The jumbo mortgage market shrank during the housing downturn. Jumbo mortgages, defined as loans with an original balance exceeding $417,000, contracted disproportionally after the onset of the housing crisis with house prices plunging and the private mortgage market shattered. As the housing market begins to recover and the private mortgage market heals, Goldman Sachs examine the future prospect of the jumbo mortgage market.

Jumbo Mortgages Make A Comeback: Goldman Sachs

Growth opportunities in the jumbo mortgages market are significant

There are three reasons why we are optimistic about the future of the jumbo mortgage market. First, rising house prices imply more expensive homes and a higher demand for jumbo mortgages. Second, today’s tight mortgage lending standards affect jumbo mortgage borrowers less; future easing of lending standards is likely to benefit jumbo mortgage borrowers more. Lastly, the private sector will pick up a larger share of the pie as the government tries to reduce its footprint in the mortgage market.

The NON-Agency Jumbo Mortgage

Three reasons why non-agency jumbo mortgages will grow

The US jumbo mortgage market took a big hit during the housing downturn. According to the Mortgage Bankers Association (MBA), total mortgage originations fell by a quarter from 2007 to 2012. In comparison, the origination volume of mortgages larger than $417,000 halved during this period. The decline is particularly dramatic in the non-agency sector (Exhibit 1). The disproportional decline in jumbo mortgage originations had much to do with the 30% fall in national house prices. In this Mortgage Analyst, we assess the prospect of the jumbo mortgage market and conclude that the future of this market is bright.

To be clear, in this report, we define “jumbo” mortgages as loans with an original balance above $417,000. A more typical definition of jumbo mortgages relies on the agency conforming loan limit which varies over time and across locations.1 We choose to use a simple cutoff of $417,000 to avoid changes to the conforming loan limit affecting our analysis. By this definition, jumbo mortgages constitute 5.4% of all outstanding mortgages by loan count and 19% by loan balance at present.

Our optimism for the jumbo market, and the non-agency jumbo market in particular, comes from three sources. First, we expect continued house price appreciation over the next few years, which will lead to an increasing number of expensive homes that may need jumbo mortgage financing. Second, we expect mortgage lending standards to ease among high-income borrowers with solid credit quality. Jumbo mortgage borrowers tend to fall into this category and may increase their borrowing on the back of improving credit availability. Third, currently, 20% of jumbo mortgages are guaranteed by GSEs and FHA/VA. As GSEs and FHA/VA contemplate reducing their dominant presence in the market, a growing share of the jumbo mortgage market will be picked up by the private sector.

Jumbo Mortgage Origiations Fell

The number of high-value homes is growing

The most important determinant of the size of the jumbo mortgages  are the number of high-value residential properties. Assuming a standard 20% down payment, the $417,000 cutoff implies a property value threshold of $521,250. More properties valued above the $521,250 threshold suggest a higher demand for jumbo mortgages.

The geographical distribution of high-value properties is uneven. According to the 2011 American Community Survey (ACS), 9.9% of owner-occupied homes in the US were worth $500,000 or more. In Hawaii, Washington DC, and California, more than 30% of the homes were high-value properties. In West Virginia, Iowa, South Dakota, Mississippi, and Indiana, less than 2% of the homes were worth $500,000 (Exhibit 2).

Continued house price appreciation means that an increasing number of homes will become high-value properties. The Zillow Home Value Index shows that national house prices increased 5.5% in 2012. The Zillow Home Price Expectation Survey indicates that market participants expect house prices to increase 5.3% in 2013, 4.5% in 2014, 4.0% in 2015, and 3.5% in 2016. Applying these house price growth rates to the 2011 ACS propertylevel data, we find that the percent of homes worth $500,000 or more will increase from 10.4% in 2012 to 12.8% in 2016 (Exhibit 3). This means that there will be an additional 2 million homes worth $500,000 or more in 2016 compared with 2012.

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Lending standards are likely to ease for high-income borrowers

A rising number of high-value homes is one necessary condition for a growing jumbo mortgage market; another necessary condition is banks’ willingness to lend to the borrowers. Mortgage lending standards tightened significantly after the housing crisis. But high-income borrowers purchasing expensive homes are less affected than other borrowers for two reasons.

The share of high-value Properties

The Tightening of Mortgage lending

First, the tightening of mortgage lending standards was concentrated at the lower end of the credit quality spectrum. Exhibit 4 contrasts the distribution of borrower FICO scores among loans originated in 2002 and 2012. The difference in the patterns suggests that borrowers with impaired credit history face much more challenges in obtaining loans today than other borrowers: only 3% of the loans originated in 2012 had FICO scores lower than 640, compared with 14% in 2002.

Borrowers With High-Value homes

Second, borrowers with high-value homes tend to have higher income and stronger household balance sheet than other borrowers. As a result, these borrowers are less likely to experience significant difficulties in obtaining loans even in the post-crisis environment of tight lending standards. The 2010 Survey of Consumer Finances (SCF) data suggest that borrowers with home value above $500,000 have more education (83% vs. 42% with a college degree), higher income ($178,905 vs. $63,023 median household income), more assets ($594,500 vs. $30,200 median financial assets), and lower debt burden (19% vs. 25% median back-end debt-to-income ratio) compared with other borrowers (Exhibit 5).

Going forward, lending standards are likely to loosen more for high-income borrowers with good credit quality. In fact, the April 2013 Senior Loan Officer Opinion Survey (SLOOS) conducted by the Federal Reserve reported that, relative to a year ago, a modest net fraction of banks were more likely to approve an application with a FICO score of 720 and a 20% down payment. However, about one-third of respondents indicated that they were less likely to approve FHA-insured home-purchase loans with FICO scores of 580-620 and a 3.5% down payment. The SLOOS data suggest that lending standards are indeed easing at the higher end of the credit quality spectrum, but continue to tighten at the lower end.

The share of GSE and FHA/VA loans is likely to shrink

Jumbo mortgage originations shifted dramatically from the private sector to the GSEs and FHA/VA after the

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