National Real Estate Statistics
You can get national real estate statistics from these sources:
Building Permit Activity - Residential building permit activity for all states and MSAs (metropolitan statistical areas) in the U.S. The data is available from 1980 through present. Historical nonresidential building permit data are also available from 1980 through 1995.
Construction Statistics - From US Census Bureau.
Fedstats - Statistics from over 70 U.S. Federal Government agencies.
FFIEC Geocoding System - Find population, housing and income data for an address in the U.S.
FreeDemographics.com - Provides free unlimited access to U.S. Census 1990 data and U.S. Census 2000 Dress Rehearsal Data.
Survey of Real Estate Trends - FDIC quarterly report on commercial and residential real estate market trends in the US.
U.S. Bureau of Transportation Statistics - Statistics on transportation facilities, networks, and services of national significance. Download data sets plus translation software.
U.S. Historical Mortgage Rates - National monthly averages from HSH Associates survey.