Case-Shiller: Seattle Home Price Drops Not Done Yet
It’s time once again for our monthly check-in of the S&P/Case-Shiller Home Price Indices (HPI).
For an explanation of how the Case-Shiller data is calculated, check out their methodology pdf. Also remember that the data released on the last Tuesday of a given month is for the period two months prior (i.e. – February data is released in April).
Here are the basic Case-Shiller stats for the Seattle area* as of February:
February 2009
Month to Month: Down 1.5%
Year to Year: Down 15.4%
Change from Peak: Down 20.9% in 19 months
The following chart shows the Seattle HPI scaled such that the July 2007 peak is 100% on the y-axis. Data on the x-axis is scaled to display the last time (pre-peak) the Seattle HPI was at or lower than it was in the latest data (June 2005).

The magnitude of February’s drop was roughly equal to the gain that was seen between June and July 2005, when the housing bubble was in full force here in Seattle. It is also worth noting that the rate of month-to-month decline definitely softened from the last few months. It will be interesting to see if Seattle’s HPI actually posts a small gain this spring, as it did last year.
Here’s a chart of Case-Shiller HPIs for all the markets that Redfin serves, so you can compare Seattle’s performance to other areas across the country:

And here’s our final chart, in which we line up the peak Case-Shiller HPI value for each of Redfin’s markets, so we can see how long each market has been declining, and how much it has dropped from the peak.

