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Journal: Sustainable Cities and Built Environment (JSCBE)
Author: Adeyemi Adedapo Adewale 1* and Odaudu Ugbede Sunday 2
1 Institute of the Built Environment, School of Postgraduate Studies, Nasarawa State University, Keffi, Nigeria; email: moddap@gmail.com
2 Department of Architecture, Faculty of Environmental Sciences, Dennis Osadebay University, Asaba, Nigeria; email arcodauduugbede@yahoo.com
*Correspondence: email moddap@gmail.com ORCID ID: 0009-0005-8858-4876
This is an open-access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.04.02.02
Long-lasting overruns in costs and timeframes in Nigeria undermine the resilience of infrastructure developments in rural sub-Saharan Africa and it is a threat to the sustainability of built environment assets along the urban-rural range. This paper uses Earned Value Analysis (EVA) to estimate the performance of nine rural development projects in Ebonyi State, Nigeria, quantitatively by determining and ranking governance and management drivers of project success to inform sustainable built environment policy and assist in informing the new discourse on institutional capacity of infrastructure delivery in developing contexts. A sequential explanatory mixed methodology was used. A high level of variation was experienced between road works (mean CPI=0.68) and water schemes (mean CPI=0.78). Infrastructure sustainability in rural Nigeria is pegged on governance and specifically the local authority level. The dysfunctional aspect of the paradoxical negative outcome of monitoring is a sign of systemic malfunction that is bursting of corruption, technical tools deficit and the adoption of ineffective oversight policies. The paper recommended improvement in policy and practice through empowerment of local government in institutions, re-engineering monitoring and evaluation among others
| Field | Value |
|---|---|
| Pages | 32-67 |
| Year | 2026 |
| Issue | 02 |
| Volume | 04 |
Journal: Sustainable Cities and Built Environment (JSCBE)
Author: P. O. Iruobe*1
1 University of Benin, Benin City, Nigeria; email: Patience.iruobe@uniben.edu
*Correspondence: email Patience.iruobe@uniben.edu Tel. 08143885563 ORCID ID: 0000-0003-4524-9849
This is an open-access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.04.02.01
In the built environment, the circular economy has emerged as an alternative paradigm in response to escalating resource depletion, waste generation, and climate change concerns, but its incorporation remains fragmented across real estate and built environment literature. Whereas Europe and Asia demonstrate measurable progress, Africa faces a drawback due to structural and institutional barriers. This review aggregates findings from previous research on the implementation of circular economy in real estate, focusing on three spheres: reuse, recycling, and resource efficiency across property markets. It aims to determine the predominant thematic trends, key drivers, and barriers, assess geographic differences in implementation, and indicate areas of limited knowledge for future research. A systematic literature review was conducted in line with PRISMA 2020 guidelines. Various searches across Web of Science, Scopus, ScienceDirect, SpringerLink, Google Scholar, and Taylor & Francis Online analyzed peer-reviewed journal articles, policy reports, and institutional publications from 2000 to 2024. Initial search records were 1,246, but only 65 studies met the inclusion criteria after screening and full-text assessment. Results from the research disclose strong implementation of the circular economy in Europe and Asia, motivated by policy enforcement, technological advancement, and institutional alliance. In contrast, implementation in Africa remains limited due to factors such as weak governance, inadequate funding, and low prioritization policy. Factors facilitating adoption include material passports, collaborative platforms, and Building Information Modelling (BIM). However, circular economy principles in valuation practices, affordable housing initiatives, equity, and urban land markets remain understudied. There is a potential for circular economy practices in real estate to reduce construction waste, improve resource efficiency, and support sustainable housing. Theoretically, the review contributes by connecting circular economy principles to valuation frameworks; by providing practical insights for practitioners, investors, and policymakers; and by striving to advance circular economy adoption in emerging economies.
