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Fence Companies for Installation and Repair in Londonderry, NH
Londonderry lets a fence run right along your side and rear property lines at up to 6 feet, keeps front-line fences to 4 feet in an open style such as rail or picket, and treats anything over 6 feet as a structure that has to meet setbacks. Call (978) 800-2452 or use the form. A person reads every request and replies with what happens next.
- Free for homeowners
- Londonderry height and placement rules on this page
- Wood, vinyl, chain link and aluminum
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Fences in Londonderry
What kind of fence are you after?
Wood Fences
Privacy, picket, stockade and split-rail fences in cedar or pressure-treated lumber, new or replaced.
Vinyl Fences
Low-upkeep PVC privacy, semi-privacy and picket fences, with matching gates.
Chain Link & Aluminum
Galvanized or coated chain link and ornamental aluminum, including pool enclosures built to code.
Fence Repair
Leaning or rotted posts, sagging gates, storm-damaged sections and broken pickets or panels.
Front line, back line or both?
(978) 800-2452Tell us which property lines the fence will follow and how tall you want it, and we'll connect you with an installer who knows Londonderry's 4-foot and 6-foot lines.
Permits
Fence permits in Londonderry
What the town has posted. Londonderry's building FAQ asks, "Can I install a fence on my property line, and do I need a permit?" and answers "Yes" to the first half, allowing a fence of up to 6 feet on rear and side lines. It never addresses the permit half (Londonderry FAQ). The town's list of residential building permits names additions, remodels, sheds, decks, porches, garages, sunrooms, gazebos and carports, but not fences, and those building permits are handled on paper rather than through the online portal (Building Permits). A fence over 6 feet is a structure under the zoning ordinance, so that height in particular is worth raising with the town before you order materials.
- Side and rear lines
- Up to 6 ft, on the line
- Front line
- Up to 4 ft, open type (chain link, rail or picket)
- Over 6 ft
- A structure; must meet district setbacks
- Permit for 6 ft or less
- Not stated by the town; ask before building
- Above-ground pool
- No added fence if solid-sided with walls 48 in or higher
- Historic Overlay
- Heritage/Historic District Commission approval (2023 fence example)
New Hampshire basics. Each town decides its own permits and fees (RSA 155-A:2), and statewide the 2024 codes govern every permit request from January 1, 2027, with either code set accepted through December 31, 2026. Fence installers hold no state license, since the Attorney General says "contractors do not need to be licensed," so ask for references and proof of insurance, sign a written contract before paying anything, and treat a deposit over 50% as a warning sign (NH AG). RSA 359-G sets a notice-of-claim process for residential construction defects, though it doesn't say whether a stand-alone fence counts. More on our New Hampshire fence rules page.
Post holes and Dig Safe. Notify Dig Safe at 811 or 888-DIG-SAFE at least 72 hours before digging, not counting weekends or legal holidays, and no more than 30 days ahead. New Hampshire law asks you to outline the dig area first with white paint, stakes or other white markings, and the ticket stays good for 30 days. Dig Safe says property owners and contractors alike must call, and it lists a fence on your own property as an example; a homeowner digging at home is spared the civil penalty in RSA 374:55, not the duty to notify (Dig Safe; Dig Safe home page; RSA 374). The notice rule in RSA 374:51 covers digging within 100 feet of an underground facility.
Last verified November 2026. Fees, restrictions and deadlines on this page are due for re-checking by January 2027. New England Fence Pros is a referral service: we don't build fences or pull permits, and the company you hire handles any paperwork.
Height and placement
Height limits, setbacks and corner lots in Londonderry
Two heights, depending on the line. The town FAQ is unusually direct: a fence can go "no more than 6 feet in height on your rear and side property lines," while "Fences along the front property line may not exceed 4 feet in height" and "should be of the 'open' type such as chain-link, rail, or picket" (Londonderry FAQ). A solid privacy panel along the street side is the thing to avoid; a picket or split-rail run fits the front rule.
Above 6 feet. "Any fence taller than 6 feet is considered a structure and must then meet the setback requirements," the FAQ continues, and the zoning definitions say the same for residential fences (Zoning Ordinance, as amended through August 18, 2025). In the AR-I district that means 40 feet back from the front line and 15 feet from side and rear lines, and the town's shed handout notes that a corner lot has the front setback on both street sides (shed handout). Retaining walls under 3 feet are left out of the definition of a structure.
