Home Price Index Shows Values Down 19 Percent From Peak

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 cambrian 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.

Foreclosures And Short Sales Distorting "Home Price Trackers"

In an echo of February's Case-Shiller Index report, the government's own home price-tracker -- the Home Price Index -- showed home values slipping between January and February 2011.

The Federal Home Finance Agency data had home values down 1.6 percent nationwide in February, on average, marking the fourth straight month in which prices fell. 

Furthermore, all 9 regions posted losses from the month prior:

• Mountain Region : -3.7% from January
• East South Central : -0.6% from January
• South Atlantic : -0.9% from January
• New England : -2.0% from January

Before you draw conclusions, however, note that the data at which we're looking has several major flaws to it.

First, it's old. We're now in the first week of May and the FHFA's most recent release only covers through February, a time period ending roughly 60 days ago. That's a long delay and today's purchase market in campbell looks much different from the one of February. 

Just ask a real estate agent and they'll tell you -- purchase activity is rising.

Second, the FHFA Home Price Index reports on home value changes between consecutive Fannie Mae or Freddie Mac-securitized transactions only. This might be creating an overweight of "distressed properties" in the index which, in turn, drags down valuations.

Distressed homes account for 40% of all home resales and typically sell at 20 percent discounts.

And, lastly, although the Home Price Index is a national report, real estate as a market is decidedly not national. To the contrary, it's extremely local. As an individual, you don't buy, sell or own homes in all 50 states. You buy them in a specific state, and a specific neighborhood. 

The national data is useless to you in that respect.

We can't discount the Home Price Index data entirely, but should remember that it paints a clearer picture of where housing has been versus where housing is going. As a home buyer or homeowner, it's the future of home values that matters more.