The Town of Londonderry's Building and Zoning Enforcement division at 268B Mammoth Road issues permits for a Rockingham County town of around twenty-eight thousand between Manchester and Derry, one of the three fastest-growing municipalities in the state by net gain. The office runs from half past eight to five on weekdays, with a permit technician as the general point of contact for building, health and zoning questions alike.
Two mechanical rules govern how a Londonderry file moves. Some permits can be obtained through the town's online permit portal and all others must be submitted in person or by mail — the town does not accept permit submissions by email, which catches out applicants used to sending a PDF. And oil burner, fire alarm and sprinkler permits are issued at the Fire Department at 280 Mammoth Road, only on Mondays from one to four in the afternoon and Thursdays from half past eight to noon. Seasonal and daily burn permits are excluded from those windows. Miss both and the wait is most of a week.
This guide covers the Town of Londonderry in Rockingham County. Derry, Manchester, Litchfield, Hudson and Windham are separate municipalities with their own building officials, and no New Hampshire county issues building permits in practice.
Two windows a week for the fire permits. Oil burner, fire alarm and sprinkler permits are issued only on Mondays from one to four and Thursdays from half past eight to noon, at the Fire Department on Mammoth Road rather than at the building office. And no permit submission is accepted by email — it is the portal, the counter or the post. Both rules are scheduling facts, and both are cheap to plan around and expensive to discover.
What requires a building permit in Londonderry?
New Hampshire applies one code everywhere and leaves the enforcing to the town. Under RSA 155-A all buildings, building components and structures constructed in New Hampshire must comply with the state building code and the state fire code — there is no opting out of the standard. What varies is who administers it: a municipality takes on permitting and inspection only by adopting an enforcement mechanism under RSA 674:51, and a good number of New Hampshire towns never have. The code itself is the twenty twenty-one international building, residential, existing building, plumbing, mechanical and swimming pool codes with the twenty eighteen energy code and the twenty twenty-three National Electrical Code, all with New Hampshire amendments, in force since the first of July twenty twenty-four. So in Londonderry the questions are whether the municipality enforces, what it has amended, and the two weekly fire permit windows and the refusal of email submissions.
Two statutory rules shape every New Hampshire project and neither is in the model code. The first is a lock on the edition: the state building code in effect when the permit application is received by the governing authority remains in effect for the duration of the work covered by that permit, so a long project is not overtaken mid-build by a new code. The second is the concurrency period: for six months after a new edition takes effect an applicant may elect to show compliance under either the old code or the new one — but not a combination of the two. Beyond that, the code draws the ordinary permit line: construction, alteration, renovation, repair, removal and demolition are covered; ordinary repairs are not.
Typically permit required
- Structural work of any kind, on a permit through the portal, in person or by post
- Oil burner, fire alarm and sprinkler permits, at the Fire Department in its two weekly windows
- Replacement of building framing found to be damaged during a re-roof or re-side, with a follow-up inspection
- New construction and renovation, on a permit obtained before work begins under RSA 155-A:4
- Alteration, renovation, rehabilitation, repair, removal and demolition of buildings previously erected
- Electrical, plumbing and mechanical work, by tradespeople licensed by the state
Often exempt
- Replacing roof shingles or siding, provided no structural work is involved
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- A tent of any size erected as an accessory structure at an owner-occupied one or two-family dwelling
- Painting, papering, flooring, cabinets and similar finish work
What the municipality may change, and what it may not
New Hampshire lets a municipality amend the state building code, and then puts a check on it. Local amendments are adopted by the legislative body under RSA 674:51, but since the twenty twenty-two amendment to that statute a local ordinance amending the code may not be enforced unless it has been confirmed by the state Building Code Review Board, which publishes the amendments it confirms. Issuing permits and collecting fees are not themselves amendments and need no confirmation. A municipality that has adopted an enforcement mechanism may contract the work to a local enforcement agency or a qualified third party rather than employ its own building official, and that contractor holds the same authority as a building inspector. Appeals from a local official go to the municipality's own building code board of appeals; appeals from the State Fire Marshal go to the Building Code Review Board. Beyond that, the two weekly windows for fire permits at the Fire Department, the refusal of email submissions, and the growth pressure on the town's building stock.
