<p>In this Sunday photo, new single-family detached homes are being built by Lennar at the "Aria at West Creek" development in Santa Clarita, Calif. U.S. builders started work on fewer homes in March 2012 after they sharply cut back on apartment construction. But builders requested the most permits for future projects in 3 1Ú2 years, suggesting many see the housing market improving over the next year.</p>

April 18, 2012