, mandating green building certification, and fostering public-private partnership for sustainable vertical housing.\u003c/p\u003e","manuscriptTitle":"Vertical Urbanism: Aligning High-Rise Development with Sustainable Urban Goals in Nigerian Cities","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-07-28 08:43:03","doi":"10.21203/rs.3.rs-7185765/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"5b41f153-e2f6-4dfb-ba5a-868337a90827","owner":[],"postedDate":"July 28th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":51923814,"name":"Architecture, Design and Planning"},{"id":51923815,"name":"City Management and Urban Policy"}],"tags":[],"updatedAt":"2025-07-28T08:43:03+00:00","versionOfRecord":[],"versionCreatedAt":"2025-07-28 08:43:03","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7185765","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7185765","identity":"rs-7185765","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}