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Jed Kolko

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Springtime for Housing

Posted: 03/17/2012 12:12 pm

March marks the start of the housing season. Prices peak in May, sales in June, and inventories in July. In colder regions, seasonal swings are bigger, and the market peaks later.

The housing market rides the seasons.  Year in and year out, market activity has predictable ups and downs. Sometimes those seasonal patterns are hard to see when longer-term trends (like plummeting housing prices) or one-off events (like the homebuyer tax credit) drive movements in prices, sales and other housing indicators. But seasonal patterns are there, even when they're beneath the surface.

To understand the effects of long-term trends or one-time events on the market, housing wonks like to "seasonally adjust" data. That means we strip out the regular seasonal patterns in order to highlight trends or events. This is useful for deciding whether the market is really in recovery or assessing the impact of a housing policy.

But these seasonal patterns help show us what's really going on in the housing market, which is important because they give us hints about when we should search, list, buy, sell or build. In this post, I look at five measures of housing activity: search activity (Trulia), asking prices (Trulia), new construction starts (Census), existing home sales (NAR) and housing inventory (deptofnumbers.com).

Starts and Sales Swing with the Seasons

New construction starts and existing home sales fluctuate more throughout the year than other housing activities. The chart below shows that sales are typically 29 percent above their annual average in June and 31 percent below their annual average in January. Construction starts also swing 25 percent above and below their annual average over the year. No wonder builders and agents say theirs are seasonal businesses. Other activities float rather than swing with the seasons. Search activity rises 12 percent above its annual average in March. But inventories stay within 10 percent of their annual average every month, and asking prices stay within 5 percent of their annual average every month (see note below on asking prices).


The Spring Thaw Comes First to Buyers, then to Sellers

As the market comes out of winter hibernation, buyers wake up first. The table below shows when each measure hits its highs and lows. In the winter, all activity rests: searches, prices, starts, sales and inventories all slide to their yearly low in December or January.  Life resumes in March, as search activity pops up and stays above normal through August. Prices rise too and reach their annual high in May. Summer has endings and beginnings: sales peak in June, as do new construction starts. But inventory keeps climbing as some sellers miss the sales peak, topping out in July and August.

What do these patterns tell us? Homebuyers are a little ahead of sellers. Asking prices peak at the start of the season, so demand appears to rise ahead of supply. As supply catches up, prices ease back down and sales peak. After that, inventories build up a bit further through the summer.
High-Season Comes Stronger and Later in the North

Harsh climates fuel seasonality. It's harder to build homes in the snow, and a lot less fun to go to open houses (or host them). Construction starts in the Midwest are 2.5 times higher in June than in January, but in the South, construction starts are only 50 percent higher at the summer peak than at the winter low. Sales seasonality too is stronger in the Midwest and Northeast than in the South and West.

The best time to buy or sell? Depends on where you are. If you want to buy when inventory swells (or want to avoid those months for selling), inventory peaks in the summer across most of the country, but not in the Sunbelt. In Miami, Tampa and Orlando, inventory peaks in March; Las Vegas inventory peaks in October, and Phoenix inventory peaks in December -- just in time to buy a home for Christmas.

Looking to buy low or sell high? Nationally, asking prices peak in May and bottom in December, so sellers can get top dollar in the spring, while buyers can find bargains later in the year. In other words, buyers should be more patient than they are, while sellers should move faster to get their home on the market.  But prices tend to peak earlier in the South, as the map below shows, and later in the North, so the best deals come later in the year the farther North you are. And the harshest climates create the biggest swings: prices for similar homes vary more with the seasons in Minnesota, Illinois and Maine than in any other state.

Technical Details:

--- All data presented are the seasonal factors from the Census X-12 seasonal adjustment model, applied to at least five years of unadjusted raw data from each source. As each data source allows, I estimated separate seasonal factors for each metro, state, or region as well as for the U.S. overall.

--- Asking-price data from Trulia.com are adjusted for housing characteristics and neighborhood attributes. Therefore, the seasonal pattern in asking prices is not affected by seasonal changes in the types of homes that get listed.

 

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March marks the start of the housing season. Prices peak in May, sales in June, and inventories in July. In colder regions, seasonal swings are bigger, and the market peaks later. The housing market ...
March marks the start of the housing season. Prices peak in May, sales in June, and inventories in July. In colder regions, seasonal swings are bigger, and the market peaks later. The housing market ...
 
 
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Talk2PassiveActionVital
Stand against fa$ci$m or our children will kneel
02:30 PM on 03/19/2012
Two quick questions Joe.

1) In your colorful bar graph of search, price, starts, sales, and inventories peaks, I notice that following price's peak, there is nothing, yet for all the other categories, there is at least one month's further activity in the "fleshtone block" color. Do prices simply (and dramatically) drop all the way down to the gray "neither high nor low" level in less than a month?

2) Is there any data modeling that might reveal a difference in timing of intensity levels, by category, between urban/suburban markets and rural markets? That is, do rural markets within each state generally lag each state's urban/suburban counterparts?

Interesting to note the map key to price peaks shows no obvious correlation between the price peak as several predominantly rural states (Maine, Michigan, Minnesota and Montana) apparently experience price peaks before two states generally regarded as more urban-centered (Connecticut, Illinois).
10:54 AM on 03/19/2012
If you were head of Central Planning (howdy, Ben!) and were tasked with crippling the real estate market, here's what you would recommend.

1. Choke the market and banking sector with zombie banks. Central Planning creates zombie banks in one easy step: it allows insolvent banks to mark their impaired "real estate owned" to fantasy rather than to market.

Zombie banks have no incentive to auction off their holdings of real estate with defaulted, underwater or otherwise impaired mortgages, for having the market discover the price of these properties would immediately reveal the insolvency of the bank as properties it held on its books at (say) $400,000 were actually only worth $200,000.

Since the mortgage is (say) $350,000, then the bank would be forced to recognize a $150,000 loss (actually more with transaction fees, repair of the derelict property, etc.).

Since those valuations haven't arrived, millions of properties are being held off the market.

Confidence cannot be restored until the market clears the inventory and a real bottom is established.

This destruction of confidence undermines the entire market. Zombie banks create zombie valuations.

Keeping zombie banks alive via bogus valuations and shadow inventory of derelict and defaulted homes has another consequence: banks themselves cannot be confident that prices won't decline further, so it makes no sense for them to put capital at risk by issuing mortgages on real estate.

http://www.oftwominds.com/blogmar12/cripple-RE3-12.html
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02:05 AM on 03/19/2012
Thank you. Nicely presented.
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charon
Earth, love it or leave it!
05:17 PM on 03/18/2012
This is fascinating detail of how seasonality affects economic behavior. Isn't of much use to me besides entertainment though, since I'm 58, my house is paid off, and I'm planning to retire in it. Still interesting, though.