Fence laws in Oak Park, Illinois
What the Oak Park municipal code says about fences, one topic at a time, with the section number and a link to the document behind every line. Where Oak Park sets no rule of its own, the Illinois rule is shown in its place and marked as such.
Fence laws in Oak Park, Illinois, question by question
The short version
- Who pays on the line
- Oak Park does something almost nothing else in this state does and lets the neighbor decide. The figure is 7 feet, for height allowed once the neighbor consents in writing.
- How tall
- Oak Park measures from lot lines rather than naming yards, and thirty five feet from the front lot line is the line the whole scheme turns on, and the answer turns on how far the fence stands from each lot line, and whether the use is residential. The figure is 5 feet, for fence near the front lot line.
- Permits
- A permit is required for fencing in Oak Park, applied for online, with one exception: repairing or replacing existing fencing in a single or cumulative area not exceeding 100 square feet. The figure is 100 feet, for square feet of repair allowed without a permit.
- Pool barriers
- Oak Park sets no statewide pool barrier rule. The chapters that were read are listed below. Cities and counties decide this one.
- Spite fences
- Oak Park has no spite fence statute. The chapters that were read are listed below. Cities and counties decide this one.
- Measured from what
- Oak Park settles in one sentence the argument most codes leave open, and says the height of a fence includes all gates and appurtenances.
- Corner lots
- On a corner lot Oak Park measures thirty five feet from the point where the two street lines intersect, and inside that distance, or closer to the intersection than the existing building if that is less, a fence has to be open and stops at five feet. The figure is 35 feet, for distance from the corner the open fence rule reaches.
- Retaining walls
- Oak Park leaves retaining walls to the municipal or county residential building code, or the International Residential Code named in the construction contract. It reaches newly built homes only.
- Materials
- Oak Park defines open and solid rather than leaving them to argument, and then decides two borderline cases in the definition itself, and the answer turns on the material and where on the lot the fence stands. The figure is 50 percent, for openness that makes a fence open.
- Livestock
- Illinois calls a fence legal at four and a half feet tall and in good repair. The figure is 4.5 feet, for height of a legal fence.
Who owns the fence between two properties in Oak Park?
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Oak Park answers this in its own law. The words that do it are quoted below.
Oak Park does something almost nothing else in this state does and lets the neighbor decide. A fence more than thirty five feet from the front lot line, or behind the front of the existing building, and standing within ten feet of an interior side lot line, stops at six feet. If a letter of consent from the owner of record of the adjacent property is filed with the Zoning Administrator, the same fence may go to seven. The consent is filed with the village rather than exchanged privately, so the record sits with the permit. The rest of the scheme is measured the same way, by distance from a line rather than by yard: fifteen feet from a corner side line, ten feet from an interior side line, ten feet from a rear line, each with its own ceiling.
However, if a letter of consent by the owner of record of the adjacent property is filed with the Zoning Administrator, a fence may be erected to seven feet in height.
Fences for Residential Uses and H District, item d
7 ftheight allowed once the neighbor consents in writing
Also on fences on the property line in Oak Park
- set in state lawIllinois makes both neighbors pay for a fence on the line between them, each one a fair share. Most of the section is about hedge fences. A hedge has to be cut back to four feet in the year after it turns seven, then trimmed to five feet at least every two years. An owner who has done the trimming can give the neighbor ten days written notice, do the work, and sue for the cost. Town officers called fence viewers settle the fights. 765 ILCS 130/3Illinois · Statute
How tall can a fence be in Oak Park?
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Oak Park answers this, but the answer changes depending on how far the fence stands from each lot line, and whether the use is residential.
Oak Park measures from lot lines rather than naming yards, and thirty five feet from the front lot line is the line the whole scheme turns on. Inside that distance, or closer to the front than the existing building if that is less, a residential fence has to be open and stops at five feet. Beyond it, or behind the front of the building, a fence within fifteen feet of a corner side line or ten feet of an interior side line reaches six, and one within ten feet of the rear line and parallel to it reaches eight. Non-residential land takes the same five feet in front, except that open wire, wrought iron, steel and aluminum go to eight there, and eight feet everywhere beyond thirty five feet. A townhouse development may run eight feet along its front lot line with no open fence requirement where the fence separates a street from a private yard, and seven feet between individual townhouse yards.
