Do You Need a Fence Permit in Lewis or Thurston County? Quick Answer
If you’re planning a new fence in this part of southwest Washington, the short answer is that most residential fences don’t need a permit at all. Where that changes depends on your fence’s height and where your property sits. Thurston County allows fences up to 8 feet without a permit. Lewis County’s general threshold is 7 feet. In Chehalis, the answer depends on whether your fence falls inside or outside the street setback area along the front of your lot.
That said, “no permit required” isn’t the same as “no rules apply.” Setbacks, corner-lot sight triangles, and other placement rules still apply even to fences shorter than the exempt height. Before you dig a single post hole, it’s worth a quick call to confirm the rules for your specific parcel.
Who to call:
- Lewis County Community Development: (360) 740-1146
- City of Chehalis Building Department: (360) 345-2229
- PNW Fence & Gate (for the install itself): (360) 996-4250
Fence Permit Rules by Jurisdiction
These figures are pulled directly from each jurisdiction’s own current permitting documents.
Lewis County (Unincorporated Areas)
In unincorporated areas of the county, the current (2024) Building Permit Handout sets the general fence-height exemption at 7 feet. Build at or under that height, and in most residential zones, you won’t need a permit.
Corner lots are the big exception. Within 25 feet of a corner, the county code caps fence height at 4 feet to preserve the vision-clearance triangle so drivers and pedestrians can see cross traffic. That 4-foot cap applies regardless of the general 7-foot exemption.
One more thing worth flagging, honestly: an older, narrower provision from a 2011 planning-commission draft references a 6-foot threshold, but that language applies only to a discretionary administrative-exception process in non-residential zones, not a blanket residential rule. Its current codification status isn’t fully confirmed, so if your parcel is anywhere near that gray area, call the county to confirm for your specific zone.
Contact: Lewis County’s Building Permit Handout | Lewis County Community Development, 125 NW Chehalis Ave, Chehalis, WA 98532, (360) 740-1146
Thurston County (Unincorporated Areas)
Unincorporated areas here carry an 8-foot fence exemption, the highest of the three jurisdictions covered in this piece. Height isn’t the only factor, though. Setbacks and sight-distance triangles at intersections still apply, no matter how tall or short your fence is, so a fence under 8 feet can still run into placement problems.
Barbed wire and razor fencing don’t require a permit either, but they’re disallowed outright in some residential zones, so check before installing anything with an edge. For full details, see the county’s permit requirement page.
City of Chehalis (Interior Lots)
The city handles fence permitting separately from the county, and the rules vary depending on where the fence is located on the lot.
On an interior lot, outside the street setback area, the city’s guidance allows fences up to 7 feet. It runs its own 2021 IBC code cycle under Chehalis Municipal Code 17.10.010, rather than defaulting to county code.
Here’s what the city’s published guidance says on height, but treat it as a starting point rather than the final word, and confirm directly with the city’s building department before you build. You can also browse our local fence services page to see what we install in the area.
City of Chehalis (Corner Lots and Street Setbacks)
Inside a street setback area, the rules tighten further, according to the city’s published guidance. That guidance puts the height cap at 42 inches for fences more than 50 percent opaque, or 48 inches for fences 50 percent or less opaque, meaning more open designs like split-rail or picket get a little more height to work with than solid privacy panels.
The same guidance states that barbed wire, broken glass, and electrified fencing aren’t allowed anywhere in the city, regardless of setback location. As noted above, confirm the specifics with the building department before you build. For current permit requirements and applications, contact the city’s building department at (360) 345-2229 or check its permit portal. If you’re budgeting for a project within city limits, our fence installation cost guide breaks down the factors that affect pricing.
Pool Fencing Rules
If your fence project includes a pool barrier, state law adds its own layer of requirements on top of local height and setback rules. Washington’s pool barrier gate rule (WAC 246-260-031) requires pool barrier gates to be self-closing and self-latching, with the latch positioned at least 60 inches high or otherwise shielded.
You’ll also see commonly cited numbers such as a 48-inch minimum barrier height, 4-inch maximum gap, and 1.25-inch maximum mesh opening. Those figures come from federal pool barrier safety guidelines published by the CPSC. Treat them as a solid federal and state baseline rather than a confirmed local requirement, and verify with your jurisdiction before finalizing a pool fence design.
What Happens If You Skip the Permit
Skipping a required permit doesn’t usually cause problems on day one, but it tends to catch up with homeowners eventually, often at the worst possible time.
The most immediate risk is a stop-work order. If your county or city becomes aware of unpermitted fence work in progress, whether from a neighbor complaint, a routine inspection, or a follow-up tied to an unrelated permit, they can halt construction until the issue is resolved.
After the fact, the fix usually means bringing the fence into compliance: modifying the height, moving it off a setback line, or, in some cases, removing it entirely and starting over. That’s a far more expensive redo than getting it right the first time.
The complications that surprise most people tend to show up later, at resale or refinance. Title companies and buyers’ inspectors routinely check for unpermitted structures, and an undocumented fence, especially one that encroaches on a setback or an easement, can slow down or derail a closing. It’s a headache that’s entirely avoidable with one phone call before construction starts to whichever jurisdiction has authority over your parcel.