| Field | Value |
|---|---|
| Pages | 01-31 |
| Year | 2026 |
| Issue | 02 |
| Volume | 04 |
Journal: Sustainable Cities and Built Environment (JSCBE)
Author: Yakubu Ukwe-nya Sunday*1, Baba Benjamin2, Ekule Andrew. A3
1 Federal University Oye-Ekiti , Nigeria; email sunday.yakubu@fuoye.edu.ng
2 Federal Polytechnic Oko, Nigeria; email benrealisa@gmail.com
3 Kogi State Polytechnic Lokoja, Nigeria; email ekuleadejoh@gmail.com
*Correspondence: email Sunday.yakubu@fuoye.edu.ng; Tel.: +2348034355960 ORCID ID: https://orcid.org/0009-0005-6123-4366
This is an open-access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.04.01.03
Several pieces of literature made an attempt to present the challenges of compliance with standards and regulations in the construction industry in Nigeria. This study identifies and examines the degree of compliance with minimum building setback regulations by the Town & Urban Development Board in Ekiti, focusing on benchmarking standards with the current practices, targeting residential and commercial building development sites. Using a case measurement and inspection approach, a purposive sampling technique was used in the selection of some sites in Ekiti for data collection, in which 150 residential and commercial building development projects were identified and investigated. This consists of 50 project sites in Ado-Ekiti, 30 at Oye-Ekiti, 20 at Ikole-Ekiti, 30 at Omuo, 10 at Ikere, and 10 at Ikare, respectively. The objective criteria for the measurement were the standards requirements for minimum building setbacks from the road by urban development control in Nigeria. Tables, graphs, tabulation, trends, and percentages were used to classify and rate the data on an acceptable threshold. The findings revealed that compliance varies across different locations, with some showing signs of stronger adherence to standards, others exhibiting widespread noncompliance, and, in some cases, the absence of compliance, raising a lot of concern about enforcement and monitoring. Compliance with minimum setback is critical for sustainable urban development in 76 Nigeria. While challenges persist in effective enforcement, public awareness, and policy reforms are needed to improve adherence in residential and commercial buildings in Nigeria
| Field | Value |
|---|---|
| Pages | 75-95 |
| Year | 2026 |
| Issue | 01 |
| Volume | 04 |
Journal: Sustainable Cities and Built Environment (JSCBE)
Author: Hana Karoui
This is an open-access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.04.01.02
The research has investigated the importance of interior design in creating an indoor environment within a nursery and its direct impact on the self-development of toddlers. It emphasizes that the physical setting should actively contribute to fostering independence, confidence, and comfort in early childhood. This study confirms the hypothesis that interior design makes an important contribution to supporting educators in addressing the spatial needs of Montessori environments and highlighting the interrelationship between design principles and educational philosophy. By doing so, it identifies practical guidelines for designers to configure classroom spaces in ways that enhance the learning experience and general well-being of children. This research identifies that most classrooms within nurseries lack an authentic Montessori-friendly environment but instead this approach is employed by using it only in toddler’s activities. To address this emerging issue, the study insists on clear interior design guidelines to be developed for purpose-built nursery facilities that conform to Montessori philosophy. Such guidelines are necessary for all design elements and will address zoning, circulation and movement, lighting, furniture and shelving, flooring, and incorporation of natural elements in ensuring that the physical environment actively promotes Montessori philosophy. A mixed-method approach was adopted, combining qualitative and quantitative techniques. Data was collected through a questionnaire with nursery teachers and mothers of toddlers, added to an observation study, and complemented by a benchmarking analysis of Montessori-inspired nurseries at local, regional, and international levels. Results show that Montessori principles can be successfully interpreted in the form of interior design guidelines, which would enable classrooms to foster independence, responsibility, and self-confidence while ensuring safety and comfort. Recommendations emphasize the importance of cooperation between interior designers and educators in creating an environment that will actively boost Children’s development and make the physical space a partner in the learning process.
| Field | Value |
|---|---|
| Pages | 28-74 |
| Year | 2026 |
| Issue | 01 |
| Volume | 04 |
Journal: Sustainable Cities and Built Environment (JSCBE)
Authors: Yakubu Ukwe-nya Sunday, Hambolu Agnes Taiwo, Egbuta, J. N, Zakka, Solomon. D.