Who handles permitting in Londonderry?
The Building and Zoning Enforcement division is the permitting authority inside the town, administering the New Hampshire State Building Code through the enforcement mechanism Londonderry has adopted, with a permit technician as the general contact for building, health and zoning questions. The Fire Department issues oil burner, fire alarm and sprinkler permits in its own windows, the environmental department issues shoreland, wetlands and sewage approvals, and the Office of Professional Licensure and Certification licenses the trades statewide.
| Detail | Information |
|---|---|
| Department | Londonderry Building and Zoning Enforcement |
| Office | 268B Mammoth Road, Londonderry, NH 03053 |
| Phone | (603) 432-1100 extension 115 |
| Fire permits | Fire Department, 280 Mammoth Road, (603) 432-1124 |
| Filing | Portal for some permits; all others in person or by post — not email |
| Hours | Monday to Friday, 8:30 am to 5:00 pm |
Permit types
Residential permits
A Londonderry house project checks which permits the portal covers, files the rest at the counter or by post, and books its oil burner or sprinkler work into one of the Fire Department's two weekly windows. A re-roof or a re-side needs no permit provided no structural work is involved — but the town is explicit that if framing is found to need replacement because of moisture damage, a permit and a follow-up inspection are then required, which is a mid-job discovery worth anticipating.
How New Hampshire contractor credentials work
New Hampshire issues no general contractor licence. A builder needs no state credential to take on a house, and the statute puts the duty squarely on them anyway: the contractor is responsible for meeting the minimum requirements of the state building code and state fire code, and no municipality may be held liable for a contractor's failure to comply. The trades are licensed through the Office of Professional Licensure and Certification: electricians under the electricians' board, plumbers under the plumbers' board, and gas fitters and mechanical trades under the licensing required by RSA 153:27. In Londonderry the credential is checked at permit issue where the municipality enforces, and where it does not the licence requirement still applies to the tradesperson doing the work.
Commercial permits
Commercial work in Londonderry — the airport-adjacent development, the industrial and distribution parcels along the interstate, and the growing retail frontage — runs through the same division with the state fire code alongside and the Fire Department handling the alarm and sprinkler permits on its own schedule. The town's position on the airport's edge puts a share of larger institutional and logistics work into the file.
The state permits that sit outside the town
Several New Hampshire approvals come from the state rather than the municipality, and they are the ones most often missed. The Shoreland Water Quality Protection Act requires a permit from the Department of Environmental Services for construction, excavation and filling within two hundred and fifty feet of a protected water body — a state permit, not a local ordinance. Wetlands work and subsurface sewage approval run through the same department. The State Fire Marshal permits, inspects and certifies buildings owned by the state, the university system and the community college system wherever they stand, and operates the State Building Permit Program for municipalities without a code enforcement mechanism that have asked for help in writing. In Londonderry the brooks and wetlands through the town bring the state environmental department's approvals ahead of the local permit on affected parcels, the airport's approach surfaces reach the northern edge, and the interstate corridor drives a distribution and logistics pipeline larger than the town's residential base suggests.
Londonderry permit costs and fees
Londonderry charges permit fees under the town's published fee schedule, with the Fire Department's permits carrying their own fees and the state's approvals charged by the department issuing them.
| Item | Fee or rule |
|---|---|
| Building permit | Per the town's published fee schedule |
| Fire permits | Oil burner, fire alarm and sprinkler, through the Fire Department |
| Trade permits | Electrical, plumbing and mechanical, by state-licensed tradespeople |
| State permits | Shoreland, wetlands and sewage approvals through the environmental department |
| Planning and zoning | Board application fees where the project reaches them |
| Follow-up inspection | Where framing replacement is discovered during a re-roof or re-side |
A re-roof can become a permit mid-job. Londonderry needs no permit to replace roof shingles or siding provided no structural work is involved. But the town states that if framing is found to need replacement because of moisture damage, a permit and a follow-up inspection are required — a discovery that happens after the covering is off and the crew is on site. Build the contingency into the quote rather than the argument.
