Fence Requirements: Kent vs Seattle
How do fence requirements rules compare between Kent, WA and Seattle, WA?
Kent and Seattle have similar restriction levels.
Kent, WA
King County
Kent fences must stay on-property, respect sight-distance triangles at corners and driveways, and meet KCC 15.08 height limits. Posts and finished sides may face either way; no required good-side rule.
View full Kent rules →Seattle, WA
King County
In unincorporated King County, front-yard fences may be up to 4 ft tall and side and rear fences up to 6 ft. Corner lots must keep vision clearance. Critical-area buffers may restrict fencing.
View full Seattle rules →Key Facts Comparison
| Fact | Kent | Seattle |
|---|---|---|
| Sight Triangle | 30 in within 10 ft corner | - |
| Property Line | Stay on-property | - |
| Easements | May not be blocked | - |
| Good Side Rule | Not required by city | - |
| Front Yard Max | - | 4 ft |
| Side/Rear Max | - | 6 ft |
| Over 6 ft | - | Permit required |
| Vision Triangle | - | About 30 in on corners |
| Critical Areas | - | Special rules |
Highlighted rows indicate differences between cities.
Kent FAQ
How close to the property line can I build a fence in Kent?
Fences must stay entirely on your property. A surveyed line or marker confirmation is strongly recommended to avoid trespass claims.
Are fences allowed in utility easements in Kent?
Generally no. Utility and drainage easements must remain accessible. PSE or Kent Public Works may require removal if service is needed.
Seattle FAQ
How tall can I build a fence in my front yard in unincorporated King County?
Up to 4 feet in the required front-yard setback in residential zones under KCC Title 21A. Side and rear yard fences may go up to 6 feet without a permit.
Do fence rules differ on waterfront property?
Yes. Shorelines and stream buffers are regulated under KCC 21A.24 and the Shoreline Master Program. Fences may need to be open-design or set back from buffers to preserve salmon habitat.
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