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Abstract Sustainability development was first defined as development which meets the needs of the present without compromising the ability of future generations to meet their own needs [1]. Since then sustainability has become widely applied specially when considering construction projects as a result of the huge leap in the global urbanization rates. Sustainability in construction projects was defined as building a healthy environment without wasting any resources such that all the resources are used efficiently and also not harming the community and the environment surrounding [2]. Researchers are continuously attempting to find accurate and reliable sustainability construction performance measures. However, most of these researches focus on studying sustainability in a single construction project, although it should be worthwhile studying sustainability in multiple construction projects in order to maximize the overall sustainability. In this work, a Simulation Optimization Framework that integrates Simulated Annealing (SA) and System Dynamics (SD) was developed for scheduling the different phases in their right sequence of multi-construction projects while maximizing the overall sustainability. This was done while assessing sustainability development and simulating the effect of external factors such as technological advancement and change in people{u2019}s perception on sustainability measures using Zhang et al{u2019}s [3] prototype System Dynamics (SD) model |