Permit Required? Not required (under 8 ft)
Typical Fee Range No permit fee Fences under 8 ft and concrete/masonry under 6 ft don't need a permit
Fee Method No fee
Apply Online Apply at Seattle Dept. of Construction & Inspections →

What's Required in Seattle

  • Fence Permits in Seattle are regulated by the Seattle Department of Construction & Inspections (SDCI)
  • Seattle is in Seismic Zone D — structural work must meet enhanced earthquake-resistance standards
  • Seattle's tree ordinance may require a tree removal permit before any excavation near trees
  • Permits are applied for online through Seattle's SDCI portal
  • Work must be performed by licensed contractors for electrical, plumbing, and mechanical
  • Check for environmental critical areas (steep slopes, wetlands) before starting any project

How Tall Can a Fence Be Without a Permit in Seattle?

In Seattle, the number that matters is 8 feet: a fence taller than that needs a permit from the Seattle Dept. of Construction & Inspections, while anything at or under it can usually go up without one. One local wrinkle: concrete or masonry fences hit the permit line earlier, at 6 feet. Even a permit-free fence still has to respect setbacks and corner sight-line rules, so check placement before you dig post holes.

Do You Need a Permit to Build a Fence in Seattle?

For a typical backyard fence at or under 8 feet, no — you can skip the building permit in Seattle. Go taller and you'll file with the Seattle Dept. of Construction & Inspections, with permit fees typically in the No permit fee range. Two cautions before you skip the paperwork: zoning rules (height caps, setbacks, corner visibility) apply to every fence, permitted or not, and HOA or deed rules stack on top of city code. When your plan sits close to the line, a quick call to the department beats rebuilding a fence later.

How to Get a Fence Permit in Seattle

1

Check Permit Requirements

Use SDCI's online resources to confirm if your project needs a permit. Fences under 8 feet and same-material roof replacements are common exemptions in Seattle.

2

Review Tree & Environmental Rules

Seattle's tree ordinance applies to trees 6+ inches in diameter. Check for critical areas (slopes, streams) on your property before applying.

3

Submit Application Online

Apply through SDCI's online portal. Upload plans, site information, and contractor details. Simple projects may use an online express permit.

4

Pay Fees & Await Review

Fees of No permit fee are valuation-based. SDCI review times vary: express permits same-day; standard residential 3–8 weeks.

5

Schedule Inspections

SDCI requires inspections at key stages. Book inspections online through the SDCI portal.

Frequently Asked Questions

Fences under 8 feet tall (or concrete/masonry under 6 feet) do not require a building permit in Seattle. Taller fences require a permit from SDCI.
Seattle fences under 8 feet do not require a permit, so there is no permit fee.
Seattle is in Seismic Zone D, one of the highest risk categories in the contiguous U.S. All structural work — decks, additions, foundations — must meet enhanced earthquake-resistance standards per the Seattle Building Code. Engineered footings are typically required for decks and structural additions.
On record in Seattle, fences over 8 feet need a permit; at or under 8 feet you generally don't need one, though zoning height caps and setbacks still apply.