For interior lots, fences located within 35 feet of a front lot line or closer to the front lot line than the existing building, whichever is less, must be open fences and cannot exceed five feet in height.
Fences for Residential Uses and H District, and Fences for Non-Residential Uses
The answer turns on how far the fence stands from each lot line, and whether the use is residential.
- within thirty five feet of a front lot line
- Five feet, and it has to be an open fence. 5 ft
- within fifteen feet of a corner side line, or ten feet of an interior side line
- Six feet. 6 ft
- within ten feet of a rear lot line and parallel to it
- Eight feet. 8 ft
- a non-residential use more than thirty five feet from the front lot line
- Eight feet. 8 ft
Also on fence height in Oak Park
- no rule, documents checkedIllinois sets no limit on how tall a fence at a house can be. The Fence Act names four and a half feet, but that is a floor for a farm fence that holds animals, and the same section lets a town meeting or the county board pick a different number. The state housing law sets no height either. A yard fence height comes from city zoning. 765 ILCS 130/2Illinois · Statute
Do I need a permit for a fence in Oak Park?
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Oak Park answers this in its own law. The words that do it are quoted below.
A permit is required for fencing in Oak Park, applied for online, with one exception: repairing or replacing existing fencing in a single or cumulative area not exceeding 100 square feet. The cumulative wording matters, because it stops a fence being replaced a panel at a time to stay under the threshold. The application carries more than a drawing. The contractor has to be registered with the village and a copy of their written proposal or contract goes in with the application, and a plat map showing where the fencing will be installed or replaced is required. For a structure inside a historic district, product information or samples may have to go to the village Historic Preservationist for review. Inspections may be requested by the owner or the contractor but are not required.
Contractors must be registered with the Village of Oak Park. A copy of their written proposal or contract must be submitted with the Application for Permit.
Fence Guidelines, permit requirements
100 ftsquare feet of repair allowed without a permit
Also on permits in Oak Park
- set in state lawIllinois has no one statewide permit rule for work at a house. Where a town or county has no building code of its own, the Residential Building Code Act makes the builder and the buyer name a code in the building contract, and the International Residential Code applies when they name none. A separate law, in force since January 1, 2025, also requires a city or county code to be at least as strict as a recent model code on how a building is built to hold weight. Illinois Residential Building Code Act, Sec. 15Illinois · Statute
Pool fence requirements in Oak Park
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Oak Park law has no rule about this. The chapters that were read are listed below. Cities and counties decide it instead.
Illinois writes no fence rule for a pool at a private home. The Swimming Pool Safety Act covers pools built for public swimming, and it says plainly that a pool at a private home used by the owner and guests is left out. The state Swimming Facility Code leaves the same pools out. What a home pool needs comes from the city or county and from whatever building code that place has adopted.
This one is Illinois law, not Oak Park law. All Illinois findings
Documents read before writing that:
- 210 ILCS 130/1Illinois General Assembly
- 77 Ill. Adm. Code 820Illinois General Assembly, Joint Committee on Administrative Rules
Spite fence laws in Oak Park
Compare spite fences across all 50 states
Oak Park law has no rule about this. The chapters that were read are listed below. Cities and counties decide it instead.
Illinois has no spite fence law. The Fence Act covers who pays, what counts as a legal fence, and how hedges get trimmed. Nothing in it turns on why a fence was built. A fence put up to annoy a neighbor is fought in Illinois as a nuisance case in court, or under a city rule.
This one is Illinois law, not Oak Park law. All Illinois findings
Documents read before writing that:
- 765 ILCS 130/3Illinois General Assembly
- 765 ILCS 130/2Illinois General Assembly
How fence height is measured in Oak Park
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Oak Park answers this in its own law. The words that do it are quoted below.
