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Since the mid 1980s, reputable groups have published information regarding real estate values and trends by regions of the country. Because many organizations lacked access to specific property data, most importantly the total living area, sales data was always presented as the Median Sale price or, in some cases, the Average Sale Price. Over the past five to seven years, the Median Sale Price is the constant.

As valuation consultants serving the assessment industry, we have discovered over the past ten years the weakness in presenting only the Median Sales Price. Most importantly, what are we comparing to for the baseline. Our analysis focuses on the sale price per square foot, a factor used by the assessment and appraisal industry. Over the past 18 months, we have monitored reports relating to the change in property values and the significant declines. Many economists correctly state that home values exceed the level of affordability as compared to income levels.

Based on this one standard, there appears to be wide spread belief and acceptance relating to the current declines in property values. We do not dispute the adjustment, but rather the statements of how significant the adjustments have been. The following is a perfect example of why we need to study the market on a rate per square foot basis:

  • Median Sales Price for Zip Code xxxxx in 2006 was $303,000
  • Median Sales Price for Zip Code xxxxx in 2007 was $283,000
  • Median Sales Price for Zip Code xxxxx in 2008 was $244,000

The pattern indicates a decline in values of 6.7% from 2006 to 2007, 13.8% from 2007 to 2008 and overall for two years 19.5%.

By adding in the median square footage of the sales and presenting the sale price per square foot, a similar pattern of downward valuation occurs, but the rate of decline is lower:

  • Median Sales Price for Zip Code xxxxx in 2006 was $303,000, 2,144 sf $141.32 sppsf
  • Median Sales Price for Zip Code xxxxx in 2007 was $283,000, 2,080 sf $136.05 sppsf
  • Median Sales Price for Zip Code xxxxx in 2008 was $244,000, 1,980 sf $123.23 sppsf

The pattern indicates a decline in values of 3.8% from 2006 to 2007, 9.5% from 2007 to 2008 and overall for two years 12.9%.

Analysis of sales activity and valuation increases since 1996 indicate to clear patterns:

  1. The median house size increased because of new construction, with typical homes exceeding 2,100 square feet versus existing homes with a median square footage of 1,850. So part of the valuation increase is based on larger homes selling, not market appreciation. New homes are on average 12% larger than homes built prior to 1996. We have collected and measured this data for over 30 million properties, notably Arizona, Florida and Nevada where there is a oversupply of housing. Each state has different median square footage values, but similar patterns.
  2. Market appreciation or depreciation can be measured on the quality and condition of the home as well. When a market is appreciating, property owners will maintain their homes because of the potential added value for selling a home in good to excellent condition. Real Estate brokers and agents stress this constantly when selling and showing homes. Buyers also seek houses with low cost of maintenance and repair in a stable and appreciating market. Conversely, when values decline property owners may have limited funds to maintain values and most significantly distressed sales have an impact on property values.

Distressed sales indicate a change in the purchaser profile as well. When foreclosures dominate the market, few buyers are willing to pay top dollar for quality homes, opting instead to acquire a bargain or fixer-upper. These trends in real estate values have occurred in prior down cycles and will reverse to the up cycle trend in the future.

As we emerge from this current down cycle, there needs to be shift in the manner for which data is presented and analyzed. Over or understating valuation changes will only lead to further instability and significant shifts in the real estate cycle.

I look forward to commentary from other professionals relating to this issue.

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  •  
    Good point, homes are getting bigger, so declines in resale prices are not as significant on a per sq. ft. basis. Right? Well .... duh ...NO! Just the opposite.
    May 17 10:11 AM | Link | Reply
  •  
    For the foreseeable future those who can afford a large home will find what they want in homes that have already been built. Some small homes will be lost to tear-down, fire etc., but that will have little effect on median size.
    May 17 10:24 AM | Link | Reply
  •  
    ...ooh. somebody has ink on their forehead!
    May 17 11:11 AM | Link | Reply
  •  
    That's why Case and Shiller rely on resales of homes. The existing house stock does not experience significant increases in square footage.

