Seattle DADU & ADU Construction Construction of a DADU with an ADU unit in Seattle, WA. Home 9 New Construction 9 Single Family Homes 9 4724 37th Ave SW, Seattle, WA 98126 w Ask An Expert (206) 552-9791 4430 47th Ave SALE PRICE: TBD ADDRESS: 4724 37th Ave SW, Seattle, WA 98126 TYPE: TBD COMPLETION DATE: Currently in Progress