The sharp rise in new home construction last year happened mostly in three suburbs that grew quickly during the boom.
Roseville, Elk Grove and Folsom accounted for 55 percent of new housing unit starts last year, even though those towns account for only 15 percent of the region's population, according to new data from the Sacramento Area Council of Governments.
Roseville led the pack with about 830 new housing unit starts, mostly single-family, detached homes in the northern and western portions of the city.
Folsom saw about 300 new housing unit starts, with the most new units at Forestwood at Folsom, an affordable housing community.
Overall, home construction in the Sacramento region increased sharply from 2011 to 2012, but remains at a fraction of the activity seen during the housing boom.
This chart breaks down the number of housing units started by area in the Sacramento region, according to SACOG housing permit data.