    And one has to remember that sales of newly constructed homes are probably a tiny fraction of the total housing stock and hence not that important.

    Case-Shiller is the right way to measure housing price movements.

    If you are getting big differences relative to Case-Shiller, I would be very concerned about the accuracy of your figures.

    The burden is on you ...

    May 17 11:44 AM | Link | Reply
  •  
    of course you dont count the homes that have toxic chinese wall board in them.inspectors will have to look @ that problem.empty houses breed mold that is more unseen than obvious.& inspectors better make sure to find it or have good liability insurance. in certain climates the termites will feast on empty dwellings.
    May 17 04:55 PM | Link | Reply
  •  
    Very good article. Investors and homeowners in other countries have always looked at $ per square feet / meter, especially in high density areas. Somehow, US market analysis don't seem to analyze real estate prices beyond the aggregate measures.

    I'd argue that Hong Kong is the most market efficient real estate market in the world. Property drives the city's wealth (just look at how many billionaires made their fortunes in real estate), and the locals live & breathe real estate. Everyone there looks at specific properties (apartments) at specific parts (streets) of the city, and compare sales prices and rental prices per square feet, normalized for age of property, feng shui, and other factors.

    It's about time someone times a more statistically rigorous way of analyzing US property market, and start reporting the real, empirical data, as opposed to generalized and potentially skewed metric!
    May 17 08:00 PM | Link | Reply
  •  
    Oh but don't forget that newer homes often have TALLER ceilings than homes from the 1950's and SHORTER ceilings than homes from the 1890's. If we REALLY want to teach those tweed wrapped Case Shiller stuffed shirts a lesson, let's go straight to the top of the food chain and compare cubic footage.

    Sorry guys, I can't bite. Unless you can include a discounted net present closet area factor, that bonus room over the 2.5 car garage is going to make your analysis smell all the way from the optional mud-room bump-out.

    Let the realtors quibble over wether or not to include the permit-free grandfathered solarium as "finished" space. A dwelling unit is a dwelling unit.

    May 17 09:31 PM | Link | Reply
  •  
    A home is fundamentally a family dwelling, not an investment. The price of such a home, new or used, regardless of size, cannot exceeded an affordable amount in terms of income. The value of the home is what a willing buyer can pay and hopefully still remain solvent. In 2006, median new home prices peaked at about 257,000, vs. a median family income of 58,000. A house therefore cost 4.43 times income.

    In 1996, a new home peaked at 144,000, with income at about 42,000. This gives a value of 3.42. Ignoring all other factors, sub-prime, Fed policy, and the credit crisis, if prices had kept in line with incomes there might not have been a housing crisis; a bubble, but not a crisis. The fundamental lack of affordability is the problem.

    Say income just kept pace with CPI. It should then come in at about $61,000 for 2009. This gives a house price of 209,000. The Feb. 2009 home price came in at $208,700.
    May 18 01:50 AM | Link | Reply
  •  
    Mortgage interest rates are an important factor in affordability - lower interest rates mean lower payments, higher affordability. The current rates are at historic lows.

