And now everyone knows that house prices CAN actually fall

Gary Shilling

Most of all, the NAR’s Housing Affordability Index is largely irrelevant today because in contrast with the earlier post-World War II years, prospective buyers know that house prices can, and do, fall.

Who wants to buy an expensive asset with a big mortgage that may be worth much less shortly? And the financial leverage created by a mortgage magnifies the risk tremendously. Someone who buys a house with 5% down sees their equity wiped out if the price falls only 5%. So the fall in house prices and mortgage rates, which have driven up the NAR’s measure of affordability, have been offset by stronger forces.

So, too, will any future increases in the affordability index in all likelihood. The Fed may embark on further purchases of mortgage securities, which could reduce mortgage rates further, but the central bank will probably only act in response to additional economic weakness that will discourage homebuyers. The further declines in house prices we foresee will make them cheaper, but also convinces prospective owners that they are even worse investments.

The rebound in house prices is also suspect and may have peaked out (see chart above). Furthermore, both the previous decline and subsequent reversal probably overstate reality. Earlier, the many sales of foreclosed houses or by distressed homeowners tended to be lower-priced houses and, therefore, depressed average prices. The recent swoon in Los Angeles house prices compared with the early 1990s drop suggests this is true. Conversely, the recent rebound may be overstating reality since, as our good friend and great housing analyst Tom Lawler has noted, the homebuyer tax credit may have induced some to pay up to beat the deadline and to favor higher priced “traditional” house sales over “distressed” homes.

Tom also points out that the Case- Shiller price index for July, which showed increases in 13 of the 20 metro areas (not seasonally adjusted), was based on transactions from April to June and, therefore, included tax credit- related settlements in May and June. Also, seasonally-adjusted data reveals declines in 16 of 20 metro areas and a small 0.1% fall from June to July. Another Home Value Index compiled by Zillow reports that prices nationwide fell in July from June, the 49th consecutive monthly fall. That puts them down 24% from the May-June 2006 peak, similar to the 28% drop in the Case-Shiller index.