Prefab Home Builders in Washington
37 prefab, modular, and ADU home builders serving Washington. Compare ratings, browse specialties, and reach out directly.
Browse 37 modular and prefab home builders in Washington.
Washington buyers frequently research modular homes, modular home builders in Washington, and ADU builders in Seattle, Tacoma, Spokane, and islands. This page compares verified prefab home builders with unclaimed listings by specialty and rating.
Verified builders have a confirmed profile on Prefably: licensing checked where available, photos, specialties, and Google ratings when published. You can open a full profile and contact them directly—we do not sell your inquiry as a lead. Unclaimed listings are public directory records we have not yet verified with the company. They may still be active builders, but details can be incomplete until the business claims the listing.
Builders in Washington
All states · Top builders in Washington