RAD was created to give public housing authorities (PHAs) a powerful tool to preserve and improve public housing properties and address the huge nationwide backlog of deferred maintenance. RAD also created new preservation opportunities based on long-term assistance contracts that facilitate the financing of improvements, to assist owners of properties participating in seven other HUD programs, three of which are currently active (Section 8 Moderate Rehabilitation, Moderate Rehabilitation Single Room Occupancy, and Section 202 Project Rental Assistance Contracts). Properties assisted through the Section 811 Project Rental Assistance Contracts and Senior Preservation Rental Assistance Contracts will be able to convert through RAD upon publication of implementing guidance. Properties previously assisted through the Rent Supplement and Rental Assistance Payments programs have all converted, so those programs no longer exist.