Home sales in the Sacramento region were stuck in an odd rut in March, traditionally the start of the spring homebuying season. Even though prices rebounded to healthy levels not seen since before last decade’s housing boom and bust, the supply of homes on the market remained anemic. Houses like this model home in Rocklin, shown in August, have become a hot commodity as the prices in the Sacramento region have returned to 2003-04 levels but the inventory of homes in March was the lowest since 2008.