The Case for Deep Retrofits

September 2020. This report reviews the business case and financing options for deep retrofits in the multi-unit residential building sector, and makes recommendations for improving business case evaluation and financial supports. Some of the barriers to deep retrofits are caused by gaps in information and capability, and can be addressed through education and awareness efforts. Other barriers are caused by the underlying business case for deep retrofits, and require changes in policies and programs to overcome. This report provides recommendations in both of these areas, with specific recommendations for three key actors: governments and utilities; the green building industry; and property owners and managers.