“Nonagency jumbo lenders began dipping their toes in the water as early as 2011, and even more so into the end of 2012. Strong loan quality due to tight underwriting combined with competition between large banks and securitzers has led to relatively increased demand. Wells and Chase are keen to compete with securitizers like Redwood or Sequoia in order to capture potential income streams from jumbo clients’ bank business.”

(Read more: Higher mortgage rates may mean easier credit)

In addition, Fannie Mae and Freddie Mac, which back and bundle two-thirds of conventional loans, have been raising the fees they charge to banks, so-called guarantee fees, mostly to protect themselves against default. Guarantee fees have nearly doubled in just the past year.

“As G-fees move higher, this increase gets added into conforming mortgage rates,” said Guy Cecala of Inside Mortgage Finance. “It’s a factor, but not the biggest one, allowing portfolio jumbo lenders to match or undercut conforming mortgage rates.”

The bigger factor, said Cecala, is that 92 percent of jumbo mortgages are made by banks that fund the loans with their deposits and then hold them in a portfolio. Given that the interest paid on consumer deposits in banks is still incredibly low, lenders can still make a profit on mortgages priced at 4 percent or less if they want to. In fact, jumbo loans, by some lenders, can actually cost less than conforming.

Article source: http://www.cnbc.com/id/100962728

“People who weren’t sure about whether they were going to buy a house or not are coming back in, and that’s especially true of the affluent buyers,” said Watters. “I know at Chase at least we’ve also put a lot of emphasis on making sure we’re doing what’s best for those affluent buyers, including adding more bankers and working with our chase private client customers to really focus on opportunities in the jumbo space.”

(Read More: Rising Rates Turn Investors From REITs)

Watters admited that investors are still slow to return, as the private label market tries to figure out what securitization standards should be. The complete lack of standards during the housing boom, when securities were issued with bits and pieces of loans and wide ranges of risk, led to the downfall of both the mortgage and the housing markets.

“We are not slicing and dicing any loans. We’re selling loans as whole loan products,” assured Watters. “These are well-underwritten loans, great documentation, great borrowers with strong fico scores, large down payments, so these are great credit products, great investment for people who are looking to get additional yield.”

—By CNBC’s Diana Olick; Follow her on Twitter @Diana_Olick or on Facebook at facebook.com/DianaOlickCNBC

Questions? Comments? RealtyCheck@cnbc.com

Article source: http://www.cnbc.com/id/100802833