The U.S. Department of Housing and Urban Development Research offers useful real estate trends and statistics including the American Marketing Survey.
NAHB bills itself as “the voice of America’s housing industry,” NAHB provide relevant data on the construction industry, including data on housing starts, permits, and completions, which includes single-family, multifamily, and total. Timely data on sales, prices, building materials prices, and interest rates are available. State and metro area data on housing permits and employment are also provided
The Real Estate Center at Texas A&M University offers 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.
The US Census Bureau tracks the numbers of housing units authorized by permits, started, sold or completed. They measure the dollar value of all construction put in place each month. They track residential construction in 30 metropolitan areas across the country each quarter, and the sales of new one-family houses in those areas each year. The Census Bureau tabulates and publishes the dollar value of residential improvement and repair work each quarter. Their Census of Construction Industries, taken every five years, provides the most comprehensive overview of the construction industry available.
The FFIEC allows you to find population, housing and income data for an address in the U.S based on Census Tract Information
Oil and Gas Investment is the Portal for direct investment in oil and gas
The Mortgage Bankers Association (MBA) is the national association representing the real estate finance industry. MBA's research and economics group provides current and comprehensive data and benchmarking tools that make a difference in short- and long-term strategic planning. cover all real estate business areas - economic forecasting, residential, commercial and multifamily.
The Office of Federal Housing Enterprise Insight has a page that provides links to a wide array of data on housing markets and housing finance at:
http://www.ofheo.gov/Research.aspx?Nav=110
The agency also offers downloadable data on the Housing Price Index (HPI). The HPI is a broad measure of the movement of single-family house prices. The HPI is a weighted, repeat-sales index, meaning that it measures average price changes in repeat sales or refinancings on the same properties. This information is obtained by reviewing repeat mortgage transactions on single-family properties whose mortgages have been purchased or securitized by Fannie Mae or Freddie Mac since January 1975.