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When a permit is required
Permit triggers and exempt work for Amherst
All new construction, additions, remodels, demolition, sheds, decks, porches, new and replacement septic systems, swimming pools, signs, roofs, and other building improvements. No work can begin without an approved permit. Properties in the Historic District may require Historic District Commission approval for exterior work.
Note: No specific exempt work list found on public pages. Note that roofs are listed as requiring permits in Amherst. Contact Building Inspector at (603) 673-6041 ext. 214 for exempt work list.
- Completed application
- Building permit submittal requirements document
- Hazardous material testing results for demolition (required by State of NH)
- Building code
- Effective January 1, 2025: 2021 IBC, 2021 IRC, 2021 IPC, 2021 IMC, 2021 IEBC, 2018 IECC, 2021 ISPS, 2020 NEC (NFPA 70), 2021 Fire Code (NFPA 1), 2021 Life Safety Code (NFPA 101).
- Permit validity
- Not specified; contact department.
- Owner-builder
- Not specified; contact Building Inspector at (603) 673-6041 ext. 214.
- Contractor requirements
- NH state licenses required for electrical, plumbing, and gas work.
Application process
Typical processing: 30 days residential / 60 days commercial per RSA 676:13.
- 01 Contact department at (603) 673-6041 ext. 206 or jyule@amherstnh.gov for current submission procedures.
- 02 Complete building permit application (available at https://www.amherstnh.gov/sites/g/files/vyhlif4116/f/uploads/building_permit_app-complete-oct-2025.pdf).
- 03 Gather required documents per project type.
- 04 Submit application with full payment; permit review will not commence until payment received in full.
- 05 State law: 30 days for completed residential applications; 60 days for completed commercial applications (RSA 676:13).
- 06 Permit issued upon approval; post on job site.
- 07 Schedule inspections during inspection hours (Mon-Fri 10 am - 2 pm).
- 08 Final inspection and certificate.
Typical processing time: 30 days residential / 60 days commercial per RSA 676:13.
Source: Office of Community Development - Building and Code Enforcement ↗
Fee schedule
Amherst building permit fees
Cash, check, debit, or credit card (3% card surcharge); payment required in full before permit review begins
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- (603) 673-6041 ext. 206 (phone)
- Inspection hours
- Monday-Friday 10:00 am - 2:00 pm (inspections); Building Inspector in office Mon-Fri 8 am - 3 pm
Typical sequence: Per project; contact Building Inspector.
Source: Office of Community Development - Building and Code Enforcement ↗
Frequently asked
Common questions about Amherst permits
01 Do I need a building permit in Amherst, NH? ▸
02 How much does a building permit cost in Amherst, NH? ▸
03 How do I apply for a building permit in Amherst, NH? ▸
04 How long does it take to get a building permit in Amherst, NH? ▸
05 How do I schedule a building inspection in Amherst, NH? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Office of Community Development - Building and Code Enforcement before applying. Jaspector is not legal advice.