Seattle DADU Builder Construction of a DADU in Seattle, WA. Home 9 Seattle DADU 9 4432 47th Ave SW, Seattle, WA 98116 w Ask An Expert (206) 552-9791 4432 47th Ave Custom design and construction of a Detached Accessory Dwelling Unit (DADU) in Seattle, WA. SALE PRICE: TBD ADDRESS: 4432 47th Ave SW, Seattle, WA 98116 TYPE: DADU COMPLETION DATE: May, 2023 PHOTOS: Exterior Interior Aerial Exterior Photos Interior Photos Aerial Photos