The 3,470-square-foot house, which was built in 1989, is in Westchester Heights.
Plavsic has worked as a machinist at the Everett assembly plant of Boeing Aeronautics.
Mr. Schoen has been a manager for airport technology at Boeing.
There were 139 sales in Unincorporated Redmond in 2008, with a median sales price of $550,000.
Address: 21524 Northeast 101st Street
Buyer(s): Li Xu and Danijel B Plavsic
Seller(s): Marc L Schoen and Deanna M Schoen
Sale date: Mar. 17, 2008