Source: https://www.census.gov/programs-surveys/ahs/data/2011/ahs-2011-public-use-file-puf/ahs-2011-national-public-use-file-puf.html Further explanation on columns: https://www.census.gov/data-tools/demo/codebook/ahs/ahsdict.html?s_keyword=&s_year=&sortby=

The AHS is sponsored by the Department of Housing and Urban Development (HUD) and conducted by the U.S. Census Bureau. The survey is the most comprehensive national housing survey in the United States.