    Like every other item demand-supply determines supply. Currently the demand is too low (job losses etc) and supply too high (unsold homes and foreclosures). So home prices will continue to fall, likely another 20/30% down from here.
    May 18 02:39 AM | Link | Reply
  •  
    You have made several valid points. However, because property sales are not analyzed on a per square foot basis, one cannot accurately track the market. In the past 15 years, new housing activity has accounted for a significant level of sales in areas like Arizona, Florida and Nevada. One cannot ignore this market influence. Our data indicates over 300,000 new homes were built since 1996 in Nevada (this is over 40% of actual properties); over 1.8 million units in Florida since 1996 representing over 20% of all properties and over 400,000 new units in Arizona representing over 25% of all properties. This can be attributed to the shift in demographics relating to the aging population in the United States. Incidentally, if we study the areas with high foreclosure rates, these state rank in the top five. One can argue the cause and effect of unabated development and the affect on housing values.
    Several other comments posted to this article appropriately state the affect of housing affordability and the ability to measure additional information. As a nation, we cannot ignore certain facts and rely on techniques that are outdated because we simply lack the desire to measure against additional data elements. Nor can one blindly state the current adjustment is being incorrectly reported. Case Shiller is a valid measurement focusing on 20 regional areas. We need to take the Case Shiller findings and seek greater standards and more data for analyze. The opportunity is upon us to establish a base standard that we can move forward with to minimize manipulation of real estate values in the future.
    The one area that is overlooked in the United States is the quality of data used for the Assessment of properties by local jurisdictions. This information is very useful and very accurate in regards to raw data. Over 26 states www.orps.state.ny.us/r... require local jurisdictions to reassess properties at least every five years at 100% of market value or a uniform percentage of market value. The use of this raw data enables statistical research of sales activity and changes in the real estate market.
    Independent analysis of this data is critical because the macro level view of the market ignores local bias and development activity. Case Shiller should be applauded for setting a standard to at least provide some unit of measure. The investment community must now seek a standard that demands greater analysis and understanding.

    On May 17 11:44 AM American in Paris wrote:

    > That's why Case and Shiller rely on resales of homes. The existing
    > house stock does not experience significant increases in square footage.
    >
    >
    > And one has to remember that sales of newly constructed homes are
    > probably a tiny fraction of the total housing stock and hence not
    > that important.
    >
    > Case-Shiller is the right way to measure housing price movements.
    >
    >
    > If you are getting big differences relative to Case-Shiller, I would
    > be very concerned about the accuracy of your figures.
    >
    > The burden is on you ...
    >
    May 18 11:21 AM | Link | Reply
  •  
    You have made several valid points. However, because property sales are not analyzed on a per square foot basis, one cannot accurately track the market. In the past 15 years, new housing activity has accounted for a significant level of sales in areas like Arizona, Florida and Nevada. One cannot ignore this market influence. Our data indicates over 300,000 new homes were built since 1996 in Nevada (this is over 40% of actual properties); over 1.8 million units in Florida since 1996 representing over 20% of all properties and over 400,000 new units in Arizona representing over 25% of all properties. This can be attributed to the shift in demographics relating to the aging population in the United States. Incidentally, if we study the areas with high foreclosure rates, these state rank in the top five. One can argue the cause and effect of unabated development and the affect on housing values.
    Several other comments posted to this article appropriately state the affect of housing affordability and the ability to measure additional information. As a nation, we cannot ignore certain facts and rely on techniques that are outdated because we simply lack the desire to measure against additional data elements. Nor can one blindly state the current adjustment is being incorrectly reported. Case Shiller is a valid measurement focusing on 20 regional areas. We need to take the Case Shiller findings and seek greater standards and more data for analyze. The opportunity is upon us to establish a base standard that we can move forward with to minimize manipulation of real estate values in the future.
    The one area that is overlooked in the United States is the quality of data used for the Assessment of properties by local jurisdictions. This information is very useful and very accurate in regards to raw data. Over 26 states www.orps.state.ny.us/r... require local jurisdictions to reassess properties at least every five years at 100% of market value or a uniform percentage of market value. The use of this raw data enables statistical research of sales activity and changes in the real estate market.
    Independent analysis of this data is critical because the macro level view of the market ignores local bias and development activity. Case Shiller should be applauded for setting a standard to at least provide some unit of measure. The investment community must now seek a standard that demands greater analysis and understanding.



    On May 17 11:44 AM American in Paris wrote:

    > That's why Case and Shiller rely on resales of homes. The existing
    > house stock does not experience significant increases in square footage.
    >
    >
    > And one has to remember that sales of newly constructed homes are
    > probably a tiny fraction of the total housing stock and hence not
    > that important.
    >
    > Case-Shiller is the right way to measure housing price movements.
    >
    >
    > If you are getting big differences relative to Case-Shiller, I would
    > be very concerned about the accuracy of your figures.
    >
    > The burden is on you ...
    >
    May 18 11:24 AM | Link | Reply
  •  
    I like your metric of price/square foot versus median home price. In order to understand home sale trends, it would be useful to know how many people/square foot. Are we moving towards those larger homes being occupied by more people?
    May 18 11:35 AM | Link | Reply
  •  
    This account is witless, heartless and, dare I say ... homeless. (I know, I know ... humor and money don't mix but I keep trying.)

