Fence laws in Trenton, New Jersey
What the Trenton municipal code says about fences, one topic at a time, with the section number and a link to the document behind every line. Where Trenton sets no rule of its own, the New Jersey rule is shown in its place and marked as such.
Fence laws in Trenton, New Jersey, question by question
The short version
- Who pays on the line
- Trenton writes the boundary rule in both directions at once, and the answer turns on where the fence sits relative to the line. The figure is 5 feet, for how far inside the line a fence may sit.
- How tall
- In a Trenton residential district a fence or wall of up to six feet is permitted in a rear or interior side yard, and in an interior side yard it may run forward as far as the front building line, and the answer turns on the district and which yard the fence is in. The figure is 6 feet, for fence in a rear or interior side yard.
- Permits
- Trenton puts the Zoning Officer first and says so twice, and the answer turns on which of the three approvals is in question. The figure is 20 days, for time to appeal a Zoning Officer decision.
- Pool barriers
- Trenton sets no statewide pool barrier rule. The chapters that were read are listed below. Cities and counties decide this one.
- Spite fences
- Trenton has no spite fence statute. The chapters that were read are listed below. Cities and counties decide this one.
- Measured from what
- Trenton answers the question a sloping or raised boundary always raises, and answers it in the neighbor favor. The figure is 6 feet, for rear yard height measured from the neighbor side.
- Corner lots
- On a Trenton corner lot no structure, freestanding sign, accessory structure or landscape may exceed thirty-six inches above the street grade within fifteen feet measured at the curb lines of the intersecting streets, and the answer turns on whether the fence is open and what the corner is. The figure is 36 inches, for height limit inside the sight visibility triangle.
- Retaining walls
- New Jersey writes its own rule for a wall that holds back earth instead of leaving it to the national code. The figure is 4 feet, for retaining wall height at or above which a construction permit is required.
- Materials
- Six materials are prohibited in a Trenton fence or wall: scrap metal, corrugated metal, sheet metal, spiked posts meaning sharpened post ends that can injure people or animals, razor wire, and barbed wire and chicken wire, and the answer turns on the district and what is being added to the fence. The figure is 6 feet, for minimum average spacing of ornamentation.
- Livestock
- New Jersey sets one height for a lawful fence and one job for it to do. The figure is 50 inches, for minimum height of a lawful fence, which the statute states as four feet and two inches.
Who owns the fence between two properties in Trenton?
Compare fences on the property line across all 50 states
Trenton answers this, but the answer changes depending on where the fence sits relative to the line.
Trenton writes the boundary rule in both directions at once. A fence or wall, including all posts, bases and other structural parts, has to be located completely within the boundaries of the lot it belongs to, and it also has to be on the lot line or within five feet of it. The second half is unusual. Most codes keep a fence off a neighbor and say nothing about how far in it may sit, which leaves an owner free to fence a strip of their own yard away. Trenton does not. The finished face has to be directed toward the abutting property or right-of-way. Maintenance of both sides falls on the owner whose land the fence is on, and that duty is lifted only where the owner is denied access to the abutting property. Permanent structures and retaining walls are prohibited in utility easements unless the City Council or another authorizing agency approves.
A fence or wall, including all posts, bases, and other structural parts must be located completely within the boundaries of the lot on which it is located. Fences must be within five feet of the lot line.
Section 315-9.4(H)(1)(c), with (H)(3) and (H)(4)
The answer turns on where the fence sits relative to the line.
- the far side
- Nothing crosses the line.
- the near side
- Within five feet of it. 5 ft
- the finished face
- Toward the neighbor or the street.
- maintenance
- Both sides, unless access is refused.
Also on fences on the property line in Trenton
- set in state lawNew Jersey only splits a fence on the line when at least one of the two neighbors is pasturing or keeping animals. Each neighbor who uses the land that way builds and keeps up a fair share. A neighbor who leaves the land empty and open, or who keeps no animals, owes nothing toward it. That is narrower than most states, where both sides share the cost whatever the land is used for. N.J.S.A. 4:20-7New Jersey · Statute
How tall can a fence be in Trenton?
Compare fence height across all 50 states
Trenton answers this, but the answer changes depending on the district and which yard the fence is in.
In a Trenton residential district a fence or wall of up to six feet is permitted in a rear or interior side yard, and in an interior side yard it may run forward as far as the front building line. In front of that line the answer depends on the district. Most residential districts allow a four foot open fence in the front yard or corner side yard, including the strip of interior side yard between the front building line and the minimum front setback, and along the edges of a walkway. The RL-1 and RL-2 districts allow no fence or wall in a front yard or corner side yard at all. The commercial, mixed-use and special purpose districts follow the ordinary residential pattern. Downtown is different again and requires a wall rather than permitting a fence. The two industrial districts allow ten feet in any yard.
