NAR: Housing Affordability is at 4-Year High
To interpret the Housing Affordability Index (HAI), a value of 100 means that a family with the median income has exactly enough income to qualify for a mortgage on a median-priced home. An index above 100 signifies that family earning the median income has more than enough income to qualify for a mortgage loan on a median-priced home, assuming a 20% down payment.
For example, the composite HAI of 119.3 in November 2007 means a family earning the median family income ($59,833) has 119.3% of the income necessary to qualify for a conventional loan covering 80% of a median-priced existing single-family home ($208,700), financed at the effective rate on loans closed on existing homes of 6.41%. The increase in the HAI shown above in the graph means that the typical family is more able to afford the median priced home today than at any time since 2004.
Bottom Line: Falling home prices, increasing income levels, falling mortgage rates, and an increasing housing affordability should help offset some of the troubles in the mortgage and housing markets.