Jumbo lenders continue to loosen underwriting requirements in an effort to compete for volume. Some lenders are even offering jumbos with loan-to-value ratios as high as 95 percent, while three years ago a 70 percent LTV ratio was the norm. “We’ve seen a fairly rapid loosening of standards on jumbo loans,” said Michael Fratantoni, chief economist at the Mortgage Bankers Association, during an event hosted this week by the Urban Institute. “They’re still tight, but now you can get a 5 percent down jumbo loan. And minimum credit scores have been coming down.” The MBA’s Mortgage Credit Availability Index has shown...