The U.S. Department of Housing and Urban Development (HUD) FY 2010–2015 Strategic Plan calls for an overall reduction in energy costs through improved design and operation of HUD-supported projects. Energy conservation and green building techniques are becoming mainstream practice for market-rate projects, and many sponsors and owners of HUD-subsidized housing have already started following suit, both in maintaining and upgrading existing units and in constructing new units. To ensure that this momentum continues in its Section 202 and Section 811 portfolio, HUD moved in fiscal year 2010 to require energy efficiency and water conservation measures and to encourage the use of green building design and features in new Section 202 and Section 811 projects. This Enhancing Energy Efficiency and Green Building Design in Section 202 and Section 811 Programs report was developed as the result of an Interagency Agreement between HUD and the U.S. Environmental Protection Agency (EPA), with the help of stakeholders who participated in roundtable discussions with HUD and EPA. It was developed to aid sponsors and owners in working with HUD to advance these goals and, specifically, to assist in responding to the new requirements and incentives.