Established in 1978, the New York City Department of Housing Preservation and Development (HPD) is the largest municipal housing preservation and development agency in the nation. The agency's mission is to promote the construction and preservation of affordable, high quality housing for low- and moderate-income families in thriving and diverse neighborhoods in every borough by enforcing housing quality standards, financing affordable housing development and preservation, and ensuring sound management of the City's affordable housing stock. HPD is responsible for carrying out Housing New York: A Five-Borough Ten-Year Plan, Mayor Bill de Blasio's initiative to build or preserve 200,000 affordable housing units and to help both tenants and landlords preserve the quality and affordability of their homes. HPD is leading the Mayor's charge, in partnership with over 13 sister agencies, advocates, developers, tenants, community organizations, elected officials, and financial institutions. Follow Us: @NYCHousing