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