A building permit for land in Belknap County comes from the city or town where the parcel lies, not from the county. Laconia and most of the towns have a building official or code enforcement officer; Sanbornton and New Hampton issue permits that check zoning and local rules, with no Town code inspection described. The table below gives each office and phone number.
What needs a building permit in Belknap County?
There is no countywide permit list. Each municipality publishes its own threshold, and they differ widely:
- Laconia: sheds of 150 sq ft or more need a permit; normal repairs up to $1,000 of fair market value do not.
- Alton: all new construction including sheds over 120 sq ft and shipping containers, additions, renovations, deck and stair replacement, and repairs that alter structure, plus electrical, plumbing, gas piping, septic, well, pool, sign and demolition work. Siding, roofing and window replacement without structural change counts as maintenance.
- Sanbornton: homes, additions, decks and patios, sheds, garages, barns, solar, docks, inground pools, ADUs, septic systems and signs need an Application to Construct a Structure; fences, retaining walls, wells, hot tubs and aboveground pools do not.
- Center Harbor: a Construction Permit from the Selectmen for all construction, including a septic system, under section 5:1 of the Zoning Ordinance.
Even where no permit is required, structures still have to meet the town’s zoning setbacks. Septic systems need state approval from the NHDES Subsurface Systems Bureau as well as any town permit.
Who issues building permits in each Belknap County town?
All eleven municipalities in the county are listed below, with the office that takes building permit applications.
Short on time to read all of this?
Get a free quote →| Town | Who issues permits | Office and phone |
|---|---|---|
| Alton | Building Department (Code Official): building, electrical, plumbing, gas piping, septic, well, sign and demolition permits; certificates of occupancy | 1 Monument Square; 603-875-2164; Monday to Thursday 7:00 a.m. to 5:30 p.m. |
| Barnstead | Building Inspector | 108 South Barnstead Road; 603-269-4071 ext. 1058 |
| Belmont | Building Department, Building Official | 603-267-8300 ext. 3 |
| Center Harbor | Selectmen, through the Code Enforcement - Building Department (Construction Permit under the Zoning Ordinance) | 36 Main Street; 603-253-4561 |
| Gilford | Department of Planning and Land Use: Building Inspector / Code Enforcement Officer | 47 Cherry Valley Road; 603-527-4727; Monday to Friday 8:00 a.m. to 4:30 p.m. |
| Gilmanton | Building & Code Enforcement, through the Community Development Department | 503 Province Road; 603-267-6700 |
| Laconia (city) | Code Enforcement / Building Department: building, electrical, demolition; Public Works issues plumbing permits | City Hall, 45 Beacon Street East; 603-527-1293 |
| Meredith | Planning & Development Department (Code Enforcement Officer) | 5 Highland Street; 603-677-4215 |
| New Hampton | Board of Selectmen, on the Permitting/Compliance Officer’s recommendation | Selectmen’s Office, 6 Pinnacle Hill Road; 603-744-3559 |
| Sanbornton | Zoning Department (Application to Construct a Structure) | 603-729-8006 |
| Tilton | Land Use office: Code Enforcement Officer / Building Inspector | 603-286-4521 ext. 106 |
Not sure this scope needs a permit?
Get a free quote →Three kinds of town permit in Belknap County
A building official on staff. Laconia, Alton, Gilford, Meredith, Belmont, Barnstead, Gilmanton and Tilton have a building inspector, code official or building official. Center Harbor’s Construction Permit is granted by the Selectmen under its Zoning Ordinance, but the Code Enforcement Officer reviews it within 14 days and the Town lists inspecting construction for compliance with local codes among the officer’s duties. Alton’s office issues the trade permits too, and Gilmanton routes each application through Community Development and a zoning check before its part-time building inspector processes it.
Selectmen’s permit with a compliance review. In New Hampton the Permitting/Compliance Officer reviews the application against local regulations and the Board of Selectmen decides it, within 30 days for most homes and 60 days for non-residential projects or more than 10 dwelling units. The Town says meeting state building and life safety codes is the responsibility of whoever does the work.
Zoning permit. Sanbornton’s building permit, the Application to Construct a Structure, exists to confirm compliance with the Zoning Ordinance; the Town reminds builders that structures must still follow the state building codes.
Building permit fees in Belknap County towns
Each town sets its own fees. These are the figures the towns publish:
| Town | Fee |
|---|---|
| Laconia, new one- or two-family home | $100 application fee + $0.15 per sq ft, plus a $50 certificate of occupancy |
| Meredith, single-family dwelling | $0.25 per sq ft of gross area, basement included |
| Meredith, commercial building | $250 + $0.30 per sq ft |
| Meredith, renovation or accessory structure | $0.15 per sq ft, $40 minimum |
| Meredith, septic system | $50 |
| Center Harbor, new building (attached garage included) | $0.25 per sq ft, $25 minimum (rates as of March 2022) |
| Center Harbor, remodel or deck | $0.15 per sq ft |
| Center Harbor, electrical, plumbing, mechanical/gas or sewage disposal system permit | $50 each |
| Sanbornton, after-the-fact application | Triple the normal permit fee |
| Alton Fire Department, oil burner permit | $30 |
Rather talk it over?