Oak Park settles in one sentence the argument most codes leave open, and says the height of a fence includes all gates and appurtenances. So a gate arch, a post cap, a lamp or a trellis sitting on the top rail counts toward the figure rather than standing above it, and the tallest point of the assembly is what is measured. The village does not state a ground datum for that measurement in the fence rules, and it does not address a difference in grade between two lots or a fence built on a retaining wall. The posts themselves carry a standing requirement rather than a dimension: they must be set and maintained vertically, and the whole fence kept in a non-deteriorated and rust free condition.
The height of a fence includes all gates and appurtenances.
General Requirements for All Fences, items a and d
Also on how height is measured in Oak Park
- left to the townIllinois never says where a fence height is measured from. The Illinois Municipal Code lets a city set the height and size of buildings, in one short line, and stops there. The Fence Act calls four and a half feet a legal fence and says nothing about the surface those feet start at. So the number and the way to measure it both come from the city. 65 ILCS 5/11-13-1Illinois · Zoning code
Fence rules for corner lots in Oak Park
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Oak Park answers this in its own law. The words that do it are quoted below.
On a corner lot Oak Park measures thirty five feet from the point where the two street lines intersect, and inside that distance, or closer to the intersection than the existing building if that is less, a fence has to be open and stops at five feet. Then it goes further than any other code in this state and specifies the boards. Each one may be no more than five inches wide and no more than three quarters of an inch thick, has to be installed vertically to form a flat surface at least fifty percent open, and has to leave no less than three and a half inches of open space between it and the next board. Separately the zoning ordinance requires that no structure, including a closed fence or wall, and no planting may violate the required sight triangle, and it measures that triangle by the Village Code rather than by the zoning text.
In addition, when boards are used as the surface material for such fences, the boards cannot exceed five inches in width and three-quarters of an inch in thickness, and must be installed vertically to form a flat and at least 50% open surface with no less than three and one-half inches of fence open space between each board.
Fences for Residential Uses and H District, item b
35 ftdistance from the corner the open fence rule reaches
Also on corner visibility in Oak Park
- set in state lawIllinois treats this as blocking the road. Under the Illinois Highway Code it is a petty offense to block a public highway, and running a fence onto one counts, unless the highway authority in charge gave permission. The fine runs from fifty to five hundred dollars, and more for each day the blockage stays after an order to take it out. That rule covers the road strip. A clear view triangle on private ground comes from city zoning. 605 ILCS 5/9-117Illinois · Traffic code
Retaining wall rules in Oak Park
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Oak Park does not set this. It leaves it to the municipal or county residential building code, or the International Residential Code named in the construction contract.
Illinois has no statewide building code for homes, so no state law sets a height at which a wall that holds back dirt needs a permit. Where a town or county has its own building code, that code answers it. Where there is none, the Residential Building Code Act makes the builder and the buyer name a code in the building contract, and the current International Residential Code becomes part of that contract when they name none.
This one is Illinois law, not Oak Park law. All Illinois findings
The home builder and the home purchaser may agree to adopt the International Residential Code or any municipal residential building code or county residential building code that is in effect on the first day of construction in any county or municipality that is within 100 miles of the location of the new home.
The code hands this to the municipal or county residential building code, or the International Residential Code named in the construction contract, which is not published in the code itself.
Fence materials allowed in Oak Park
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Oak Park answers this, but the answer changes depending on the material and where on the lot the fence stands.
Oak Park defines open and solid rather than leaving them to argument, and then decides two borderline cases in the definition itself. An open fence has fifty percent or more of its whole surface in regularly distributed openings. A solid fence has no distributed openings at all, a shadowbox design counts as solid even though light passes through it at an angle, and a chain link fence with slats does not count as solid. Chain link and open wire fencing are prohibited in the front yard and in any part of a corner side yard forward of the front building line, and where open wire is used elsewhere a black or brown vinyl coating is preferred. Barbed wire is prohibited, electrically charged fencing of any kind is prohibited, and no spike, nail or pointed instrument may be installed on any railing, fence, guard or other barrier.