This is an open-access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.04.01.01
The purpose of this paper is to examine the extent of regulatory compliance regarding green zones in urban centers within a postcolonial context in promoting health and well-being in Lokoja metropolis and other developing countries while targeting all stakeholders and users. This study employs proportional random sampling to collect data by administering 140 structured questionnaires, yielding a valid response rate of 120 (72%). Additionally, physical observations of green zone areas were conducted for assessment, along with a review of published literature. SPSS was utilized for the descriptive and inferential analysis of the data, while thematic analysis was used for data collected through physical observations. The findings indicate that the lack of stronger regulatory control in postcolonial urban centers has led to the conversion of green-zone areas for alternative uses. This research was conducted in Lokoja municipality, one of the first administrative seats of the colonial governor-general. But the findings can be applied to similar cities and developing countries with post-colonial compliance regulatory issues. This study suggests that urban development control should establish stronger regulatory frameworks with penalties for non-compliance to preserve the original purpose of green zone areas, established during the colonial period. Moreover, the findings emphasize the necessity for robust legislation for urban control officials, building developers, and those involved in construction and city planning in developing countries, focusing on sustainable stakeholder engagement to ensure adequate compliance with green zone regulations.
| Field | Value |
|---|---|
| Pages | 01-27 |
| Year | 2026 |
| Issue | 01 |
| Volume | 04 |
Journal: Sustainable Cities & Built Environment (JSCBE)
Authors: Terlumun Adagba, Aliyu Abubakar, Abubakar Sabo Baba
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.03.02.01
This study seeks to provide insight into how varying water cement ratios (0.40, 0.45 and 0.50) influence the properties of fresh and hardened concrete made with aggregates prepared using two different preparation methods (manual and mechanical) both experimentally and statistically. Concrete properties evaluated included workability, density, compressive and flexural strengths at 7, 14, 21 and 28 days of curing. Results revealed that varying the water-cement ratio impacted both fresh and hardened concrete properties while concrete having low water cement ratio performed better for both aggregates. Although handcrushed aggregates had slightly higher percentage gains in compressive strength over time, the machine-crushed aggregates started at a much higher strength. The flexural strength increased over time, with machinecrushed aggregates exhibiting a faster rate of gain while early-age differences were minimal, the disparity became more pronounced at 21 and 28 days. For all w/c ratios, machine-crushed aggregates consistently demonstrated lower water absorption compared to those with handcrushed aggregates at later ages. ANOVA and the independent samples t-Tests were employed to statistically verify these effects. A significant impact of water cement ratio and curing age was observed on the compressive strength, flexural strength and density while water absorption was significantly less impacted. The independent samples tTest showed a significant difference between the mean values for compressive strength, flexural strength and density (p < 0.001), with machine-crushed concrete consistently outperforming hand-crushed concrete. Water absorption, however, showed no statistically significant difference (p = 0.689), suggesting that both aggregate types absorb water at comparable rates
| Field | Value |
|---|---|
| Pages | 01-29 |
| Year | 2025 |
| Issue | 02 |
| Volume | 03 |
Journal: Sustainable Cities & Built Environment (JSCBE)
Authors: Md. Eleous1 and Abdullah Al Noman
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.crbcd.01
Dhaka, the capital of Bangladesh, is one of the most densely populated cities in the world, experiencing rapid urbanization and significant population growth. This urban influx has resulted in an overwhelming demand for housing, leading to large-scale construction, which is often marked by widespread violations of development control rules and unplanned building construction practices. Significant problems have resulted from these haphazard constructions, such as dwindling wetlands (12.98 % in 2022), decaying green areas (from 17% in 1989 to 2% in 2020), insufficient road networks (7 %), and decreased open spaces (0.9 %). The city is consequently confronted with issues including waterlogging, traffic jams, and increased susceptibility to natural calamities like earthquakes and fires. Despite regulatory frameworks such as the Detailed Area Plan (DAP) 2022–2035 established by Rajdhani Unnayan Kartripakkha (RAJUK); which is the capital development authority, deviations in building construction are prevalent, with commercial, industrial, and residential buildings encroaching on conservation zones and failing to adhere to zoning and setback provisions. This study aims to explore the underlying causes of construction deviations, assess the current state of such violations through field surveys, and identify potential solutions based on stakeholder perspectives. The findings of this study can guide coordinated efforts among government agencies, non-governmental organizations, civil society, and construction stakeholders to improve compliance with building regulations, promote sustainable urban development, and enhance the quality of life in Dhaka
