The homebuilder Lennar constructs new single-family detached houses at the Aria at West Creek development in Santa Clarita, Calif., on Thursday, March 15, 2012. (AP Photo/Damian Dovarganes)

Photo by: Damian Dovarganes

The homebuilder Lennar constructs new single-family detached houses at the Aria at West Creek development in Santa Clarita, Calif., on Thursday, March 15, 2012. (AP Photo/Damian Dovarganes)