Tiny home rules in Yakima County, WA — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
A tiny home on a permanent foundation is a dwelling in unincorporated Yakima County and may use IRC Appendix Q, while a tiny home on wheels is an RV that cannot be a permanent residence in a residential zone.
Classification decides everything in Yakima County. A tiny house built on a permanent foundation is a dwelling under the 2018 IRC (WAC 51-51), which adopts Appendix Q for tiny houses 400 square feet or less — allowing reduced ceiling heights, ladder access to lofts, and smaller stair and egress geometry. It may be the primary dwelling if the lot meets the zone's standards, or an accessory dwelling unit under HB 1337 (RCW 36.70A.681). A tiny home on wheels registered as a travel trailer or park-model RV with the Department of Licensing does not meet the state building code as a permanent home and cannot be lived in full-time on a residential lot outside a licensed RV park.
Living full-time in a tiny home on wheels on a residential lot is a zoning violation subject to daily penalties. A foundation tiny home built without a permit draws a stop-work order.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Yakima County, WA
Yakima County may require hosts to carry liability insurance for short-term rental properties. Minimum coverage amounts vary by jurisdiction.
Yakima County, WA
Yakima County limits the number of guests allowed in short-term rental properties. Occupancy caps are typically based on bedroom count or square footage to p...
Yakima County, WA
Yakima County requires replacement planting when permitted trees are removed. Replacement ratios and species specifications ensure canopy preservation.
Yakima County, WA
Yakima County designates heritage or landmark trees based on size, age, or species. Removal or damage to heritage trees carries significant penalties.
Yakima County, WA
Yakima County requires permits to remove trees above a certain size on private property. Protected species and street trees have additional restrictions.
Yakima County, WA
Yakima County places few limits on residential holiday decorations. No permit is required to light up your own home. Displays should not block sidewalks or i...
See how Yakima County's tiny homes rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.