Tiny home land in King County, WA
What King County records say about the land, and what you'll need to check with the county yourself.
Zoning codes you'll see
| Code | Looks like | Share of lots |
|---|---|---|
| SF-5000 | Residential | 14% |
| LR-3 | Residential | 7% |
| RS | Residential | 7% |
| NR-2 | Zone type unclear | 6% |
| R-4 | Residential | 6% |
| R-6 | Residential | 4% |
| RA-5 | Rural | 4% |
| NC2 | Commercial | 4% |
The zone type is our best guess from the code. Codes mean different things in different counties, so ask county planning what a code allows for your build type.
The land
Land area2,116 sq mi
Typical lot size0.18 acres
Lots 1 acre or larger6%
Lots outside the 100-year floodplain96%
Based on a sample of 100 lots from county records. Typical lot size is the median.
Ask county planning before you buy
- Is a tiny home on wheels (THOW) allowed as a full-time dwelling, or only as an RV for limited stays?
- What is the minimum dwelling size in this zone?
- Has the county adopted Appendix Q of the IRC for tiny houses?
- What does a septic permit need here: perc test, minimum lot size, setbacks?
- Does a well need a permit, and is there a minimum lot size for one?
- Does the lot have legal road access, and who maintains the road?
Get answers in writing when you can. Rules change, and a phone answer won't help you at a permit hearing.
This page summarizes county records and is not legal advice. Zoning is never a guarantee. Verify with King County planning before you buy.