In the RL-1 and RL-2 Districts, no fence or wall is permitted within the front yard or corner side yard.
The answer turns on the district and which yard the fence is in.
- a rear or interior side yard
- Six feet. 6 ft
- most front yards
- Four feet, and open. 4 ft
- the RL-1 and RL-2 districts
- No front yard fence at all.
- an industrial district
- Ten feet in any yard. 10 ft
Also on fence height in Trenton
- no rule, documents checkedNew Jersey does not limit how tall a fence at a house can be. State law gives that job to the towns, which may set the size, height and shape of fences between neighboring lots. Height is a town rule in every New Jersey town. R.S. 40:48-1(29)New Jersey · Statute
Do I need a permit for a fence in Trenton?
Compare permits across all 50 states
Trenton answers this, but the answer changes depending on which of the three approvals is in question.
Trenton puts the Zoning Officer first and says so twice. No land may be used and no structure may be erected, constructed, reconstructed, altered or converted until a zoning permit is issued stating that the work conforms to the ordinance or that a variance has been granted by the appropriate board. The Zoning Officer reviews and makes the final decision on a zoning permit application, and no drawings or plans will be accepted without a zoning permit, which puts the zoning check in front of the construction permit rather than beside it. A decision of the Zoning Officer may be appealed only if an application is filed within twenty days of the decision. The summary table of land development applications lists the zoning permit, the construction permit and the certificate of occupancy as three separate approvals with three different deciders.
No land may be used, no use may be commenced, and no structure may be erected, constructed, reconstructed, altered, converted, and no land, use, or structure may be changed from an existing use to a new use until a zoning permit is issued by the Zoning Officer, stating the use, structure, or building conforms and complies with the provisions of this Ordinance or that a variance has been granted from the appropriate provisions of this Ordinance by the applicable Board.
The answer turns on which of the three approvals is in question.
- any structure
- A zoning permit first.
- submitting plans
- Not accepted without one.
- an appeal
- Twenty days to file. 20 days
- the construction permit
- A separate approval, from the Construction Official.
Also on permits in Trenton
- set in state lawNew Jersey runs one construction code for the whole state. The Commissioner of Community Affairs adopts it after a public hearing, and it covers building work everywhere in the state. The list of work that needs a permit, and the list of work that does not, sit inside that code at N.J.A.C. 5:23 and not in the statute. N.J.S.A. 52:27D-123New Jersey · Statute
Pool fence requirements in Trenton
Compare pool barriers across all 50 states
Trenton law has no rule about this. The chapters that were read are listed below. Cities and counties decide it instead.
New Jersey does have a pool barrier rule. It sits in the state construction code at N.J.A.C. 5:23-3.21, which takes in the International Swimming Pool and Spa Code and then changes parts of it. The Department of Community Affairs publishes that rule only as a PDF and its text could not be read, so no height is claimed here. The numbers live in the national code rather than in New Jersey text.
This one is New Jersey law, not Trenton law. All New Jersey findings
Documents read before writing that:
- N.J.A.C. 5:23-3.21New Jersey Department of Community Affairs
- N.J.S.A. 52:27D-123New Jersey Legislature
Spite fence laws in Trenton
Compare spite fences across all 50 states
Trenton law has no rule about this. The chapters that were read are listed below. Cities and counties decide it instead.
New Jersey has no statewide spite fence law. A spite fence is one built to bother a neighbor rather than to do a job. Title 4, Chapter 20 covers fences on the line and says nothing about spite. State law instead lets each town set the size and height of fences between neighbors, so the answer is a town rule.
This one is New Jersey law, not Trenton law. All New Jersey findings
Documents read before writing that:
- N.J.S.A. 4:20-7New Jersey Legislature
- R.S. 40:48-1(29)New Jersey Legislature
How fence height is measured in Trenton
Compare how height is measured across all 50 states
Trenton answers this in its own law. The words that do it are quoted below.
Trenton answers the question a sloping or raised boundary always raises, and answers it in the neighbor favor. A fence or wall is measured from the ground level at the adjacent property or the adjacent right-of-way, taken at the base of the side that faces that property or right-of-way. So an owner who builds the ground up behind a fence gains nothing, because the measurement is taken on the far side. The height rules then treat a combination of fence and wall as one thing, capping the two together rather than separately. The section also answers the post cap question with a proportion instead of a number: light fixtures, post tops, finials and other ornamentation above the mass of the fence may not exceed one third of the permitted height, and may sit at intervals of no less than six feet on average.
