Assessment of Waste Minimization Strategies in Urban Residential Building Construction Projects in Ede, Osun State, Nigeria

Olayiwola Mojeed; Steve Jayeoba; Adeleke Ogunkoya; Olanrewaju Samuel Jacob

doi:10.56201/ijemt.vol.12.no9.2026.pg55.64

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Assessment of Waste Minimization Strategies in Urban Residential Building Construction Projects in Ede, Osun State, Nigeria

Olayiwola Mojeed, Steve Jayeoba, Adeleke Ogunkoya, Olanrewaju Samuel Jacob,

Abstract

Construction waste remains a major challenge in urban residential building projects, particularly in developing countries where weak regulatory enforcement, informal site management, and limited site space increase waste generation. This study assessed waste minimisation strategies adopted in residential construction projects in Ede, Osun State, Nigeria, focusing on major waste types and sources, strategies employed at different project stages, their effectiveness, and factors influencing implementation. A qualitative approach was adopted using semi-structured interviews with fifteen stakeholders comprising five architects, three builders, three quantity surveyors, two site engineers, and two site supervisors. Data were analysed thematically. Findings revealed that construction waste in Ede is mainly associated with design modifications, inaccurate material estimation, procurement delays, poor material handling, and unskilled labour. Concrete remnants, timber off-cuts, mortar residues, and damaged blocks were the most frequently generated waste materials. Accurate quantity take-offs, modular design, and material standardisation were identified as effective minimisation strategies during design and procurement. However, implementation during construction was inconsistent due to financial constraints, limited technical expertise, inadequate storage space, and weak regulatory enforcement. The study concludes that effective waste minimisation requires improved project planning, stakeholder coordination, professional involvement in material estimation, worker training, and stronger institutional enforcement. The findings provide context-specific insights for improving sustainable residential construction and waste management practices in Nigeria.

Keywords

Construction wastewaste minimisationresidential buildingssustainable constructionqualitative studyEdeOsun State.

References

Alghamdi, A. (2025). Sustainable practices in construction management and environmental engineering: A review. Sustainability, 17, 10027. https://doi.org/10.3390/su172210027 Ajayi, S. O., & Oyedele, L. O. (2018). Waste-efficient materials procurement for construction projects: A structural equation modelling of critical success factors. Waste Management, 75, 60–69. https://doi.org/10.1016/j.wasman.2018.01.025 Ajayi, S. O., Oyedele, L. O., Akinade, O. O., Bilal, M., Alaka, H. A., Owolabi, H. A., & Kadiri, K. O. (2017). Attributes of design for construction waste minimisation: A case study of waste-to-energy project. Renewable and Sustainable Energy Reviews, 73, 1333–1341. https://doi.org/10.1016/j.rser.2017.01.084 Akinade, O. O., Oyedele, L. O., Ajayi, S. O., Bilal, M., Alaka, H. A., Owolabi, H. A., & Arawomo, O. O. (2018). Designing out construction waste using BIM technology: Stakeholders’ expectations for industry deployment. Journal of Cleaner Production, 180, 375–385. https://doi.org/10.1016/j.jclepro.2018.01.022 Alotaibi, S., Martinez-Vazquez, P., & Baniotopoulos, C. (2024). Waste generation factors and waste minimisation in construction. In V. Ungureanu et al. (Eds.), CESARE 2024 (Lecture Notes in Civil Engineering, Vol. 489, pp. 552–559). Springer. https://doi.org/10.1007/978-3-031-57800-7_51 Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101. https://doi.org/10.1191/1478088706qp063oa Braun, V., & Clarke, V. (2021). Thematic analysis: A practical guide. SAGE Publications. Creswell, J. W., & Poth, C. N. (2018). Qualitative inquiry and research design: Choosing among five approaches (4th ed.). SAGE Publications. Enobie, B. K., Okwandu, A. C., Abdulwaheed, S. A., & Iwuanyanwu, O. (2024). Effective waste management in construction: Techniques and implementation. International Journal of Applied Research in Social Sciences, 6(8), 1642–1652. https://doi.org/10.51594/ijarss.v6i8.1390 Guest, G., Namey, E., & Chen, M. (2020). A simple method to assess and report thematic saturation in qualitative research. PLOS ONE, 15(5), e0232076. https://doi.org/10.1371/journal.pone.0232076 Lin, Y.-H., Yuan, W., & Wang, T. (2026). A review of construction and demolition waste management: Resource coordination and multidimensional interaction. Buildings, 16(7), 1437. https://doi.org/10.3390/buildings16071437 Minunno, R., O’Grady, T., Morrison, G. M., & Gruner, R. L. (2020). Exploring environmental benefits of reuse and recycle practices: A circular economy case study of a modular building. Resources, Conservation and Recycling, 160, 104855. https://doi.org/10.1016/j.resconrec.2020.104855 Osmani, M. (2012). Construction waste minimisation in the UK: Current pressures for change and approaches. Procedia – Social and Behavioral Sciences, 40, 37–40. https://doi.org/10.1016/j.sbspro.2012.03.158 Unegbu, H. C. O., & Yawas, D. S. (2024). Optimizing construction and demolition waste management in Nigeria: Challenges, regulatory frameworks, and policy solutions. Discover Civil Engineering, 1, 141. https://doi.org/10.1007/s44290-024-00142-3 Utsev, J. T., Imoni, S., Onuzulike, C., Akande, E. O., Orseer, A. M., & Tiza, M. T. (2024). Strategies for sustainable construction waste minimization in the modern era. Bincang Sains dan Teknologi , 3(1), 1–10. https://doi.org/10.56741/bst.v3i01.506

Assessment of Waste Minimization Strategies in Urban Residential Building Construction Projects in Ede, Osun State, Nigeria

Abstract

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