They're often described as tickets to homeownership for people with damaged credit.
But subprime mortgages also are reshaping entire neighborhoods. In subdivisions from Rialto to Sacramento, half or more of all home-purchase mortgages in 2005 were subprime.
That means the implosion of the subprime market could hurt not only borrowers, who may lose their homes, but neighbors whose home values could be reduced by a wave of forced sales or foreclosures nearby.
Subprime mortgages usually cost two to three percentage points more than conventional loans. Monthly payments typically rise sharply after two years, forcing most borrowers to refinance.
But because of the collapse of the subprime industry, many borrowers may be unable to refinance when their payments go up.
The Orange County Register analyzed all 920,000 home purchase mortgages made in California in 2005, the last year for which complete data is available. The analysis showed a strong geographic pattern to subprime loans:
Buyers in fast-growing areas such as the Inland Empire and in lower-middle-class neighborhoods like Santa Ana were far more likely to sign subprime mortgages than buyers elsewhere.
"Subprime lending does not happen equally throughout the state," said Paul Leonard, California director of the Center for Responsible Lending, a nonprofit advocacy group. "There are concentrations, both at the county level and the neighborhood level."
He added that racial minorities are "likely to suffer more when housing prices drop and foreclosures begin."
The Register was unable to determine if minority borrowers were disproportionately prone to get subprime mortgages. The newspaper used a database compiled under the federal Home Mortgage Disclosure Act. One of every five borrowers in the database did not list his or her race, making it difficult to draw firm conclusions about race and subprime lending.
The analysis also found:
- The subprime market share varied widely among counties, from 8 percent in San Francisco to 40 percent in San Bernardino. In Orange County, 21 percent of home-purchase loan volume was subprime.
- Subprime commanded most of the market in relatively poor cities such as Compton, Lynwood and Rialto. In wealthy cities like Beverly Hills, Saratoga, Newport Beach and Laguna Beach, subprime accounted for less than 5 percent of the home-purchase market.
- Subprime dominated the bottom of the market, accounting for 61 percent of all home-purchase loans under $100,000 and 51 percent of loans under $200,000. Subprime lenders grabbed just 11 percent of the business in the over-$500,000 loan market.