Fences and walls are measured from the ground level at the adjacent property or adjacent right-of-way from the base of the side directed toward the abutting property or right-of-way.
6 ftrear yard height measured from the neighbor side
Also on how height is measured in Trenton
- left to the townNew Jersey states a fence number and never says where to measure it from. The state construction code says no permit is needed for a fence six feet or less in height, and it never says six feet above what. The Municipal Land Use Law fills the gap by handing the bulk, height, number of stories, direction and size of buildings and other structures to a town zoning rule. The town decides where the measuring starts. N.J.S.A. 40:55D-65 bNew Jersey · Zoning code
Fence rules for corner lots in Trenton
Compare corner visibility across all 50 states
Trenton answers this, but the answer changes depending on whether the fence is open and what the corner is.
On a Trenton corner lot no structure, freestanding sign, accessory structure or landscape may exceed thirty-six inches above the street grade within fifteen feet measured at the curb lines of the intersecting streets. A fence inside that triangle gets an escape the other items do not: an open fence may stand at four feet. A second triangle is required where a street meets an alley, measured fifteen feet from the centerline of the alley and from the street edge of the alley back, and from the centerline to the curb line. One thing to read carefully: in both paragraphs the published text says a fence within the sight visibility triangle is limited to thirty-six feet, where the surrounding sentence and the thirty-six inch limit on everything else make clear that inches were meant.
On a corner lot, no structure, freestanding sign, accessory structure, or landscape can exceed a height of 36 inches above the street grade within 15 feet as measured at the curb lines intersecting streets. Fences within the sight visibility triangle are limited to 36 feet unless such fence is an open fence, where it is permitted to a height of four feet.
The answer turns on whether the fence is open and what the corner is.
- inside the triangle
- Thirty-six inches above the street grade. 36 in
- the triangle itself
- Fifteen feet at the curb lines. 15 ft
- an open fence
- Four feet. 4 ft
- a street and an alley
- A second triangle applies.
Also on corner visibility in Trenton
- set in state lawNew Jersey protects the driver view in its highways title, and only for signs that need a state permit. Section 27:5-9 sets the conditions on that permit, and one of them is that the sign may not block a clear view of the road ahead or of official signs and signals. Nothing there reaches a fence at a house. A town gets the power to draw a corner sight triangle, the clear space kept open where two streets meet, from the Municipal Land Use Law. N.J.S.A. 27:5-9New Jersey · Traffic code
Retaining wall rules in Trenton
Compare retaining walls across all 50 states
New Jersey answers this in its own law. The words that do it are quoted below.
New Jersey writes its own rule for a wall that holds back earth instead of leaving it to the national code. A construction permit is needed to build, enlarge, change, rebuild or tear down such a wall four feet or taller, and also a shorter one that hurts a foundation. The four feet counts every wall on the same slope added together, measured from the bottom of the footing to the top of the wall. Walls the town already reviewed in subdivision and site plan work, and walls a county engineer or the state transportation department reviews, are left out.
This one is New Jersey law, not Trenton law. All New Jersey findings
No person shall construct, enlarge, alter, reconstruct, or demolish a retaining wall or series of retaining walls having a total height four feet or greater, or a retaining wall less than four feet having a negative impact on a foundation, without first obtaining a construction permit.
4 ftretaining wall height at or above which a construction permit is required
Fence materials allowed in Trenton
Compare materials across all 50 states
Trenton answers this, but the answer changes depending on the district and what is being added to the fence.
Six materials are prohibited in a Trenton fence or wall: scrap metal, corrugated metal, sheet metal, spiked posts meaning sharpened post ends that can injure people or animals, razor wire, and barbed wire and chicken wire. Nothing else is named, so the code controls appearance through openness and ornament rather than through a permitted list. What may sit on top of a fence is written as a proportion: light fixtures, post tops, finials and other ornamentation above the mass of the wall or fence may not exceed one third of the permitted height, spaced no less than six feet apart on average. The downtown district is the exception that names materials, requiring either a fifty percent opaque wall six feet high of vertical metal posts with a base no higher than two feet and piers of brick or stucco, or a four foot wall of brick, cast stone, stone, terra cotta or stucco.
Light fixtures, post tops, finials and other ornamentation above the mass of the wall or fence must not exceed 1/3 of the permitted height of the fence or wall. Such ornamentation may be placed at intervals no less than six feet on average.
Section 315-9.4(H)(1)(d), with (H)(1)(b)
The answer turns on the district and what is being added to the fence.
- scrap, corrugated or sheet metal
- Prohibited.
- barbed, razor or chicken wire
- Prohibited.
