Builders FirstSource is the nation's largest building materials supplier. Our Bainbridge Island WA Lumber Yard proudly serves builders, contractors & remodelers in Bainbridge Is. and surrounding Puget Sound Area with their building supply & construction needs. This facility offers the following building supplies & services: Lumber and Building Materials, Windows, Design Center & Showroom, Business Center, Pro Retail Store, Customer Pick Up | Will Call, Mill Shop. Visit us today to discover why we are known as builders' first choice!