SFR. Home 9 10213 40th Ave SW, Seattle WA 98146 7 10213 40th Ave. Custom design and construction of a two story single family residence. This unit is 1,907 sq. ft. with 3 bedrooms and 3 bathrooms. SALE PRICE: $820,000 ADDRESS: 10213 40th Ave SW, Seattle WA 98146 TYPE: SFR COMPLETION DATE: June, 2021 PHOTOS: Exterior Interior Aerial Exterior Photos. Interior Photos. Aerial Photos.