Spring homebuying season (and the accompanying federal tax credit) have come and gone. According to data from ZipRealty, the outer Virginia suburbs were where the action was the second quarter. For example, in the “hottest” ZIP, 20109 in Manassas, buyers were willing to pay 1.61 percent above the list price. The second hottest market was also in Manassas, and two of the top 10 were in Sterling.