Evaluating key attributes for enhancing contractors’ performance in construction waste management: A Multi-Criteria Decision Analysis using the Best Worst Method

The rapid increase in building construction projects due to urban development has led to a significant global rise in construction waste (CW), adversely affecting environmental, social, and economic aspects. This study aims to assist building contractors in minimising CW by evaluating the importance of 27 key attributes to assess their performance in construction waste management (CWM). Multi Criteria Decision Analysis (MCDA) was employed to determine the weight of these attributes using the Best Worst Method (BWM) based on interviews with 10 experts. The most influential attribute for effective CWM is the ‘Establishment of a strict CWM policy within the company’, followed by the ‘Implementation of separated waste bins according to waste types and on-site sorting’ and ‘Developing a comprehensive waste management plan during the early stages of construction’. This study enables contractors to understand the impact of each attribute on enhancing CWM performance and minimising CW in building construction for sustainable development.