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🧱 Fence Regulations/Permit Requirements

Permit Requirements: Kent vs Seattle

How do permit requirements rules compare between Kent, WA and Seattle, WA?

Kent and Seattle have similar restriction levels.

Kent, WA

King County

Some Restrictions

Kent requires a building permit for fences over 7 feet tall or for any fence on critical area or shoreline parcels. Fences under 7 feet generally do not require a permit but must meet KCC 15.08 height limits.

View full Kent rules β†’

Seattle, WA

King County

Some Restrictions

Unincorporated King County requires a permit for fences over 6 ft tall and retaining walls over 4 ft. Fences at or under 6 ft usually need no permit but must meet setback and critical-area rules.

View full Seattle rules β†’

Key Facts Comparison

FactKentSeattle
No Permit NeededUnder 7 feet-
Permit NeededOver 7 feet or critical area-
Planning Desk(253) 856-5454-
CodeKCC 15.08 / WAC 51-50KCC Title 16 and 21A
Permit Threshold-Over 6 ft tall
Retaining Wall-Permit over 4 ft
Department-Permitting Division
Critical Areas-Extra review (Title 21A.24)

Highlighted rows indicate differences between cities.

Kent FAQ

Do I need a permit for a fence in Kent?

Only for fences over 7 feet tall or in shoreline or critical area zones. Most residential fences under 7 feet are permit-exempt but still zoning-regulated.

Who do I call about Kent fence rules?

Kent Current Planning Division at (253) 856-5454 for zoning questions and sight-triangle checks before installation.

Seattle FAQ

Do I need a permit for a 6-foot wood fence in unincorporated King County?

Generally no. Fences 6 feet or less in height typically do not require a building permit, but they must still meet zoning setbacks and any critical-area rules under KCC Title 21A.

Who issues fence permits for unincorporated King County?

The King County Department of Local Services, Permitting Division at 206-296-6600. Applications require a site plan and, for tall fences, structural details.

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