Jurisdiction and research scope
Unincorporated King County, Washington only. Incorporated cities and towns, tribal lands and separately administered public lands require their own governing rules. Official Title 21A updated September 9, 2026 and Regulatory Review Committee interpretation finalized December 10, 2020, read November 6, 2026. The older interpretation is identified as administrative guidance; Planning must confirm its application to the current parcel and use.
Research by Can I Park My RV?Official municipal sources; access limits shown belowEditorial standard
King County RV parking at a glance
| Location or use | What to check |
|---|---|
| Driveway / yard | Distinguish incidental storage from principal storage on a vacant lot. Confirm parcel setbacks, access, critical areas and any shoreline or floodplain restrictions. |
| Street / loading | The private-property rule does not authorize parking or camping on a public road. No independent extended loading exception is established by these sources. |
| Sleeping / utilities | Passive recreation and guest use need their own land-use route; flood compliance is not residential permission. Quick-disconnect connections matter in covered flood areas; no service or sewage approval follows from storage alone. |
Start with the property’s actual use
The county’s finalized 2020 interpretation distinguishes temporary recreational use from storage. It describes a 60-day-in-365 route where passive recreation is the property’s primary use. It expressly does not decide every residential driveway or guest-stay situation. Obtain a current Planning determination before applying that older interpretation to a parcel.
Vacant-lot storage is not automatically accessory
The same interpretation explains that RV storage on a lot with no primary use can itself become the principal storage or parking use. Its zoning requirements then apply. Storage incidental to an established principal use is a different analysis. Neither a mailing address nor ownership of vacant land creates a right to store an RV there.
Flood and coastal conditions are additional
Current KCC 21A.24.240.N requires RVs in the zero-rise flood fringe to remain fewer than 180 consecutive days or be fully licensed and highway-ready. Highway-ready means wheels or jacks, only quick-disconnect utilities/security devices, and no permanent additions. KCC 21A.24.272.I contains the parallel alternatives for coastal VE and adjacent AE zones. These are hazard standards, not a new right to live or camp for 180 days. Land-use, shoreline, sewage and other requirements remain separate.
Who to contact for your setup
Ask King County Planning or Code Enforcement to confirm jurisdiction, the actual parcel or road, vehicle classification, position, duration and intended use. Obtain the required road, building, electrical, plumbing or wastewater approvals before relying on a parking exception. Easements, HOA rules and leases remain separate. Start with the official rule or permit guidance.
Use the King County parking checker to organize the starting conditions. The checker cannot approve a parcel, a variance or an unverified exception.
Official sources reviewed November 6, 2026
- King County Code Title 21A
Current zoning text, including RV definitions and flood-fringe/coastal-high-hazard requirements.
- King County RRC November 17, 2020 minutes
Finalized interpretation separating passive recreation, parks, storage and flood requirements; not a new ordinance.
A review date records when we checked these sources. The notes above explain any use of older code editions or limits on access to the full source; an address-specific local-government determination may still be required. Read our research method.
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