Last week, Standard & Poor’s released its Case-Shiller Index for December 2010. The index is a home valuation tracker, meant to meausure the change in home prices from one period to the next.
December’s Case-Shiller Index showed major devaluations nationwide. As compared to December 2009, on a year-over-year basis, home values fell in 18 of the Case Shiller Index’s 20 tracked markets, and the U.S. National Index dropped 4 percent overall.
The retreat puts December’s home values at similar levels as compared to early-2003.
That said, buyers and sellers in the Parkland Golf & Country Club area would be wise to take the findings lightly. The Case-Shiller Index is inherently flawed. As such, its results are neither practical — nor relevant — to everyday Americans.
There are 3 Case-Shiller flaws, in fact.
The first flaw is the index’s limited sample set. Wikipedia lists 3,100+ municipalities nationwide and we can be certain that real estate is bought and sold in all of them. The Case-Shiller Index, however, measures just 20 of them. That’s less than 1% of all U.S. cities. And then, within those tracked cities, Case-Shiller reports an average, lumping disparate neighborhoods and streets into one big number.
The “national figures” aren’t really national, and the “city data” doesn’t apply to your home, specifically.
The second Case-Shiller Index flaw is how it measures home value changes. The index only consider at “repeat sales” of the same home, so long as that home is a single-family, detached property. Condominiums, multi-family homes, and new construction are ignored in the Case-Shiller Index.
Because distressed properties account for such a high percentage of resales lately — 36% in December –foreclosures and short sales skew Case-Shiller Index worse.
And, lastly, the Case-Shiller Index is flawed by “age”. Because it reports closed sales a 60-day delay, December’s Case-Shiller Index is measuring the values of home sales contracts from September and October. The Case-Shiller Index, therefore, is a snapshot of the not-so-recent past, and does little to tell us about the next 60 days.
Overall, the Case-Shiller Index is helpful tool for economists and policy-makers, but it doesn’t do much good for individual homeowners across the cities of Parkland & Coral Springs or anywhere else. For accurate, real-time housing data in your local market, talk to a real estate professional instead.
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