WA HB1443

Cities and counties planning under the Growth Management Act must allow up to two mobile dwellings (RVs, travel trailers, tiny houses with wheels) on residential lots within urban growth areas that have at least one existing housing unit

Mobile dwellings must connect to electrical service via a minimum 20-amp GFCI-protected circuit; those with internal plumbing must connect to potable water and sewer, while those without plumbing require occupant access to facilities in an existing home on the lot

Homeowners associations, condominium associations, and common interest communities cannot create restrictions that prohibit mobile dwellings as allowed under the act; these HOA provisions expire January 1, 2028

Cities with 2027 comprehensive plan deadlines must incorporate requirements during that update; all other cities must implement within two years of the effective date

The act is contingent on specific funding being provided in the omnibus appropriations act by June 30, 2025