Tighter lending standards may cut home demand by 15%

Study predicts 5% drop in home prices for 2007

Problems in mortgage lending go “well beyond subprime,” and the tightening of loan underwriting standards now underway is likely to push demand for homes down 15 percent and depress prices by 5 percent this year.

That’s the rather gloomy forecast by analysts who follow the stocks of major home builders for Banc of America Securities LLC.

In a report issued Tuesday, “Dissecting the Mortgage Distress,” BAS analysts said there’s already an excess supply of 800,000 existing homes on the market, and another 300,000 will soon be added to inventories through foreclosure.