Seattle AADU Builder Custom AADU unit design and construction in Seattle, WA Home 9 New Construction 9 ADU 9 9002B 12th Ave SW, Seattle, WA 98106 w Ask An Expert (206) 552-9791 9002B 12th Ave Custom design and construction of a 895 sq. ft. Attached Accessory Dwelling Unit (AADU) with 3 bedrooms, 2 bathrooms and a 207 sq. ft. roof top deck. SALE PRICE: TBD ADDRESS: 9002B 12th Ave SW, Seattle, WA 98106 TYPE: ADU COMPLETION DATE: May, 2023 PHOTOS: Exterior Interior Exterior Photos Interior Photos