Call 1-855-478-4290 →Payment methods differ too: Alton’s Building Department takes only cash or check, and New Hampton does not accept credit cards.
Electrical, plumbing, gas and heating permits
Where a town has a building office, the trade permits usually come from it: Alton issues electrical, plumbing and gas piping permits, Tilton posts its own electrical and plumbing applications, Gilmanton has electrical, plumbing and a mechanical, gas and chimney permit, Meredith offers a plumbing-HVAC permit and a homeowner self-installation form for electrical and plumbing, and Center Harbor charges $50 each for electrical, plumbing and mechanical/gas permits (mechanical/gas only for licensed installers). Laconia is the exception: plumbing permits come from its Public Works Department and gas and fire system permits from its Fire Department.
Heating equipment often needs a fire department permit as well. Alton’s Fire Department charges $30 for an oil burner permit and $60 for an alarm or sprinkler system, New Hampton requires a Fire Department permit for any fossil fuel or interior wood-fired heating installation, and in Tilton heating appliance permits come from the Tilton-Northfield Fire District.
Rather not deal with the Belknap County building department?
Get a free quote →How to get a building permit in a Belknap County town
Find which of the eleven municipalities the parcel is in; the county has no permit counter.
Setbacks and uses come from the town’s zoning ordinance; Sanbornton’s and Gilmanton’s applications are checked by zoning staff before anything else.
A septic design approved by NHDES and, near a lake, any NHDES shoreland permit.
Online in Laconia, Alton and Meredith; by mail, in person or the drop box in Gilford (no email); by 4:00 p.m. Tuesday for the next Thursday Selectmen’s meeting in New Hampton.
Up to 15 business days in Laconia, two to four weeks in Alton, 14 days in Center Harbor, and up to 30 days for a New Hampton house.
Call the building office for each inspection; Gilmanton asks for at least 48 hours’ notice.
Inspections and occupancy
Inspections are booked with the town office that issued the permit. Gilmanton’s building inspector is part-time, so the Town asks for at least 48 hours for a return call or an inspection and does not offer same-day visits. Alton’s Code Official carries out field inspections at every phase and issues certificates of occupancy, and Belmont’s office issues non-residential certificates of use.
In New Hampton an occupancy permit is required for a new structure, an expansion or change of use, or a substantial improvement, and the Fire Department (603-744-2735) has to inspect and sign it off. New Hampton building permits stay valid for 18 months.
New Hampshire building code
Every building in New Hampshire must meet the state building and fire codes (the 2024 codes since July 2026). Only towns that have adopted an enforcement mechanism issue local permits, and any local amendment must be administrative and confirmed by the state. New Hampshire rules
Belknap County building permit FAQ
Does Belknap County issue building permits?
No. Permits come from the City of Laconia or the town where the property is; the county has no building department.
Want this handled start to finish?
Get a free quote →Who issues building permits in Gilford?
The Gilford Department of Planning and Land Use, 47 Cherry Valley Road (603-527-4727), whose Building Inspector / Code Enforcement Officer handles permits and inspections. Applications are not accepted by email.
Who issues building permits in Meredith?
The Planning & Development Department at 5 Highland Street (603-677-4215). A single-family house costs $0.25 per square foot, basement included.
Does Sanbornton have a building inspector?
Sanbornton’s permit is handled by its Zoning Department (603-729-8006) to confirm compliance with the Zoning Ordinance. The Town tells builders that structures must still follow the state building codes.
How long does a permit take in Belknap County towns?
Laconia says up to 15 business days, Alton two to four weeks, Center Harbor 14 days, and New Hampton’s Selectmen have up to 30 days for most homes.
Do I need a fire department permit for a furnace or boiler?
In several towns, yes: Alton charges $30 for an oil burner permit, New Hampton requires a Fire Department permit for fossil fuel and wood-fired heating, and Tilton’s come from the Tilton-Northfield Fire District.
Official Belknap County permitting resources
These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.
Inspections are where schedules slip.
Get a free quote →- Belknap County: cities and towns
- Laconia: apply for permits
- Alton Building & Code
- Gilford Department of Planning and Land Use
- Meredith Planning & Development
- Gilmanton Building & Code Enforcement
- Center Harbor Code Enforcement - Building Department
- New Hampton building permits
- Sanbornton: Do I Need a Building Permit? (PDF)
- Tilton Land Use office
- NH Department of Environmental Services
- New Hampshire State Building Code, RSA 155-A
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More New Hampshire permitting guides
This guide is provided by Alliance Permitting for general information about Belknap County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.