To: Haim R. Branisteanu who wrote (9142 ) 7/13/2004 6:29:32 AM From: Haim R. Branisteanu Respond to of 116555 MONTHLY PAYMENT JUMP But this time something important is different: Interest rates are inching up. It was the Federal Reserve-engineered decline in rates that inflated the housing bubble. But starting with a quarter-point increase in the funds rate on June 30, the Fed has begun what promises to be a prolonged tightening cycle. Even if the Fed's hikes are measured, higher mortgage rates will inevitably make houses less affordable. If 30-year fixed-rate mortgages rise just one percentage point, to 7.2% from their current 6.2% -- well within the range of forecasts -- house prices would have to fall 11% to keep new buyers' monthly mortgage payments from rising. If fixed rates went to 8%, prices would need to fall 20% to keep payments level. Rising rates will hurt more than in the past because the market is more dependent on heavily leveraged buyers. Mortgage debt has shot up even faster than home values since 2000, leaving homeowners' equity at just 55% of housing value, down from 72% in 1986, according to Federal Reserve data. Leverage intensifies the pain of falling prices. If, say, a buyer owes $450,000 on a house that's valued at $500,000 and the house's price falls 10%, the equity shrinks to zero. Heavy mortgage borrowing since 2000 has enabled the housing market to dodge an iron law: House prices can't perpetually rise faster than incomes. For the past four years, they have. The ratio of house prices to median family income is a record 3.4, a figure that's 19% above the 1975-2000 average, according to data from the Office of Federal Housing Enterprise Oversight and the Census Bureau. As rates rise, a return to the long-term-average ratio would require housing prices to fall 19% -- or incomes to shoot up an implausible 24%.