(RECAP: The thousands of people seeking affordable housing in Northern Virginia got a bit of good news Saturday when two local governments approved plans for projects that will add more than 200 moderately priced apartments to the region. The Arlington County Board agreed to lend AHC, a housing nonprofit group, $16.5 million to help it buy the Serrano Apartments, a 285-unit complex on the west end of Columbia Pike. Two-thirds of the apartments, about 196, will be made affordable to people who earn less than the region’s median income.)