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About the NHPD

The National Housing Preservation Database (NHPD) is the only de-duplicated source of address-level data for nearly 80,000 federally supported housing properties in the U.S. Founded by the Public and Affordable Housing Research Corporation (PAHRC) and the National Low Income Housing Coalition (NLIHC), the NHPD helps users access vital information to better understand the stock of publicly supported housing in their community, and to preserve affordable housing options for low-income households. The NHPD integrates information from ten separate federal housing programs and other U.S. Department of Housing and Urban Development (HUD) administrative data, and is updated for times per year.

Since its inception in 2012, the NHPD has been featured in over 50 major media and research publications, such as USA Today, NY Times, Bloomberg Business, Harvard University, the Urban Institute, New York University, and the University of California Los Angeles.

Meet Our Team

Contact Us

For press inquires, general questions, and to request access to the database, please fill out the form here.

Research Powered by the NHPD

How Can We Help You:

  • Training: Get trained on how to use the NHPD and interpret estimates to inform your understanding of the affordable housing stock in your area.
  • Enriched data extracts: Learn about the neighborhood and resident characteristics of federally assisted properties when we match data from the NHPD to additional U.S. Census data and other tools.
  • Custom tabulations: Request local data in relation to preservation risks, exposure to natural hazards, and neighborhood opportunity for the federally assisted housing stock.
  • Policy background: Leverage our housing policy knowledge to contextualize the affordable housing stock's preservation risks.


Explore Our Tools

Interactive Mapping Tool

Our interactive maps show you where affordable housing is
located in your community and identify new affordable properties and
those at risk of loss.


State-Level Preservation Profiles

These one-page profiles offer and an overview of each state's affordable
housing inventory, providing key facts about the cost burden, housing
shortage, and the number of units at risk of loss in the next five years.


Affordable Housing Preservation Toolkit

This toolkit, developed in partnership with mySidewalk, delivers
aggregated data and guidance to help you create local housing preservation
plans, drilling down to your neighborhood, city, school, district,
country, and more.



Access the National Housing Preservation Database to customize your
search for affordable housing properties by location, funding stream,
or subsidy end date.


NHPD in the News

View some of the research and news in which the NHPD has been featured.