Situational Factors That Can Change the Rules
These factors can matter even when your fence sits comfortably under the exempt height.
HOA Restrictions
Plenty of neighborhoods in Lewis and Thurston County carry homeowners’ association covenants that are stricter than anything the county or city requires. An HOA might cap fence height at a level below the jurisdictional exemption, restrict materials or colors, or require design approval before installation. Meeting your local permit exemption doesn’t override an HOA covenant, and vice versa. If you’re in a covenanted community, check both sets of rules, the jurisdiction’s and the HOA’s, before committing to a design.
Rural Parcels, Wetlands, and Critical Areas
Rural properties here often carry environmental overlays that a straightforward in-town lot doesn’t have to think about. Wetlands, steep slopes, and stream buffers can all trigger a review, even for a fence that’s well under the exempt height, if the fence line crosses or sits near a designated critical area.
On the construction side, our Pacific Northwest weather adds a practical wrinkle regardless of permitting: heavy seasonal rain and periodic frost affect how deep post holes need to go and which footing approach holds up over time, especially on rural acreage with softer or wetter soil. If you’re fencing farmland, pasture, or a larger rural parcel, our rural and farm fence installation page covers what we typically see in these conditions.
Property Lines and Easements
A fence has to stay entirely within your property line, no matter how tall or short it is or which jurisdiction you’re in. That means confirming your actual boundary, not just an assumed fence line, before you build, since encroaching on a neighbor’s property can force a rebuild later. Fences also can’t block a right-of-way or an access easement, even one that’s rarely used, since those legal access rights typically survive regardless of how long a fence has been sitting on top of them.
How PNW Fence & Gate Can Help Before You Build
Permit research can feel like its own project on top of choosing a fence style and budget. Here’s where PNW Fence & Gate fits in: during your free on-site estimate, we’ll flag the kinds of things that commonly lead to problems from the county or city, corner lots, pool areas, wetland-adjacent parcels, HOA neighborhoods, so you know what questions to bring to whichever office handles your permit.
To be clear about what that does and doesn’t mean: we don’t pull permits or call the county on your behalf. That call is yours to make, but we can help you walk into it informed instead of guessing.
Beyond permitting, our fence installation services cover cedar, vinyl, chain link, aluminum, and steel privacy fencing, plus custom fence gate installation for automated and manual gates. Curious what a project might run? Our fence installation cost guide is a good starting point, and you can see our full service area to confirm we cover your part of Lewis or Thurston County. Request a free on-site estimate or call (360) 996-4250 to get started.
Frequently Asked Questions
What is the maximum fence height without a permit in Lewis County?
In unincorporated areas of the county, the general exemption allows fences up to 7 feet without a permit. That drops to 4 feet within 25 feet of a corner lot, to preserve sight lines for drivers and pedestrians. An older provision tied to a discretionary process in non-residential zones isn’t a blanket residential rule, so if your parcel is near that edge case, call the county’s Community Development office at (360) 740-1146.
Do I need a permit for a fence in Thurston County?
Not usually, as long as your fence is 8 feet or shorter. That exemption doesn’t erase setback requirements or corner sight-distance rules, so confirm placement even for a shorter fence. Barbed wire and razor fencing skip the permit too, but some residential zones don’t allow them at all, so check first.
What are Chehalis’s rules for a corner lot fence?
Inside a street setback area, the city’s guidance puts the height cap at 42 inches for fences more than 50 percent opaque, or 48 inches for fences 50 percent or less opaque. Outside the setback, that same guidance allows up to 7 feet. It also states that barbed wire, broken glass, and electrified fencing aren’t allowed citywide. These figures come from secondary sources rather than a confirmed primary text, so confirm details with the city’s building department at (360) 345-2229 before you build.
How much does a fence permit cost, and how long does it take?
There’s no single answer. Permit fees and processing timelines vary by jurisdiction, zone, and project scope, and none of the offices covered here publish a flat number. Rather than guess, call the office handling your permit directly, (360) 740-1146 for the county or (360) 345-2229 for the city, and ask about your specific parcel and project.
Can I build a fence near a wetland or stream in rural Lewis or Thurston County?
Possibly, but wetlands, steep slopes, and stream buffers can trigger additional review even for a fence well under the standard height exemption. Rural parcels in both counties are more likely to carry these critical-area overlays than a typical in-town lot. Before finalizing a fence line near water or a slope, check with the county’s community development office for your parcel’s specific designations.
Does PNW Fence & Gate pull my permit for me?
No. We flag likely permit triggers, corner lots, pools, wetlands, HOA restrictions, during your free on-site estimate so you know what to ask, but pulling the permit or contacting the county is on the homeowner. We’re happy to talk through what we’re seeing on your property; the actual filing is a call you’ll need to make yourself.
What if my HOA rules are stricter than the county’s?
Follow the stricter of the two. An HOA covenant can limit height, materials, or design below what your county or city otherwise allows, and meeting the jurisdiction’s exemption doesn’t override that covenant. Check your HOA’s rules alongside local permit requirements before finalizing a design.