About This Data
The FHFA monthly index is calculated using purchase prices of single-family houses backing mortgages
that have been sold to or guaranteed by Fannie Mae or Freddie Mac.
The House Price Index is based on transactions involving conforming, conventional mortgages purchased or securitized by Fannie Mae or Freddie Mac. Conventional mortgages are those that are neither insured nor guaranteed by the FHA, VA, or other federal government entities. Mortgages on properties financed by government-insured loans, such as FHA or VA mortgages, are excluded from the HPI, as are properties with mortgages whose principal amount exceeds the conforming loan limit. Mortgage transactions on condominiums, cooperatives, multi-unit properties, and planned unit developments are also excluded.
Only mortgage transactions on single-family properties are included. Conforming refers to a mortgage that both meets the underwriting guidelines of Fannie Mae or Freddie Mac and that does not exceed the conforming loan limit. For loans originated in 2009, the loan limit was set by the American Recovery and Reinvestment Act of 2009. That Act, in conjuction with prior legislation, provided for loan limits up to $729,750 for one-unit properties in certain high-cost areas in the contiguous United States.
The HPI includes house price figures for the nine Census Bureau divisions, for the 50 states and the District of Columbia, and for Metropolitan Statistical Areas (MSAs) and Divisions.
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