Fence rules in New Hampshire come from two places at once. State statutes in Title XLVII govern shared boundary fences, spite fences, and the process for settling disputes, while your town’s zoning ordinance controls height, materials, setbacks, and whether you need a permit. New Hampshire fence laws also reach into adverse possession, pool safety, livestock containment, and barbed wire near roads, and getting any of these wrong can cost you a fence you just built or hundreds of dollars a day in fines.
Who Pays for a Shared Boundary Fence
The core statute is RSA 473:1. When two adjoining parcels are both “under improvement,” the owners must build and repair the partition fence between them in equal shares.1New Hampshire General Court. New Hampshire Code 473:1 – Duty Read that phrase carefully. The shared duty applies when both properties are actively used or developed. If your land is landscaped and your neighbor’s is vacant woodland, you pay for the whole fence yourself.
Neighbors can split responsibility differently by written agreement. Under RSA 473:2, once the agreement is recorded in the town records, it binds every future owner and occupant of both parcels.2Justia. New Hampshire Code 473:2 – Division by Agreement Buy a property with a recorded fence-maintenance agreement attached to it and you inherit its terms, known to you or not. Checking town records before closing is worth the hour.
A pattern of use can also lock in a particular division. RSA 473:3 treats 20 years of acquiescence in the same arrangement as the equivalent of a formal agreement.3New Hampshire General Court. New Hampshire Code 473:3 – Proof of Division If the family next door has maintained the east half of the shared fence for decades, that history may be enforceable against you when you try to change the split.
Height, Materials, and Permits
New Hampshire has no statewide maximum fence height for ordinary residential fences. Limits come from your town’s zoning ordinance. A common pattern is four feet in front yards and six feet in side and rear yards, with fences under those thresholds exempt from setback rules. Anything taller than six feet is usually treated like any other structure and has to meet the setback rules for your zoning district. Exceeding the height limit generally requires a variance from the zoning board of adjustment.
Materials are also a local question. Some towns prohibit chain-link fencing in historic districts. Others require the finished side of a fence to face the neighbor or the street. Permit rules vary just as much: some municipalities require permits only for fences in historic districts or those over six feet, while others require none. Call the local planning or building department before you order materials.
Spite Fences
New Hampshire treats a fence built to annoy the neighbors as a private nuisance. Under RSA 476:1, any fence or fence-like structure that unnecessarily exceeds five feet and was erected to annoy the owners or occupants of adjoining property qualifies.4New Hampshire General Court. New Hampshire Code 476:1 – Fence as Private Nuisance Two elements have to line up: height over five feet without a practical reason, and intent to annoy.
Intent is where these cases turn. If your neighbor built a ten-foot privacy fence and can point to a legitimate purpose, such as blocking road noise or keeping deer out of a garden, the spite fence statute probably will not help you even if you believe the real motivation was hostility. Courts look at whether the fence serves some useful purpose for the person who built it. When both elements are proven, a court can order the fence removed or reduced in height, and the neighbor may recover compensatory damages for the loss of use and enjoyment of their property while the fence stood.
Settling Disputes Through Fence-Viewers
New Hampshire has a resolution mechanism most homeowners have never heard of. Fence-viewers are local officials, usually the selectboard or people it appoints, who can step in when neighbors cannot agree about a shared fence.
Under RSA 473:4, either owner can apply to the fence-viewers when they cannot agree on how to divide responsibility. The fence-viewers make the division, and once their decision is recorded in the town records, it carries the same legal weight as a voluntary agreement.5New Hampshire General Court. New Hampshire Code 473:4 – Division by Fence-Viewers They also handle complaints about neglected fences. If your neighbor lets their half fall apart, ask the fence-viewers to inspect. Under RSA 473:6, if they find the fence insufficient, they set a deadline for repair.6New Hampshire General Court. New Hampshire Code 473:6 – Insufficient Fence When a shared fence runs along water, RSA 473:7 lets fence-viewers decide where the fence should sit if building on the exact boundary is impractical or unreasonably expensive.7New Hampshire General Court. New Hampshire Code 473:7 – Waters and Fences
This route is faster and cheaper than court. Not every town uses it often, though, and some selectboards are unfamiliar with these older statutes. If the fence-viewer process does not resolve the problem, civil litigation is still available. Talking with your neighbor first often works too, and splitting the cost of a professional survey usually settles placement disputes for less than what a lawsuit would cost either side.
