Abstract
The development of sustainability assessment indicators has become a hot topic globally, while sustainability practices are uncontrollably growing in the construction industry. However, the construction industry itself has negative impacts on the environment, society, and the economy. Therefore, during the construction phase, the contractors who are responsible for delivering construction projects should have a suitably adaptable sustainability solution. Qualified and experienced contractors are, of course, vital for the success of construction projects, and measuring their performance with respect to sustainability during the construction phase is crucial. However, there is currently very little evidence of a comprehensive and integrated assessment approach. This research aims to properly devise a smoother development process and improve potential deliverables for the construction industry in Jordan. A list of sustainability assessment indicators was developed for use during the construction phase, to assess the performance of the contractors, using a review of the literature, surveys, and by drawing upon expert opinion. As a result, 78 indicators have been formulated, across the five major dimensions of environmental, social, economic, lean manufacturing, and cultural, all of which influence contractor performance regarding sustainability practices.