What we couldn't confirm. The ordinance's fence section, including any sight triangle at intersections or a rule on which side faces out, could not be read online. If your lot sits on a corner, ask the town how close to the intersection a front fence can run. Where the line itself is in doubt, a survey or the town can confirm it.
Pools
Pool fences in Londonderry
Above-ground pools. Londonderry answers this one in plain words. Asked whether an above-ground pool needs a fence around it, the FAQ says "No," provided the sides are a solid structure rather than an inflatable vinyl type and "the walls are at least 48 inches in height above the ground" (Londonderry FAQ). A soft-sided pool, or a wall under 48 inches, doesn't meet that answer.
Everything else. In-ground pools go through the town's Pool Packet, written to the 2021 IRC, which also covers pool wiring under NEC Article 680 and a GFCI receptacle 6 to 20 feet from the water (Pool Packet). Barriers fall under the state's adopted swimming pool code. The CPSC's guidance, which is advice rather than law, describes a barrier at least 48 inches high with no gap that passes a 4-inch sphere and gates that open outward and close and latch on their own (CPSC Pub. 362).
Historic and wetlands
Historic districts and wetlands in Londonderry
The Historic Overlay. Londonderry's Heritage/Historic District Commission reviews work in the Historic Overlay "H" district under state law and the zoning ordinance (Heritage/Historic District Commission). Fences are part of that review: the commission's November 16, 2023 agenda carried a Certificate of Approval application for a wooden post-and-rail fence on the Town Common, a lot "Zoned AR-1 & Historic Overlay District" (November 2023 agenda). The overlay boundary wasn't readable online, so ask the commission if your lot is near the Common.
Wetland buffers. The Conservation Overlay protects wetland buffers; we could not confirm the buffer width. Under the Buffer Mitigation Policy approved September 27, 2022, a buffer impact that can't be avoided goes through the Conservation Commission to the Planning Board, usually with the buffer enlarged somewhere else (Buffer Mitigation Policy). If a fence line runs toward a brook or wet ground, ask before setting posts there.
Londonderry's homes
Farm-town lots, barns and single-family streets
Londonderry is mostly single-family: 7,346 of 8,847 housing units in the ACS 2009–2013 figures (NHES community profile). The AR-I district is described as land "developed for agricultural and forestry uses," keeps livestock to lots of 2 acres or more, and requires each house lot to have 22,000 square feet of contiguous land above the 100-year flood elevation (Zoning Ordinance). Lots like these suit split-rail and paddock-style fencing as readily as a vinyl privacy run.
Old farmhouses. A 2007 Historic Properties Task Force counted 141 properties of 100 years or more, from Colonial and Federal houses to Victorians and connected farmhouses, and mapped 85 barns, and recommended that any new rules be voluntary (Task Force report). The Conservation Commission counts preserving "the community's orchards" among its duties (Conservation Commission). On an older farm lot, a wood post-and-rail line along the road keeps within the 4-foot open-style front rule.
FAQ
Londonderry fence questions
How tall can a fence on my Londonderry property line be?
The town FAQ allows up to 6 feet on rear and side property lines. Along the front property line the limit is 4 feet, and the town says the fence should be an open type such as chain link, rail or picket.
What happens if I want a fence taller than 6 feet?
Londonderry then treats the fence as a structure, so it has to meet the setbacks for the district. In the AR-I district those are 40 feet from the front and 15 feet from the side and rear lines, and on a corner lot the front setback applies to both streets.
Does my above-ground pool need its own fence in Londonderry?
Not if the pool has solid sides, rather than an inflatable vinyl type, and its walls stand at least 48 inches above the ground. That is the town's answer in its FAQ; in-ground pools and anything else go through the pool permit packet.
Do I need a permit for a 6-foot fence in Londonderry?
The town has not posted a direct answer. Its FAQ covers how tall a fence can be, and its list of residential building permits does not include fences, so check with the town before the posts go in.
What does it cost me to use New England Fence Pros?
Nothing. Asking is free for homeowners; the contractor prices the job, and the price and contract are between you and them.
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