A policy framework for the implementation of sustainable construction in Nigeria.

Abstract

The practice of sustainable construction improves the quality of life of the citizenry. Based on the need to realise the tripod of economic, environmental and sociological improvements, many countries have realised the need to develop individual policies and plans to attain sustainability especially within the construction industry. While patterns of improvements and adequate policies are noticed in some developed countries, a lot of developing economies still grapple with the policy development stage for improved and sustainable construction patterns. Policies constitute the backbone on which decisions are made, practice is predicated and regulated, and it was thus expedient to demonstrate the effects of policies on sustainable construction practice especially in the context of developing countries. This study developed a policy model for the implementation of sustainable construction practice in Nigeria. The model lays a foundation for policy development and industry transition towards sustainable construction. Based on in-depth literature reviews on sustainable construction practices in both developed and developing economies and policy development and practice in selected model countries, a conceptual model was developed. Eleven semi-structured interviews were conducted in addition to two separate focus group discussions with seasoned construction professionals in the capital cities of Abuja and Lagos in Nigeria to confirm the outcomes from the literature review, gain a deeper understanding in a qualitative nature and refine the draft quantitative study instrument. Data obtained at this stage was analysed using Nvivo 12. The data collection was based on probability sampling where 380 questionnaires were distributed, and 249 complete responses were received. Exploratory factor analysis (EFA) using Statistical Package for the Social Sciences (SPSS) version 27 using Maximum likelihood with promax rotation was used to determine the validity and reliability of the four constructs of the conceptual model. Confirmatory factor analysis (CFA) was conducted using AMOS Version 27 software programme to further test validity and reliability of constructs. The CFA revealed acceptable model fit of the measurement model after re-specification of some of the measurement models. At the end, the second order model was tested to determine the relationship among the constructs. The findings revealed that the data was acceptable, and all the four hypotheses tested were found to be significant. The findings of this research which include identifying the clear roles of the government as both a regulator of the industry and as a client for public infrastructure, relevant stakeholders in the industry and implementation patterns for sustainable construction practice have practical, academic, and methodological contributions to the evolving current body of knowledge in the area of policy development for sustainable construction practice specifically in the context of developing countries.