- a finial or post cap
- A third of the permitted height. 6 ft
- the downtown district
- Brick, stone, terra cotta or stucco.
Also on materials in Trenton
- set in state lawNew Jersey calls an electric security fence a perimeter fence intrusion protection system, and it sets nine things such a fence has to do. It ties into an alarm somebody watches. It cannot go on land a town has set aside for homes only. It runs off a storage battery of no more than 12 volts and meets the international standard for the charger. It stands behind a fence or wall with no current in it at least five feet tall, stops at ten feet, carries warning signs no more than 40 feet apart, and is put in by somebody trained or certified to install it. N.J.S.A. 45:5A-54New Jersey · Statute
Livestock and boundary fence law in Trenton
Compare agricultural fencing across all 50 states
New Jersey answers this in its own law. The words that do it are quoted below.
New Jersey sets one height for a lawful fence and one job for it to do. It stands four feet and two inches from the surface of the ground, and it has to be close, strong and tight enough that horses and cattle cannot get through or under. Where the fence sits on the line and either neighbor works the land, it also has to be tight enough to stop sheep. Low meadow along a stream or river that floods is left out of that last part.
This one is New Jersey law, not Trenton law. All New Jersey findings
if four feet and two inches high measuring from the level or surface of the earth, and close, strong and sufficient to prevent horses and cattle from going through or under it.
50 inminimum height of a lawful fence, which the statute states as four feet and two inches
Also on agricultural fencing in Trenton
- set in state lawNew Jersey ties the damage claim to the fence. When horses, cattle or sheep get over, push through or break down a fence the chapter calls lawful, the owner of the animals pays the hurt neighbor for all of it. Two neutral people from the neighborhood set the amount, one picked by each side, and each has to own the same sort of property that was damaged. If the animal owner will not pick, the hurt neighbor picks both. If the two cannot agree, they bring in a third. N.J.S.A. 4:20-22New Jersey · Statute
- set in state lawNew Jersey bans barbed wire between neighbors unless the neighbor agrees to it. A fence on the line made of barbed wire, or of wire with barbs or points strung on it, is not a lawful fence without the next door owner's consent, and the statute forbids it outright without that consent. Most farm states treat barbed wire as the normal build. New Jersey does the opposite. N.J.S.A. 4:20-3New Jersey · Statute
Documents behind this page
14 documents, of which 3 were published by Trenton itself. Each was read on the date shown.
- New Jersey LegislatureNew Jersey Statutes (Unannotated), Title 4, Section 4:20-7, Duty to make and maintain portion of partition fence
- City of TrentonTrenton Code, Chapter 315, Land Development, Article 9, On-Site Development Standards, Section 315-9.4(H), Fences and Walls
- New Jersey LegislatureAssembly Bill A697 (2022 session), reproducing R.S.40:48-1 paragraph 29, Fences
- New Jersey LegislatureNew Jersey Statutes (Unannotated), Title 52, Section 52:27D-123, State Uniform Construction Code; adoption
- City of TrentonTrenton Code, Chapter 315, Land Development, Article 13, Land Development Application, Section 315-13.12, Zoning Permit
- New Jersey Department of Community AffairsN.J.A.C. 5:23-3, Uniform Construction Code subcodes (PDF, could not be read)
- New Jersey Business Action Center, Department of StateMunicipal Land Use Law, N.J.S.A. 40:55D-1 et seq.
- New Jersey LegislatureNew Jersey Statutes, Title 27, Highways, Chapter 5, Roadside Sign Control and Outdoor Advertising
- City of TrentonTrenton Code, Chapter 315, Land Development, Article 9, On-Site Development Standards, Section 315-9.1(C), Sight Visibility
- New Jersey Department of Community AffairsNew Jersey Administrative Code, Title 5, Chapter 23, Uniform Construction Code, Subchapter 2, Administration and Enforcement
- New Jersey LegislatureP.L.2021, Chapter 2, An Act concerning perimeter fence intrusion protection systems and other alarm systems
- New Jersey LegislatureNew Jersey Statutes (Unannotated), Title 4, Agriculture and Domestic Animals, Section 4:20-1, Sufficiency of fences in general
- New Jersey LegislatureNew Jersey Statutes (Unannotated), Title 4, Agriculture and Domestic Animals, Section 4:20-22, Damages by animals breaking through lawful fences
- New Jersey LegislatureNew Jersey Statutes (Unannotated), Title 4, Agriculture and Domestic Animals, Section 4:20-3, Partition fences of barbed wire
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 Trenton publishes, plus the New Jersey rules that apply where the city sets none. Fence laws in New Jersey 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