Fence - Solid. A fence that has, over its entirety, no distributed openings. A shadowbox design fence is considered a solid fence. A chain link fence with slats is not considered a solid fence.
The answer turns on the material and where on the lot the fence stands.
- an open fence
- Fifty percent or more of the surface in regularly distributed openings. 50%
- chain link or open wire in a front or forward corner side yard
- Prohibited.
- barbed wire, electric fencing, spikes or pointed instruments
- Prohibited anywhere.
Also on materials in Oak Park
- set in state lawIllinois lists what a legal fence can be made of: rails, boards, stone, hedge, barbed wire, woven wire, or anything the town fence viewers judge just as good. The fence has to stand four and a half feet tall and be in good repair. 765 ILCS 130/2Illinois · Statute
Livestock and boundary fence law in Oak Park
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Illinois answers this in its own law. The words that do it are quoted below.
Illinois calls a fence legal at four and a half feet tall and in good repair. It can be rails, boards, stone, hedge, barbed wire, woven wire, or anything the town fence viewers judge just as good at keeping cattle, horses, sheep and hogs off the land next door. Voters at the yearly town meeting can set a different number for their own town. In a county with no townships, the county board sets it.
This one is Illinois law, not Oak Park law. All Illinois findings
Fences four and one-half feet high, and in good repair, consisting of rails, timber boards, stone, hedges, barb wire, woven wire or whatever the fence viewers of the town or precinct where the same shall lie shall consider equivalent thereto suitable and sufficient to prevent cattle, horses, sheep, hogs and other stock from getting on the adjoining lands of another
4.5 ftheight of a legal fence
Also on agricultural fencing in Oak Park
- set in state lawIllinois puts the duty on the animal owner, not on the neighbor. A separate act bans letting livestock roam loose anywhere in the state and tells owners to put up whatever it takes to hold them. The owner pays in court for the damage loose animals do. The one way out is showing the animals got out without the owner knowing, and that the owner had taken reasonable care to keep them in. 510 ILCS 55/1Illinois · Statute
Documents behind this page
11 documents, of which 2 were published by Oak Park itself. Each was read on the date shown.
- Illinois General AssemblyIllinois Compiled Statutes, Property, Fence Act
- Village of Oak ParkFence Guidelines, restating the fence provisions of the Village Zoning Ordinance
- Illinois General AssemblyIllinois Compiled Statutes, Property, Fence Act, Legal and sufficient fences
- Illinois General AssemblyIllinois Compiled Statutes, Illinois Residential Building Code Act
- Illinois General AssemblyIllinois Compiled Statutes, Health Facilities and Regulation, Swimming Pool Safety Act
- Illinois General Assembly, Joint Committee on Administrative RulesIllinois Administrative Code, Title 77, Part 820, Swimming Facility Code
- Illinois General AssemblyIllinois Compiled Statutes, 65 ILCS 5, Illinois Municipal Code, Article 11, Division 13, Section 11-13-1
- Illinois General AssemblyIllinois Compiled Statutes, 605 ILCS 5, Illinois Highway Code, Article 9, Section 9-117
- Illinois General AssemblyIllinois Compiled Statutes, Chapter 765, Fence Act
- Village of Oak ParkZoning Ordinance, adopted 2017, revised 2 July 2025
- Illinois General AssemblyIllinois Compiled Statutes, 510 ILCS 55, Domestic Animals Running at Large Act
What this page does not cover
A city ordinance is not the only rule that reaches a fence. The zoning district a parcel sits in can change the height allowed on it, and so can an overlay district, a recorded easement, a fire hazard severity zone or a coastal zone. A homeowner association can be stricter than the city and nothing in the municipal code will say so. None of those appear here.
The rules above are the ones Oak Park publishes, plus the Illinois rules that apply where the city sets none. Fence laws in Illinois has the state layer in full.
This is general information drawn from published government documents. It is not legal advice, ordinances are amended, and the date beside each finding is the date the document was read. How findings are made · What the terms mean