Database Overview


The National Housing Preservation Database is an address-level inventory of federally assisted rental housing in the United States. The agencies and departments that fund these programs have data on the individual programs that they manage, but there is no central location where all of these data are integrated. This makes it difficult to get a clear picture of the current stock of public and affordable housing in a community. It also means those who wish to preserve public and affordable housing in their community, cannot easily get the information they need about particular properties. By creating the National Housing Preservation Database, the Public and Affordable Housing Research Corporation (PAHRC) and the National Low Income Housing Coalition (NLIHC) hope to address these issues.

The data in the National Housing Preservation Database come from the US Department of Housing and Urban Development (HUD) and the US Department of Agriculture (USDA), and include nine federally subsidized programs; state and local subsidies are not included in this database. If you are interested in adding state and local subsidy information to the National Housing Preservation Database for your community, please contact us.

Information on contract expiration dates, loan maturity dates, recent physical inspection scores, number of units, type of owner, and other property and subsidy characteristics are included to assist users in determining whether or not a property is at risk of leaving the subsidized housing stock. It is possible to download data for a city, county, congressional district, metropolitan area, or for an entire state using the ‘Preservation’ tool. It is also possible to download the entire dataset using the ‘Research’ tool.

The National Housing Preservation Database is updated tri-annually in March, August, and December. The data are cleaned and duplicate information is removed using an automated process in addition to manual checking. Every effort is made to ensure the information presented is as accurate as possible; however, there may be inaccuracies. You may contact us to update the National Housing Preservation Database with the correct information.