| Field | Value |
|---|---|
| Pages | 25-48 |
| Year | 2025 |
| Issue | 3 |
| Volume | 01 |
Journal: Sustainable Cities & Built Environment (JSCBE)
Authors: Margaret Nakiwala, Stephen Mukiibi, Amos Chom Haruna, Nathan Kibwam
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.emade.02
Access to mortgage financing is a significant challenge in developing countries, including Uganda, hindering the growth of the housing sector. This study explores the perceptions of bank credit professionals regarding clients’ awareness, attitudes, and challenges related to mortgage eligibility terms in the Greater Kampala Metropolitan Area. Employing a qualitative approach, indepth Key Informant Interviews were conducted with six credit professionals from two major financial institutions. The findings reveal that over 75% of applicants fail to meet the stringent eligibility criteria, with key barriers identified as high interest rates averaging around 21%, substantial down payment requirements of 20% to 30%, and rigid collateral stipulations. Credit professionals suggested strategies to alleviate these challenges, including relaxing eligibility conditions, accepting alternative collateral, and encouraging self-financing through investment returns. The study highlights the urgent need for enhanced stakeholder collaboration to improve mortgage accessibility and affordability. Policy implications include reducing interest rates, revising eligibility criteria, and strict measures against corruption within financial institutions. Implementing these recommendations is vital for making mortgage financing more attainable for housing developers in the GKMA, thereby fostering a more inclusive housing market in Uganda.
| Field | Value |
|---|---|
| Pages | 01-23 |
| Year | 2025 |
| Issue | 3 |
| Volume | 01 |
Journal: Sustainable Cities & Built Environment (JSCBE)
Authors: Mohamed Shihada Da’abis
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: https://doi.org/10.58757/jscbe.gsbeheach.01
Public schools in Bahrain and in the Arabian Gulf Public schools in Bahrain and in the Arabian Gulf Region are facing poor indoor and outdoor environments due to the prevailing problem of harsh hot humid weather most of the year. This leads to high consumption of energy, and other resources due to the nature function of the schools. This necessitates effective actions to fill the gap and address properly the climate issues, consumption of resources, and design challenges. Reviewing related literature indicated a lack of Arab region studies in this field, in contrast to Foreign Studies. This gap includes items such as knowledge, data collection, design flaws, performance, guidelines and others. The objectives of this article are to investigate, and identify factors, green elements and possible solutions contributing to sustaining green public-school buildings and the environment while saving national resources and meeting performance sustainable criteria for school buildings and students. Literature review and qualitative descriptive method are essential investigation methodologies. The goal of qualitative descriptive studies is a comprehensive summarization and categorical. Literature review was the main action in the process to start exploring prior research and published works on green school buildings. Collected data on research materials published by reliable professional institutions and research are reviewed, explored, identified, categorized, and summarized in outputs. These are discussed and analyzed to ensure their positive influence on schools’ buildings and address collective challenges. Findings can be summarized in the following outputs: Characteristics. Advantages. Guidelines and standards. Green Building Council’s influence. Performance and rating tools for schools and students. Statistics. Innovation and Case studies and Lessons learned. The first Bahrain green school case study will contribute to the exchange experience with others concerned. In conclusion, this article recommends greening school buildings and environment design through various sustainable elements that are included in the results to enhance school buildings, the environment and student performance.
| Field | Value |
|---|---|
| Pages | 01-40 |
| Year | 2024 |
| Issue | 2 |
| Volume | 02 |