Of the 20 cities tracked by Case-Shiller, only Miami, Las Vegas, Los Angeles, and Atlanta had fallen further from their respective peaks than Seattle at the 19-month mark. The relative rapidity of Seattle’s decline is likely due to the fact that we were “late to the party” with respect to the bursting of the housing bubble. In effect, we have more ground to cover in a shorter amount of time in order to “catch up” to what’s happening in the rest of the country.
*[Case-Shiller defines Seattle as the Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area, which includes all of King, Pierce, and Snohomish counties.]
Mark said:
That last paragraph just makes no sense. In the last 19 months (since July 07), the only city to hold it’s value better (of the 7 mentioned) than Seattle was Boston and Seattle is ranked 8 out of 20 from the full list.
Looks like Seattle is weathering the storm better than most – according to the data.
From the last graph, you can see Seattle has been in decline for fewer months than other cities. This is also a positive sign for Seattle.
April 28, 2009 11:06 PM
Tim Ellis said:
Sorry I wasn’t clear. What I was trying to say is that when you look at each of the 20 Case-Shiller markets 19 months from their respective peaks, Seattle had fallen further than 15 of the cities, with only the four listed having fallen further than Seattle.
April 28, 2009 11:09 PM
Mark said:
You can move the graphs and say that the length of decline is different, but you can’t move the graphs and say the *rate* of decline is different.
April 29, 2009 8:47 AM
Tim Ellis said:
Mark, I still don’t understand what you’re trying to say.
In the 19 months following their respective peaks, here’s the average monthly rate of decline for each market:
-2.12% Miami, FL
-1.71% Las Vegas, NV
-1.58% Los Angeles, CA
-1.29% Atlanta, GA
-1.23% Seattle, WA
-1.22% Phoenix, AZ
-1.22% Tampa, FL
-1.11% Portland, OR
-1.08% Minneapolis, MN
-0.76% Cleveland, OH
-0.75% San Francisco, CA
-0.75% Washington, DC
-0.69% Detroit, MI
-0.61% Dallas, TX
-0.60% Chicago, IL
-0.50% Denver, CO
-0.41% San Diego, CA
-0.39% New York, NY
-0.38% Boston, MA
N/A Charlotte, NC
-0.75% Composite 10
-0.84% Composite 20
So yes, when comparing rates of decline since the peak, Seattle is falling fifth-fastest.
April 29, 2009 9:28 AM
Mark said:
Right – you can’t do that and conclude one market is *currently* falling faster than another market. The only way to determine that is to look at what they are doing now.
Also – to say Seattle is falling more rapidly is ignoring the national trends during the last 19 months. Seattle’s housing market decline started the month the Dow started dropping in huge chunks due to national housing concerns. See: http://en.wikipedia.org/wiki/July_2007. All markets started to accelerate their decline at this point and Seattle’s decline was not as steep as most. You can see this on the graph. You are using this as Seattle’s starting point. You are then using this point to compare against SF in 14 months earlier. The 14 months leading up to the huge losses in 2007 were relatively calm.
Again, you can move the graphs and make some conclusions, like Seattle peaked later than SF, but you can’t say it’s decline is currently steeper, because during the same time period, SF’s decline is steeper.
April 29, 2009 11:04 AM
rami said:
This is great info Tim. Thank you!
Was any forecasting analysis done to give an indication of how much further the Seattle market will decline? So the question is: if there’s a slight recovery in Seattle similar to what happened last Spring (’08), will the market still decline as it did after the slight ‘08 recovery?
April 29, 2009 1:30 PM
Clint said:
Good stuff Tim. And you’re definitely right about the sequential monthly rate of decline in the last 19 months.
April 29, 2009 9:30 PM
Clint said:
If we really want to nerd-out…Would be cool to know what the compounded monthly growth rate (CAGR) is for these cities in the 19 months following the peak. The average growth rate can be misleading…for example if you go from $100 to $50 in one month (50% decline) and then $50 to $75 the next month (50% increase) then the average growth rate is 0%, which doesn’t really make sense given you started with $100 and now have $75.
April 29, 2009 9:37 PM
Tim Ellis said:
Clint, I used the wrong terminology in my comment above. The percentages quoted are in fact the compounded monthly rate, not the straight averages, for the reason you state.
The formula for calculating compounded growth (or decline) rates is actually fairly simple:
{ ([End Value] / [Start Value]) ^ (1/[# Periods]) } – 1
It’s even easier when I just plug the numbers all into the handy Excel spreadsheet I created for doing this exact calculation.
Anyway, I apologize for the confusion.
April 29, 2009 10:02 PM
Tim Ellis said:
RE: Mark @ 11:04 AM –
I don’t think I said that Seattle was currently falling fifth-fastest. I was just comparing the speed of the declines in each market since the peak. Sorry if I wasn’t clear about that.
April 29, 2009 10:09 PM
Mark said:
Tim – you did say currently. You said we were going to catch up to the other markets – which means we are declining faster (right now). There’s no other way to catch up.
When I look at the last 19 months, most cities have had a faster rate of decline than Seattle. Given this fact, do you still think we’re going to catch up?
April 30, 2009 3:44 AM
Tim Ellis said:
Mark, since the only instances of the words “current” or “currently” on this page are from your comments, I wonder if you could clarify what I said that you interpreted to mean “Seattle is falling faster than other markets at the present time.”
April 30, 2009 6:59 AM
Bubbles & Behavior: Highlights From Robert Shiller’s Talk | Redfin Seattle Sweet Digs said:
[...] Sweet Digs « Case-Shiller: Seattle Home Price Drops Not Done Yet April 30, [...]
April 30, 2009 7:11 AM
Mark said:
When you said the following:
we have more ground to cover in a shorter amount of time in order to “catch up” to what’s happening in the rest of the country.
If you didn’t mean we were catching up now (currently) and were declining faster than others, what did you mean?
April 30, 2009 8:22 AM
Tim Ellis said:
Mark, it seems like you’re reading things into the post that aren’t there. I was just pondering a possible explanation for why Seattle’s line in that last chart would be over 5 percentage points below the Composite-20 line (”the rest of the country”) as of Seattle’s latest update.
It is a fact that prices in Seattle have declined faster since the peak than they did in most other markets tracked by Case-Shiller. I do not expect that will continue, but one possible explanation for why it has happened would be that we are “catching up.”
Although Seattle’s decline has been going on for less time than all but 2 markets (Portland’s is also at 19 months and Charlotte is at 18) our 21% total drop from the peak is already larger than five other markets that began declining before us.
So we are already “catching up,” but that does not mean we are currently declining faster than any other market.
April 30, 2009 8:34 AM
Tom said:
Thanks for the data, Tim. Any bets Mark is a realtor?
May 4, 2009 6:53 AM
Buyer on the Sidelines said:
Mark is definitely a realtor. I’ll put money on it.
May 6, 2009 5:51 PM
Mark said:
No, not a realtor. Planning on buying and I visit Redfin a lot.
Look – I tried to let everyone know that Tim was comparing Seattle in July 2007 with San Diego in 2005. July of 2007 was the worst price drop in history and somehow that means Seattle is dropping ‘relatively rapidly’ and needs to ‘catch up’. Tim has concluded that the individual peaks are related, and we should be able to move graphs to be able to predict future trends. You can’t do that with stocks that fall in a bubble, and you can’t do it with other markets, including real estate.
Anyway, I dropped it. It’s Tim’s forum.
May 14, 2009 8:19 AM