This project offers a ‘‘toolkit’’ to identify and implement solutions to sustainability challenges including energy, waste and water. University campuses act as living laboratories for implementing measurable, effective, equitable and viable solutions. Using this approach, the project will identify regulations and attitudes regarding the built environment that result in unnecessary waste and offer policy solutions to decision-makers. As its first challenge, the project will pilot removal of unnecessary hot water use in selected buildings on university campuses, assessing pre- and post-pilot attitudes and leading to reductions in carbon emissions and implementation of behavior change methodologies. A broad evaluation scheme will be applied to compare the implemented hot water removal experiments and related outcomes to identify avenues of scaling and transferring successful experimental configurations.