To support builders in estimating and managing the construction waste from multi-unit residential projects Light House has developed a construction waste estimator.  This calculator is based on the construction waste information collected from over 100 LEED certified residential projects from across Canada.  Source separation on site is the best way to ensure the highest possible diversion rates, estimating the quantities of material will enable builders to plan for waste management and maximize their recycling rates.  The calculator estimates the waste generated for the construction of new residential buildings and can serve as an important component of the builder’s construction waste management plan.