Gilbert Fence, Wall and Gate Rules

Gilbert gives a homeowner more height on a side or rear property line than most of the Valley, then draws the permit line far lower than many people expect. That combination is where bad assumptions start. A fence that seems ordinary at 4 feet is not treated as permit-exempt here.

Eight feet on the property line - and a three-foot permit line

For a separation fence on a side or rear property line, Gilbert’s limit is 8 feet from finished grade on either side. That is the useful number when you are looking at a tall block wall behind a lot, not a guess based on what a nearby town allows. Gilbert Land Development Code Section 4.109 is the citation I would keep with the plan.

The catch is the building-permit exemption. The Town of Gilbert Building Department says a new fence must be less than 3 feet tall, measured from the top of the soil, to avoid a building permit. At 3 feet and above, plan on filing. Do not borrow the regional 6-foot rule. It does not answer this question in Gilbert.

I have watched a crew measure from the wrong side of a grade change and turn a simple wall into a dispute. Measure the finished grade on both sides before choosing the wall height. The Planning Commission may also modify separation-fence requirements under Section 4.109G, so an 8-foot maximum is not permission to ignore a site-specific condition.

Are you actually in Gilbert?

Start with the parcel lookup and confirm that the address is inside the Town of Gilbert, not merely using a Gilbert mailing address. County land or a neighboring jurisdiction can follow a different rule set. I would print or save the parcel result before ordering block, because the town-versus-county distinction changes the code you need to read.

The ground rules

This is a wall-first market, and paperwork still comes before the crew. Get HOA approval in writing before you file with the town; an issued permit does not settle a private HOA requirement. Call Arizona 811 at least two full working days before digging.

If the wall needs engineering, use the county engineer-seal principle: the design work needs the appropriate Arizona-licensed professional’s seal. That issue is separate from whether a short fence has a permit exemption. I learned that distinction after a footing call of mine did not hold through monsoon conditions. A permit question is not a design question.

Heights and permits

Use this as the first pass, then re-pull the current code text from Municode before filing. I would not quote a fee here because the town schedule does not provide a confirmed dollar figure in the materials for this page.

Item	Gilbert rule	What to do
Side or rear separation fence	Up to 8 feet from finished grade on either side. Gilbert LDC Section 4.109.	Check both grades and any Planning Commission modification.
New fence permit exemption	Less than 3 feet from the top of the soil. Town of Gilbert Building Department.	File at 3 feet and above.
Retaining wall exemption	Less than 4 feet from bottom of footing to top, with no surcharge load. Town of Gilbert Building Department.	Confirm the footing measurement and load condition.
Materials	Barbed wire, razor wire, electric fences, chain link, woven wire, and similar materials have code limits. Gilbert Municipal Code Section 42-110.	Read the material rule before selecting a fence.
Pool barrier	Town rules add to the state minimum.	Use the pool-barrier guide.
Engineering	Site conditions can call for a sealed design.	Verify the ROC classification and design requirement.

The 4-foot retaining-wall exemption has two conditions people skip: the height runs from the bottom of the footing to the top, and the wall cannot carry a surcharge load. A wall that looks low from the patio may not qualify once you measure its footing. For the filing steps themselves, use the Gilbert fence permit process.

Materials the town will not accept

Gilbert is unusually plain about this. Municipal Code Section 42-110 prohibits barbed wire, razor wire, and electric fences, subject to the code’s own exception clause. Read that clause before deciding it applies to your property; a vague claim that someone else uses the material is not an exception.

Chain link, woven wire, and similar fencing are also prohibited except at temporary construction sites and recreation facilities under the same section. For a residential selection, treat that as a stop sign, not a suggestion to find a different mesh. The town’s code singles out chain link fencing in a way many Valley homeowners do not anticipate.

Material choice should come before the quote. On bids I wrote, the expensive mistake was often not the wall itself. It was choosing a material, taking a deposit, then finding out the material could not stay in the plan.

Pools

Gilbert adds requirements on top of Arizona’s state pool-barrier minimum. That is the headline only. Check the pool-barrier guide before treating any fence or gate as a compliant pool barrier.

Before you build in Gilbert

Work through this list before you call for bids:

• Confirm the address through the parcel lookup.
• Check the planned height against the 8-foot property-line rule and the 3-foot permit line.
• Check Municipal Code Section 42-110 before choosing the material.
• Obtain HOA approval in writing.
• File with the town if the new fence is 3 feet or taller.
• Contact Arizona 811 at least two full working days before digging.
• Verify the contractor’s ROC classification and whether the design needs an engineer’s seal.

For context before comparing locations, see wall and fence rules by city. Gilbert’s height allowance differs from Chandler’s seven-foot limit and clearance requirement and Queen Creek’s permit approach.

Frequently asked questions

How tall can my fence be in Gilbert?

Up to 8 feet is allowed for a separation fence on a side or rear property line, measured from finished grade on either side. Gilbert Land Development Code Section 4.109 is the controlling citation for that rule. Check for any Planning Commission modification before treating the maximum as automatic.

Do I need a permit for a low fence?

No, a new fence under 3 feet measured from the top of the soil does not need a building permit. At 3 feet and above, file with the Town of Gilbert. Confirm the current application requirements before you submit.

Is chain link allowed?

Not for ordinary residential use. Gilbert Municipal Code Section 42-110 permits chain link, woven wire, and similar fencing only at temporary construction sites and recreation facilities. Choose the material before you commit to a bid.

Is barbed wire ever legal here?

It is prohibited, subject to the code’s own exception clause. Read that clause before assuming it covers your property or use. The same code section also prohibits razor wire and electric fences.

Does the town add to the state pool rule?

Yes, the town adds requirements beyond the state pool-barrier minimum. Review the Gilbert pool-barrier requirements for the details rather than relying on this height page.

Check the material list before you choose a fence, not after.

Sources

• Gilbert Land Development Code, Section 4.109 and Section 4.109G - separation-fence height and modification authority.
• Gilbert Municipal Code, Section 42-110 - prohibited fence materials and listed exceptions.
• Town of Gilbert Building Department - new-fence and retaining-wall permit exemptions.

Last reviewed 2026-07-29. Recheck Gilbert Land Development Code Section 4.109 and Municipal Code Section 42-110 in Municode before building or filing; supplements can change the text.

This page is a planning guide, not legal, engineering, or permit advice. Verify the current Gilbert code, parcel jurisdiction, HOA rules, permit requirements, and site-specific design requirements before construction.

Reviewed by Alma Reyes, ICC-certified residential building inspector.