The Daily Mortgage Advisor

Home values dropped for the sixth straight month in March 2011, according to the Federal Home Finance Agency’s Home Price Index. The Home Price Index is a government-sponsored home value tracker.

The HPI report is the latest in a string of “falling home values” stories — a trend that’s troubling home sellers across Orange County and nationwide.

However, although the Home Price Index says home values are falling, that doesn’t necessarily mean that they are. Like most statistics in the housing sector, the Home Price Index is plagued by poor methodologies and a lack of timeliness.

In short, the Home Price Index is flawed. In three ways.

The first big flaw in the Home Price Index is that it only measures the values of homes with mortgages backed by Fannie Mae or Freddie Mac. Homes financed via FHA, or via other means are specifically excluded from the calculation. For today’s purchase market, that leaves more than 1 in 4 homes “uncounted” — a big percentage of the market.

Second, the Home Price Index determines home values by measuring price change from sale to subsequent sale. This eliminates new homes — a major market segment.

And, lastly, the Home Price Index reports on a 60-day delay; we’re only now seeing data from March. This two-month lag renders the HPI a trailing indicator for the housing market instead of a forward-looking one. If you’re a home buyer looking for market insight, the HPI can’t give it — it’s out-dated and out of season.

Despite its shortcomings, though, we can’t ignore the Home Price Index completely. It’s among the most thorough home valuation models available, and it’s used in public policy discussions. When the HPI says prices are down, Wall Street and Capitol Hill take notice, and that trickles down to everyday life on Main Street.

Since peaking in April 2007, the Home Price Index is off 19.1 percent.

Home values fell again in January, according to the Federal Home Finance Agency’s Home Price Index. Values were reported down 0.6 percent, on average.

We say “on average” because the Home Price Index is a national report. It doesn’t capture the essence of a local market like Mission Viejo , or even a city market like Orange County.

The most granular that the monthly Home Price Index gets is regional and January’s report shows that:

• Values in the Mountain states rose 2.0%
• Values in the Pacific states were flat
• Values in the East North Central states fell 1.8%

It’s hardly helpful for home buyers entering the market, or home sellers trying to properly price a home.  Furthermore, because the Home Price Index reports on a 2-month delay, its data fails to reflect the current market conditions.

Versus January — the period from which HPI data is collected — mortgage rates are lower, buyer activity is up, and the federal home buyer tax credit is closer to expiring.  These each can have an impact on housing.

Ultimately, national real estate data like the Home Price Index is best suited for lenders and policy-makers.  National data helps to identify trends that shape formal policy, but it doesn’t help you, specifically. 

Since peaking in April 2007, the Home Price Index is off 13.2 percent.