Trade permits and who may pull them
Trade work is permitted separately where the municipality enforces, and carried out by tradespeople holding the state licence their trade requires. New Hampshire declines to enforce arc-fault protection beyond the twenty fourteen electrical requirements, whichever edition of the electrical code the state has adopted.
Permit required
- Electrical — by an electrician licensed by the state electricians' board
- Plumbing — by a plumber licensed by the state plumbers' board
- Gas fitting and mechanical — under the state licensing required by RSA 153:27
- Fire protection — under the state fire code, with the fire marshal's review where it applies
Typically exempt
- Arc-fault protection beyond the twenty fourteen electrical requirements, which is not enforced in New Hampshire
- Like-for-like replacement the adopted code places below the permit threshold
How to apply for a Londonderry building permit
Permitting exists locally only where an enforcement mechanism has been adopted under RSA 674:51; the code applies either way.
A local amendment is unenforceable unless the Building Code Review Board has confirmed it, and the board publishes what it confirms.
Shoreland, wetlands and subsurface sewage approvals come from the environmental department, not from the town.
Electricians, plumbers and gas fitters are licensed by the state; there is no general contractor licence, and the contractor carries the compliance duty.
The code in effect when the application is received governs the whole of the work; during a concurrency period elect one edition, not a blend.
Footing to final with the trades on their own permits, then the certificate of occupancy.
Review, corrections and what actually causes delay
The Building and Zoning Enforcement division reviews for the state building code and the town's zoning, with the Fire Department reviewing its own permits. What delays a Londonderry project is a submission emailed rather than filed, a fire permit that missed both weekly windows, and an unanticipated framing replacement on a re-roof.
Inspections in Londonderry
Where the municipality enforces, inspections follow the code's sequence — footing, foundation, framing, rough trades, insulation and final — requested from the building official by permit number, with the trades inspected on their own permits and a certificate of occupancy at the end. Where the State Building Permit Program covers the work instead, inspections are booked with the State Fire Marshal's office at least forty-eight hours ahead, non-compliant work draws a written order to correct, and the re-inspection carries its own fee. Londonderry inspections are arranged by contacting the office against the permit number, with each trade inspected on its own permit and a follow-up inspection where framing replacement has been required mid-job.
Londonderry permit search and official resources
- Londonderry Building and Zoning Enforcement — the fire permit windows, the filing rules and the fee schedule
- New Hampshire State Building Code — the adopted editions and the statewide amendments
- RSA chapter 155-A — the statute on the code, permits, enforcement and appeals
- New Hampshire State Building Code — the adopted editions, the amendments and RSA 155-A
- State Building Permit Program — the fire marshal's permits, inspections and certificates where a municipality does not enforce
- RSA chapter 155-A — the statute on the code, permits, enforcement and appeals
Frequently asked questions
Who issues building permits in Londonderry?
The town's Building and Zoning Enforcement division at 268B Mammoth Road. No New Hampshire county issues building permits in practice.
Can I email my permit application?
No. The town does not accept permit submissions by email. Some permits go through the online portal; all others are submitted in person or by post.
When are fire permits issued?
Oil burner, fire alarm and sprinkler permits are issued at the Fire Department, 280 Mammoth Road, on Mondays from one to four and Thursdays from half past eight to noon.
Do I need a permit to replace shingles or siding?
Not provided no structural work is involved. If framing is found to need replacement because of moisture damage, a permit and a follow-up inspection are required.
Which code applies?
The New Hampshire State Building Code — the twenty twenty-one international codes with the twenty eighteen energy code and the twenty twenty-three electrical code, in force since the first of July twenty twenty-four.
Who do I call with a zoning or health question?
The permit technician on the division's main line handles building, health and zoning questions alike.
Simplify Londonderry permitting with Alliance Permitting
Londonderry runs on two weekly windows and a closed inbox. We book the fire permits into the right window, file the way the town accepts, and price the framing contingency into a re-roof.
Ready to break ground in Londonderry sooner?
Send us the scope and the parcel. We confirm the review path with the Londonderry Building and Zoning Enforcement Division, assemble the submittal, file it, and track it through issuance — corrections included.
More New Hampshire permitting guides
More New Hampshire permitting guides
This guide is provided by Alliance Permitting for general information about Londonderry permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.