Fence Requirements: Kirkland vs Seattle
How do fence requirements rules compare between Kirkland, WA and Seattle, WA?
Kirkland and Seattle have similar restriction levels.
Kirkland, WA
King County
Kirkland fences must meet KZC 115.40 height limits, sight triangles, and setbacks. Fences 6 feet or shorter need no permit, but shoreline and critical-area buffers require extra review.
View full Kirkland 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 | Kirkland | Seattle |
|---|---|---|
| Typical Height | 6 ft most locations | - |
| Permit Trigger | Over 6 ft | - |
| Banned Materials | Barbed and electric | - |
| Code | KZC 115.40 | - |
| 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.
Kirkland FAQ
What are Kirkland basic fence requirements?
Keep residential fences at 6 feet or less, stay outside sight-distance triangles, avoid electric or barbed wire, and check shoreline and critical-area overlays if you are near water or a steep slope.
Does the fence finished side need to face my neighbor?
Kirkland code does not strictly require the finished side to face outward, but it is the customary neighborly practice and many HOAs require it.
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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