This study examined the factors influencing construction professionals and contractors’ resistance behaviours towards sustainable construction practices in Nigeria. 56 variables identified from literature were categorised into four main factors. Questionnaire was designed based on the extracted variables and distributed to construction professionals and contractors in South-East Nigeria. The data generated through the questionnaire survey were analysed using Statistical Package for Social Sciences (SPSS) Software. The result revealed that industry, policy, human, and environment factors were significantly influencing professionals and contractors’ resistance behaviours to implementation of sustainable construction practices. However, the Mean Score Index result revealed that policy factors with an average MSI of 4.68 exert the greatest influence on professionals’ and contractors’ resistance behaviours. The overall result showed that all the variables have significant influences on professionals’ and contractors’ resistance behaviours, but five sub-factors (limited knowledge and awareness, additional cost of change, the prevailing economic condition, incompatibility of change process and organisational culture, and laws and regulations) each with an average MSI of 5.00 have the greatest individual influences on construction stakeholders’ resistance behaviours towards sustainable construction practices in Nigeria. The Mann-Whitney U Test result affirmed that there is no significant difference (p>0.05) between the rankings of professionals and contractors on the factors influencing their resistance behaviours. In view of this, the study raised concern about the training routes of the construction practitioners, conventional construction practices and existing policy and legislative frameworks including government commitment towards implementing sustainable construction practices in Nigeria.
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