Northern Virginia zip codes with the highest home price increases in 2026 include Rosslyn (22209) with a 56% rise, driven by condo sales and cash buyers. Alexandria (22307) saw a 44% increase, mainly from detached homes. Vienna (22180) experienced a 20% rise, with homes selling above asking price. McLean (22101) had a 17% increase, and Ashton Heights/Clarendon (22201) saw a 16% rise with the most sales.