Finds that: (1) Tiny houses have become a trend across the nation to address the shortage of affordable housing; and

(2) It is important to create space in the revised code of Washington for the regulation of tiny house siting as tiny houses are becoming more acceptable.

Allows individual cities and counties to permit tiny houses with wheels to be collected together as tiny house villages using the binding site plan method articulated in chapter 58.17 RCW (plats--subdivisions--dedications).

Prohibits a city or town from adopting an ordinance that prevents the entry or requires the removal of a tiny house with wheels used as a primary residence in manufactured/mobile home communities.