    When will market values reflect economic fundamentals and when will analysts stop twisting facts against the cold winds of economic reality?

    On the Twelfth of Never,

    when the the homeless are classified as unemployed,
    when Timothy Geitner spends more time with his family,
    when Mr. Mouse moves from his penthouse back to his mouse hole
    and when Bernie Madoff is elected president.

    As I said, on the Twelfth of Never.

    Keep obfuscating and never worry about employment. You'll get a job at the Ministry of Truth when the American economy collapses.
    May 19 12:03 PM | Link | Reply
  •  
    Case Shiller methodology is good - it measures the price change of the same house - so loaction etc are imputed in. However in this methodology upgrades or upkeep are not considered. One house may have put newest upgrades and another may have let everything degrade. So no methodology is perfect.
    May 19 01:14 PM | Link | Reply
  •  
    Given your 1st assumption :

    " The median house size increased because of new construction, with typical homes exceeding 2,100 square feet versus existing homes with a median square footage of 1,850."

    Assuming argumento that this is correct any mesure of median home price would under estimate the move in price per square foot since median sq ft has increased as well.

    Since avg sq ft has increased by 13.5% a median home price fall of 19.5 % should be adjusted upwards by (.135X.195) or 2.6%. This would give you an adjusted price decline of 22.13%.

    Your article seems to suggest the inverse. Please correct me if Im reading this wrong ( anyone)

    May 19 02:44 PM | Link | Reply
  •  
    House price measurements impute home size change by taking into consideration only the price change of the same house (existing homes). So to a large extent it neutralizes the home size increase change.

    On May 19 02:44 PM Thomas Wagner wrote:

    > Given your 1st assumption :
    >
    > " The median house size increased because of new construction, with
    > typical homes exceeding 2,100 square feet versus existing homes with
    > a median square footage of 1,850."
    >
    > Assuming argumento that this is correct any mesure of median home
    > price would under estimate the move in price per square foot since
    > median sq ft has increased as well.
    >
    > Since avg sq ft has increased by 13.5% a median home price fall of
    > 19.5 % should be adjusted upwards by (.135X.195) or 2.6%. This would
    > give you an adjusted price decline of 22.13%.
    >
    > Your article seems to suggest the inverse. Please correct me if Im
    > reading this wrong ( anyone)
    >
    May 19 04:33 PM | Link | Reply
  •  
    That may be a great house and a super value on paper... but the fact it overlooks Interstate 66 is going to be a deal breaker. Yes, the square footage is the same... but the fact it overlooks an industrial area is a deal breaker.

    I see this first hand everyday on the ground floor of the business... academic numbers mean nothing to buyers who have compared 20 homes in any town across the U.S. Buyer confidence changes on a dime, and today's buyers create the data you'll see next month.
    May 19 05:06 PM | Link | Reply
  •  
    Thanks to all for the comments posted. Some many valid points are presented.

    The argument I put forth is that more data must be analyzed because real estate is to complex. Building Size, Location (and that means overall location as well as exposure that is negative or postive), Age of Home and Land Size tend to be the most common and high value impacts in real estate.

    There are many more components as well, I am just identifying the top four. So as I stated before, why are we only lloking at one.

    Case-Shiller: This study focus on resales. The average time between sales is seven to eight years. We need to think about this long and hard.

    No one is saying that the markets were not over heated and over valued. What I hear the most is how much have values declined.

    Just like appreciation, depreciation must be measured on the same consistent basis. The base data is not the same as it was three years ago. Case-Shiller acknowledges this.
    Jul 03 11:20 AM | Link | Reply
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