Case-Shiller Index : 85% Of Tracked Cities Showed Home Price Improvement In July

Standard & Poors released its monthly Case-Shiller Index this week. The Case-Shiller Index measures home price changes from month-to-month, and year-to-year, in 20 select U.S. cities. It also reports a "national" index; a composite of the values in said cities.

The most recent Case-Shiller Index shows a 0.9% rise in home values from June to July 2011. Home values were higher in 17 of the 20 tracked cities. Only Phoenix and Las Vegas fell. Denver was flat.

Also noteworthy is that, of all of the Case-Shiller cities, Detroit posted the strongest 1-year, home price improvement. As compared to July 2010, home values are higher by 1.2 percent in Detroit. This bests even Washington, D.C. -- long-believed to be the nation's healthiest housing market.

That said, we should be careful of the conclusions we draw from July's Case-Shiller Index -- both on a city-wide level, and on a national level. This is because, as with most "home price trackers", the Case-Shiller Index has flaws in its methodology. 

The first Case-Shiller Index flaw is its limited scope. Although it's purported to be a "nationa"l housing index, the data that comprises the monthly Case-Schiller Index is sourced from just 20 U.S. cities. These 20 cities represent just 0.6% of the more than 3,100 municipalities nationwide.

The second Case Shiller Index flaw is that the sample sets include single-family, detached homes only. iCondominiums, multi-unit homes, and new construction are specifically excluded from the Case-Shiller Index.

In some markets, "excluded" home types outnumber included ones.

And, lastly, the Case-Shiller Index is flawed in that it takes 2 months to gather data and report it. It's nearly October, yet we're still discussing the real estate market as it existing in July. For buyers and sellers in Apex , July in ancient history. 

The Case-Shiller Index is useful for tracking long-term trends in housing, but does little to help individuals with their choices to buy or sell a home. For relevant, recent real estate data, talk to a real estate agent in your market. Real estate agents are often the best source for real-time, real estate data.

Home Values Rose In June 2011

Has housing turned the corner for good?

The June 2011 Case-Shiller Index reading posted strong numbers across the board, with each of the index's 20 tracked markets showing home price improvement from May.

Some markets -- Chicago and Minneapolis -- rose as much as 3.2 percent.

The rise in values is nothing about which to get overly excited, however. The Case-Shiller Index is just re-reporting what multiple data sets have already shown about the summer housing market; that it was stronger than the spring market, and that a recovery is underway, but occurring locally, at different rates.

For example, the June 2011 Case-Shiller Index shows the following :

• Denver, Dallas, Washington D.C., and the "California Cities" bottomed in 2009. Each has shown steady improvement since.
• None of the Case-Shiller cities showed negative growth between May and June 2011.
• 12 of Case-Shiller's tracked cities have improved over 3 consecutive months.

In isolation, these statistics appear promising, but it's important to remember that the Case-Shiller Index is a backward-looking data set, focusing on just a portion of the national housing economy.

As an illustration, the Case-Shiller Index's "national report" only includes data from 20 cities nationwide. They're not the 20 biggest cities, either. Smaller metropolitan areas such as Minneapolis (#48) and Tampa (#51) are included.

Larger ones including Houston (#4), Philadelphia (#5) and San Jose (#10) are not.

In addition, the Case-Shiller index fails to track sales of condominiums, multi-unit homes and new construction. In some markets, including Chicago, these excluded home type can represent a large share of the overall market.

The Case-Shiller Index is a fine data set for policy makers and economists. It describes the broader housing market and shows long-term trends. For the individual home buyer in Raleigh , however, it's much less useful. More than "broad data", you want focused data that's current and relevant.

The best place for data like that is a local real estate agent.

Case-Shiller Shows Home Values Rolling Back 9 Years

The March Case-Shiller Index was released this week and it corroborates the findings of the government's most recent Home Price Index -- home values are slipping nationwide.

According to the Case-Shiller Index's publisher, Standard & Poors, home values fell in March from the year prior.

The March report was among the worst Case-Shiller Index readings in 3 years. On a monthly basis, 18 of 20 tracked markets worsened. Only Seattle and Washington, D.C. showed improvement, rising 0.1% and 1.1%, respectively.

On an annual basis, price degradation was even worse.

Washington, D.C. is the only tracked market to post higher home values for March 2011 as compared to March 2010. The national index has now dropped to mid-2002 levels.

As a buyer in today's market, though, you can't take the Case-Shiller Index at face value. It's methodology is far too flawed to be the "final word" in home prices.

The first big Case-Shiller Index flaw is its relatively small sample size. S&P positions the Case-Shiller Index as a national index but its data comes from just 20 cities total. And they're not the 20 most populous cities, either. Notably missing from the Case-Shiller Index list are Houston (#4), Philadelphia (#5), San Antonio (#7) and San Jose (#10). 

Minneapolis (#48) and Tampa (#55) are included, by contrast.

A second Case-Shiller flaw is how it measures a change in home price. Because the index throws out all sales except for "repeat sales" of the same home, the Case-Shiller Index fails to capture the "complete" U.S. market. It also specifically excludes condominiums and multi-family homes. 

In some cities -- such as Chicago -- homes of these types can represent a large percentage of the market.

And, lastly, a third Case-Shiller Index flaw is that it's on a 2-month delay. It's June and we're only now getting home data from March. Today's market is similar -- but not the same -- to what buyers and sellers faced in March. The Case-Shiller Index is far less useful than real-time data of a city or neighborhood.

The Case-Shiller Index is more useful to economists and policy-makers than to everyday buyers and sellers in Apex. For better real estate data for your particular neighborhood, ask your real estate agent for help.

A real estate agent can tell you which homes have sold in the last 7 days, and at what prices. The Case-Shiller Index cannot.

January 2011 Case-Shiller Index : Weak And Flawed

Standard & Poors released its Case-Shiller Index for the month of January this week. The index is a home valuation tool, measuring the monthly and annual changes in home prices in select cities nationwide.

January's Case-Shiller Index gave a poor showing. As compared to December 2010, home values dropped in 19 of the Case-Shiller Index's 20 tracked markets. Only Washington, D.C. gained. The results were only modestly better on an annual basis, too.

18 of 20 markets worsened in the 12 months ending January 2011.

According to the report, values are down 3.1% from last year, retreating to the same levels from Summer 2003. As a buyer or seller in today's market, though, don't read too much into it. The Case-Shiller Index is far too flawed to be the final word in housing.

The index has 3 main flaws, in fact.

The first flaw is the Case-Shiller Index's lack of breadth. The report is positioned as a national index, but its data is sourced from just 20 cities nationwide.

Putting that number in perspective: the Case-Shiller Index tracks home values from fewer than 1% of the 3,100 U.S. municipalities -- yet still calls the report a "U.S. Average".

A second flaw in the Case-Shiller Index is how it measures home price changes, specifically. Because the index only considers "repeat sales" of the same home in its calculations, and only tracks single-family, detached property, it doesn't capture the "full" U.S. market. Condominiums, multi-family homes, and new construction are ignored in the Case-Shiller Index algorithm. 

In some regions, homes of these excluded types represent a large percentage of the market.

And, lastly, the Case-Shiller Index is flawed because of the amount of time required to release it.

Today, it's almost April and we're talking about closed home resales from January which is really comprised of homes that went under contract in October -- close to 6 months ago. Sales prices from 6 months ago is of little value to today's Cary home buyer, of course.

The Case-Shiller Index can be a helpful tool for economists and policy-makers trying to make sense of the broader housing market, but it tends to fail for individuals like you and me. When you want accurate, real-time housing figures for your local market, talk to your real estate professional instead.