Fence Permit Seattle & Eastside Rules

If you’re searching for fence permit Seattle information—or wondering whether your new fence in Bellevue, Mercer Island, or the Eastside needs one—you’re in the right place.

This guide explains local fence height limits, design rules, and when homeowners must apply for permits under Seattle and Eastside building codes.

The answer depends on your fence’s height, materials, and location. Each city follows similar rules based on the International Residential Code, but Seattle’s version (SMC 23.44.014) is one of the most detailed. To save you time, we’ve summarized what you need to know for Seattle and the surrounding Eastside communities.

This guide uses verified information from the Seattle Department of Construction & Inspections (SDCI), Seattle Municipal Code 23.44.014, and neighboring cities’ fence regulations.

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Fence Permit Seattle: Rules and Height Limits

In most Neighborhood Residential (Single-Family) zones, here’s what Seattle allows:

• Solid fences up to 6 feet tall can be built without a permit.

• Anything above 6 feet must be “predominantly open,” meaning it allows light and air to pass through (like lattice, spaced slats, or trellis).

• The total maximum height—including posts, lattice, or decorative details—cannot exceed 8 feet.

• Solid fences taller than 6 feet are not allowed, even if you apply for a permit.

In short:
✅ Up to 6′ solid = allowed
⚠️ 6–8′ allowed only if open (like the Decorative Top style cedar fences)
❌ Over 8′ = not allowed

For official guidance, see SDCI’s Fence Page.

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Eastside Fence Permit Rules: Bellevue, Kirkland, and Beyond

• Each Eastside city enforces similar limits, but with small variations:

  • Bellevue: Allows fences up to 6 feet solid, with open designs up to 8 feet in some zones. See Bellevue Fence Guidelines.

  • Kirkland: Generally allows 6-foot solid fences and requires a permit for anything higher. Read Kirkland’s Fence Standards.

  • Redmond: Mirrors Seattle’s rule—solid fences up to 6 feet, open designs up to 8 feet, and no structures beyond that. Learn more via Redmond’s Residential Fence Code.

  • Mercer Island, Issaquah, and Sammamish: Follow nearly identical standards, often referencing the same 6-foot solid / 8-foot open rule. Always check your local city’s building department for details.

  So whether you’re in Seattle proper or anywhere across the Eastside, the key principles remain consistent:

  • Up to 6 feet solid is fine.

  • Between 6–8 feet, the upper section must be open.

  • Over 8 feet, not allowed under residential code.

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Fences on Sloped Yards and Retaining Walls

If your property slopes, Seattle and Eastside cities allow height averaging. This means you can measure every 6-foot segment of the fence along the grade and average the height to stay within limits. However, no single section can exceed 8 feet.

This rule helps maintain an even, natural-looking fence line while following code.

For reference, check SDCI Tip 312: Decks, Fences, and Arbors.

When a fence is built on top of a retaining wall, the combined height of the wall and the fence cannot exceed 8 feet, measured from the lower grade.

If you’re modifying or constructing the retaining wall itself, or if the combined structure exceeds 8 feet, a Construction Permit – Subject to Field Inspection (STFI) will be required. You can apply directly through the Seattle Services Portal or through your Eastside city’s online permit center.

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When a Fence Does Require a Permit

Most wood or metal fences 6 feet or shorter don’t require a permit in Seattle or the Eastside. However, you will need one if:

• Your fence is on or near a retaining wall or bulkhead.

• Your property includes an Environmentally Critical Area (ECA), such as a steep slope, wetland, or shoreline.

• You’re using concrete, masonry, or structural posts over 6 feet.

• You’re altering drainage or excavation conditions that could impact neighboring properties.

If you’re unsure, use Seattle’s GIS Map – Environmentally Critical Areas or contact your city’s planning department.

👉 Rain City Fence does not submit permit applications on behalf of clients. We can help you understand whether your project might require one, but it’s the homeowner’s responsibility to confirm permit requirements and obtain approval before construction.

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Property Lines and Right-of-Way

You can build a fence up to your property line, but not on it.
All fence posts, concrete footings, and rails must remain on your side.

If your fence borders public property—such as a sidewalk or alley—you’ll need approval from the Seattle Department of Transportation (SDOT) or your city’s right-of-way division (for Bellevue, Kirkland, etc.).

If you’re not certain where your property ends, a land survey is the safest step before you start construction.

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Neighbor Fences and Etiquette

If your fence runs along a shared boundary, Washington’s Good Neighbor Fence Law (RCW 16.60) encourages you to communicate with your neighbor before building.

The law allows cost-sharing when both parties benefit, but more importantly—it helps prevent disputes over height, placement, or appearance.

Whether you’re in Seattle’s tight neighborhoods or Eastside’s large residential lots, clear communication and a well-built fence go hand in hand.

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Common Fence Permit Questions

Do I need a permit for an 8-foot fence in Bellevue or Seattle?
Only if the fence includes structural or masonry components. If the top section is open and the total height stays under 8 feet, it’s usually exempt.

Can I build a 10-foot fence?
No. All jurisdictions in the Seattle metro area cap residential fences at 8 feet total.

What if my yard slopes?
You can average height along the grade, but no segment can exceed 8 feet.

Do chain link fences need a permit?
No, unless they exceed 6 feet or include structural concrete bases.

What about privacy fences?
A 6-foot solid cedar privacy fence is perfectly legal and does not require a permit.

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Quick Reference Summary

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Building a Fence in Seattle or on the Eastside? We Can Help.

At Rain City Fence, we specialize in building high-quality cedar fences across the Seattle and Eastside area, including Bellevue, Kirkland, Redmond, Mercer Island, Issaquah, and Sammamish.

Our experienced team handles everything—from site prep and property line planning to custom post-on-pipe systems, cedar privacy fences, and custom gates built to last in the Pacific Northwest climate.

We stay up to date on local fence codes so your project is compliant, attractive, and built for decades of durability. Whether you need help understanding fence permit Seattle regulations or building a compliant cedar fence, Rain City Fence can help.

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Rain City Fence Style Examples

Check out examples that align with Seattle’s code:

• Solid Cedar Fence (6 feet or less): clean, private, no permit needed
  ➤ Traditional   ➤ Modern

• Lattice-Top Cedar Panel Fence (open lattice above 6 feet): up to 8 feet tall, no permit needed
  ➤ Decorative Tops

These styles perfectly blend privacy with compliance.

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✅ Key Takeaways

1. Build up to 8 feet without a permit—but only if the top 2 feet is open lattice or trellis and no masonry/concrete over 6 feet.

2. Solid fences over 6 feet, or any fence over 8 feet, require a permit (typically STFI).

3. Fences on retaining walls are limited to 9.5 feet total.

4. Notify your neighbor before building on a shared property line; Washington law encourages cost-sharing if both benefit.

5. Always check for HOA rules, ECAs, slope averaging, or corner-lot visibility restrictions before you build.

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Ready to Design a Beautiful & Code-Compliant Fence?

Our Cedar Fences page showcases beautiful solid and lattice-topped styles that meet Seattle’s fence codes.

If you’d like to move forward, head to Get an Estimate and we’ll help you plan your fence project—Seattle, Bellevue, Mercer Island, Redmond, Kirkland, Edmonds, Shoreline and beyond.

Let us help you build a pine‑fresh cedar fence that’s stylish, compliant, and built for the PNW climate!