A Fence in the Wrong Place Can Move the Property Line
New Hampshire’s statute of limitations for recovering real property is 20 years under RSA 508:2.8New Hampshire General Court. New Hampshire Code 508:2 – Real Actions After that period, someone can claim your land by adverse possession if their use was without your permission, open and notorious, continuous, and exclusive for the full 20 years.9New Hampshire Law Library. Adverse Possession
A misplaced fence is one of the most common ways adverse possession claims arise. If a neighbor’s fence has enclosed a strip of your land for two decades and you never objected, that strip may no longer legally be yours. Survey before you build, and address encroachments quickly rather than letting them ripen.
Pool Barriers, Barbed Wire, and Livestock
Fencing around a residential pool is a separate regulatory world. New Hampshire adopts the International Swimming Pool and Spa Code, which requires a barrier around outdoor pools and spas at least 48 inches tall measured from the outside. The gap under the barrier cannot exceed two inches on unpaved surfaces like grass or four inches on paved surfaces. Gates must open away from the pool and be self-closing and self-latching. A yard fence that happens to enclose the pool still has to meet these specifications, and the local building permit process enforces them.
Barbed wire is restricted near roads. Under RSA 236:15, a fence with barbed wire within six feet of the ground next to a street or highway in the compact part of a town, village district, or city is a public nuisance.10New Hampshire General Court. New Hampshire Revised Statutes 236:15 – Purprestures; Barbed Wire The same statute treats any building, structure, or fence erected on or over a highway as a public nuisance. Rural stretches outside compact zones face fewer restrictions, but local ordinances may still apply, and electric fences in residential areas are usually handled at the municipal level.
Livestock owners are held to a higher fencing standard. Under RSA 635:3, anyone with charge or custody of sheep, goats, cattle, horses, swine, or domestic fowl who knowingly, recklessly, or negligently allows them onto someone else’s improved or enclosed land and causes damage is guilty of a violation.11New Hampshire General Court. New Hampshire Code 635:3 – Trespassing Stock or Domestic Fowl Complaints go to law enforcement or the local animal control officer. If your fencing fails because you neglected it and your animals cause damage, you face both criminal and civil exposure.
Penalties for Violating Local Fence Rules
Municipalities enforce zoning through their building or zoning departments, usually after a neighbor complains. If an inspector finds a violation, the town issues a notice with a compliance deadline, often somewhere between 10 and 30 days.
The fines are set by state law and apply everywhere. Under RSA 676:17, violating a local zoning ordinance adopted under the planning and zoning title carries a civil penalty of $275 per day for the first offense and $550 per day for each subsequent offense. Each day the violation continues after notice counts as a separate offense.12New Hampshire General Court. New Hampshire Code 676:17 – Fines and Penalties; Second Offense A fence that violates height limits or uses banned materials can rack up thousands of dollars in fines within weeks. In severe cases, a municipality can remove a hazardous fence or one that encroaches on public land and bill the owner for the work.
Before You Dig
New Hampshire law requires you to have underground utility lines marked before you dig post holes. Call 811 to reach Dig Safe. RSA 374:48 sets the notification rules for any excavation on private property or in a public way. Submit the request at least a few full business days before you plan to dig. There is no fee for the locate service. Hitting a buried gas line or fiber cable can hurt you and leave you paying for the repair.
Two other things belong on the same pre-build checklist. Get the property line surveyed if there is any question about where it runs, because a fence a foot on the wrong side is a slow-motion adverse possession problem. Then talk to the neighbor before the first post goes in, especially if the fence will sit on or near the boundary. Most fence disputes start with confusion about location, not bad faith, and a five-minute conversation avoids the ones that end up in front of the fence-viewers or a judge.