Builders pulled permits for 3,446 total housing units in June, up 17 percent from May, according to statistics compiled by the Construction Industry Research Board (CIRB). Permits for single-family units totaled 2,772 units, up 20 percent from May -- the largest single-family total since July 2008. Permits for multifamily units totaled 674, up 5 percent from the previous month, according to the CIRB report. The CIRB is forecasting permits will be pulled for just 40,000 total units in 2009, the lowest total on record.