Federal Reserve Bank of New York
Contains research and data for information on regional mortgage activity, foreclosures etc.
Provides access to statistics and studies gathered by market researchers, trade organizations, scientific publications, and government sources on over 600 industries.
NYC.gov Property Assessments - DOF
Public information from the City of New York.
NYCHANIS: New York City Housing and Neighborhood Information System
Statistics are provided by NYCHANIS: New York City Housing and Neighborhood Information System. NYCHANIS is sponsored by Furman Center for Real Estate and Urban Policy, New York University School of Law, Robert F. Wagner Graduate School of Public Service, US Department of Commerce Technology Opportunity Program (TOP), and New York City Department of Housing Preservation and Development.
Population and Housing ACS (NYC Dept of City Planning)
Data from the Census American Community Survey (ACS) for boroughs and 55 PUMAs (a census statistical area that resembles community districts in the city) from 2005 to 2009. Profiles in PDF and Excel format.