Fence Requirements: Federal Way vs Seattle
How do fence requirements rules compare between Federal Way, WA and Seattle, WA?
Federal Way and Seattle have similar restriction levels.
Federal Way, WA
King County
Federal Way fences must meet zoning standards for height, setback, and sight triangles under FWRC 19.125. Front yard 4 ft, rear/side 6 ft. Barbed wire is restricted in residential zones.
View full Federal Way 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 | Federal Way | Seattle |
|---|---|---|
| Front Yard | 4 feet max | - |
| Rear/Side | 6 feet max | - |
| Sight Triangle | 3 ft limit | - |
| Barbed Wire | Prohibited residential | - |
| 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.
Federal Way FAQ
Is barbed wire allowed in Federal Way?
No, barbed wire is prohibited in residential zones and restricted in commercial zones. Industrial zones may allow it atop 6-foot fences with permit.
Can I install an electric fence in Federal Way?
Electric fences are prohibited in residential zones. Agricultural and rural zones may allow them with specific safety requirements.
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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