Which Model Is More Accurate : The Case-Shiller Index Or The Home Price Index?

Filed Under (Home Values) by Rick on 09-09-2010

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Home Price Index from April 2007 peak

The private-sector Case-Shiller Index reported home values up 5 percent nationwide in June. The government’s own Home Price Index, however, reached a different conclusion.

According to the Federal Home Finance Agency, month-to-month home values fell 0.3 percent in June, and values are down by 1.7 percent from June 2009.

So, as a home buyer and/or homeowner , by which valuation model should you make your bets?  Perhaps neither.

This is because both the Case-Shiller Index and the Home Price have inherent methodology flaws, the most glaring of which is their respective sample sets.

The Case-Shiller sample set, for example, comes from just 20 cities across the country — and they’re not even the 20 most populated cities. Together, the Case-Shiller cities represent just 9 percent of the overall U.S. population.

That’s hardly representative of the housing stock overall.

By comparison, the Home Price Index tracks home sales everywhere — every city in every state — but it specifically excludes certain properties.  The Home Price Index does not track sales of homes for which the financing comes from agencies other than Fannie Mae or Freddie Mac. This means that as FHA loans grow in popularity, the pool of Home Price Index-eligible homes is reducing.

The HPI ignores homes backed by “jumbo” loans, too.

Therefore, the “right” model for home values cannot come from national data at all — it can only come locally. Neither Case-Shiller nor the government has the tools to get as granular as a neighborhood. A real estate agent in the area does, however.

The best way to get a pulse for what’s happening in markets right now is to talk to somebody with good data.

Home Values Within 12.5 Percent Of April 2007 Peak, Nationwide

Filed Under (Home Price Index) by Rick on 08-06-2010

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Home Price Index from April 2007 peak

According the Federal Home Finance Agency’s Home Price Index, home values are now off just 12.5 percent from their April 2007 peak nationwide.  This, after a half-percent monthly increase in prices in May, on average.

Given the state of the market since April 2007, the Home Price Index results are a positive for both the housing market and the economy, but we have to remember that May’s half-point increase is an average, and not specific to a particular area.

In contrast to “national markets”, the real estate markets in which you and I live are decidedly local.  It’s a major difference and the distinction renders the Home Price Index somewhat less important.

After all, the HPI doesn’t account for housing activity in individual neighborhoods , nor does it track value across cities. Instead, it summarizes data in giant chunks of geography.

A quick look at the HPI regional data proves the point. Of the HPI’s 9 tracked regions, only one was within one-tenth of one percent of the national, half-point average.  The others varied by as much 1.3 percent.

As a sample:

  • Mountain Region : + 1.7 percent
  • New England : + 0.2 percent
  • South Atlantic : +1.0 percent

And this is on a regional basis. The HPI’s applicability to state, city and neighborhood markets is even less appropriate.

Real estate values cannot be captured in a national survey. For home buyers and seller, what matters is the economics of a block, on a street, in a neighborhood.  That type of granularity can’t be tracked in a report like the Home Price Index.

The best place to get that data is from a local real estate agent that knows the market well.

Case-Shiller Shows Home Price Improvement In 90% Of Cities

Filed Under (Miscellaneous) by Rick on 06-30-2010

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Case-Shiller Change In Home Values Mar-Apr 2010

Standard & Poors released its Case-Shiller Index Tuesday.  The index is a monthly home valuation report from select cities and among the private sector’s most popular home pricing models.

In reviewing the April Case-Shiller Index and its accompanying analysis, it appears that the housing market’s rebound is gathering momentum.

In the index’s 20 tracked cities:

  • 18 of 20 improved from March to April 2010
  • Versus April 2009, home prices are up nearly 4 percent
  • The two “down” cities from April — Miami and New York — are off just 0.5% and 1.0% annually, respectively

Furthermore, as another sign of strength, San Diego, a city in which homeowners have lost a lot of equity since 2007, has now shown 12 straight months of home price improvement.

However, the Case-Shiller Index must be kept in context. It’s far from perfect.

For one, the index reports on a 60-day delay; it’s only now showing data from the end of April, when the federal homebuyer tax credit was expiring. Home sales have been weak since then it’s been reported.

And second, the Case-Shiller Index is limited to just 20 cities nationwide. Therefore, the index doesn’t consider every home sale in every American city — it only considers a select few. Many more U.S. homes are excluded from the Case-Shiller Index than are included.

But, despite its flaws, the Case-Shiller Index remains important with respect to economic analysis. Much like the government’s Home Price Index, Case-Shiller helps to identify broader trends in housing that shape government and monetary policy.

The Home Price Index Shows Some Regions Up, Some Regions Down

Filed Under (Miscellaneous) by Rick on 02-26-2010

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Monthly changes in Home Price Index Since April 2007

Earlier this week, the private-sector Case-Shiller Index showed home prices slightly lower between November and December.  Thursday, the public-sector Home Price Index showed the same.

Publishing on a 2-month lag, the Federal Home Finance Agency said home prices fell by 1.6 percent nationally in December.  And that’s an average, of course.  Some regions performed well in December as compared to November, others didn’t.

  • Values in the Middle Atlantic states improved slightly
  • Values in New England were essentially unchanged
  • Values in the Mountain states sagged, down 3.5%

These aren’t just footnotes. They’re an important piece toward understanding what national real estate statistics really mean. In short, “national statistics” are just a compilation of a bunch of local statistics.

For example, if we dig deeper into the FHFA Home Price Index 70-page report, we find that cities like Terre Haute, IN, Buffalo, NY, and Amarillo, TX posted year-over-year home price gains. You won’t see that in a “national” report.

Furthermore, it’s a sure bet that those same cities, you could find neighborhoods that are thriving, and others that are not.  Just because the city shows higher home values overall, it won’t necessarily be the case for every home in the city.

Every street in every neighborhood of every town in America has its own “local real estate market” and, in the end, that’s what should be most important to today’s buyers and sellers.  National data helps identify trends and shape government policy but, to the layperson, it’s somewhat irrelevant.

So, when you need to know whether your home is gaining or losing value, you can’t look at the national data.  You have to look at your block — what’s selling and not selling — and start your valuations from there.

Posted by Rick Bosl on February 26, 2010 | Tags: Home Price Index

Home Values Rose In November 2009 By Another 0.7 Percent

Filed Under (Miscellaneous) by Rick on 01-29-2010

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Home Price Index April 2007 to November 2009

Reporting on a two-month lag, the government said home values rose 0.7 percent in November. 

National home prices are at their highest point since February 2009.

But before we look too much into the FHFA’s Home Price Index, it’s important that we’re cognizant of its shortcomings; the most important of which is its lack of real-time reporting.

According to the National Association of Realtors™, 80% of purchases close within 60 days. As a result, because of its two-month delay, the Home Price Index report actually trails today’s market data by an entire sales cycle.

This is one reason why home values appear to be rising even while new data shows that both Existing Home Sales and New Home Sales fell flat last month.  The home valuation report is using data from November; the sales reports are using data from December.

The Home Price Index is a trailing indicator and next month, as the Spring Market gets underway, the government will be reporting data from the holidays.

The same is true for the Case-Shiller Index. It, too, operates on a 2-month lag.

All of that said, however, long-term trends do matter in housing and the Home Price Index has shown consistent improvement over the last 10 months.  In many markets, home sales are up, home supplies are down, and values have increased.  This trend should continue into the early part of 2010, at least.

If you’re wondering whether now is a good time to buy a home , consider low prices, cheap mortgages and an available tax credit as three good incentives.  By May, none of them will likely be available.

Posted by Rick Bosl on January 29, 2010 | Tags: Home Price Index