Tiny Homes for Sale in Washington

In Washington, a KYRAX tiny home is typically classified as follows: L&I gold-insignia "Tiny House" (a building, not vehicle-titled) if ≤400 sq ft and built to the WA State Building Code; otherwise an RV or park model RV titled through DOL. Whether it may sit on a particular lot is a local zoning question, which is why we check your exact address before you order.

The typical home value in Washington is ~US$605K. Our flagship model, the Vale, starts at $119,900 CAD, a fraction of a conventional build (US pricing confirmed at your consultation). Common uses here are Foundation ADUs and backyard units in urban growth areas, guest and rental accommodation, and park-model placements within RV or mobile-home parks.

We ship from Surrey, British Columbia: Cross-border via the Pacific Highway / Blaine crossing, then south on I-5 through the Puget Sound corridor; I-90 or US 97 eastbound for Spokane and Central WA. Estimated 1-3 days from our Surrey, BC shop to most Washington sites, depending on destination and permits; not a guaranteed schedule. Customs and oversize-load permits set the final window.

Each build is engineered to the values that govern here: frost depth: 12-24 in typical (12 in common at low-elevation lowlands; deeper at elevation and in the eastern interior); snow load: ~20-30 psf in western lowlands (about 25 psf around Puget Sound); rises with elevation to 50-100+ psf in the mountains and eastern WA; design wind: ~85-100 mph basic design (3-sec gust, ASCE 7-16, Risk Cat II) across most of the state; coastal and Olympic Peninsula higher, ~110-130 mph.

Washington builds to 2021 I-Codes (2021 IRC/IBC with Washington amendments), effective statewide March 15, 2024; permits enforced by local city and county building departments. Every KYRAX home is built to its US certification pathway: RVIA or NOAH inspection for tiny homes on wheels, ANSI A119.5 for park models, IBC/IRC for modular, with third-party certification for your destination market written into the build contract and confirmed before delivery.

Washington does not decide that at state level, and no state does: zoning, the building code and the health authority each decide part of it locally. What Washington does set is how the home is classified: L&I gold-insignia "Tiny House" (a building, not vehicle-titled) if ≤400 sq ft and built to the WA State Building Code; otherwise an RV or park model RV titled through DOL. That usually settles it, because a home treated as a vehicle is often barred as a permanent dwelling however it is powered, while a modular home on a foundation may be allowed on the same parcel. We have not verified septic or utility-connection rules for Washington; your building department and health authority can confirm them.

It depends on how it is built. A factory-built tiny house of 400 square feet or less made to the Washington State Building Code receives an L&I gold insignia and is treated as a building, not titled as a vehicle. A recreational vehicle or park model on wheels is titled and registered through the Department of Licensing like an RV, and as a residence is generally limited to a mobile-home or RV park with utilities.

Often yes for a foundation unit inside an urban growth area. HB 1337 requires cities and counties planning under the Growth Management Act to allow up to two ADUs per single-family lot, bans owner-occupancy requirements, and must allow ADUs of at least 1,000 square feet. A foundation tiny house can serve as an ADU where local code allows, but the details are set by your local jurisdiction, so confirm with your building department.