Building Permit Information


Please be advised that effective immediately, all permits for gas piping, fuel tanks, fuel burning equipment (fireplaces, furnaces etc.) must be applied for in-person at Town Hall.

Many of our construction related permit applications can be applied for and submitted through our Online Permit Application Center by clicking here.

Permits are required in the Town of Amherst for all new construction, additions, remodels, sheds, decks, porches, new and replacement septic systems, swimming pools, signs, roofing and most  other improvements.

Building permit applications are processed as quickly as possible, however, many factors play a role into the length of time a permit application takes. Accuracy and completeness of information have a major effect on application review time, as well as the fluctuations in the seasonal workload.  Permit applications with incomplete or missing information only delay an approval process.  Good project planning is the best way to assure your permit will be ready when you are.  Permit applications are available anytime so there are no restrictions against applying for a permit months in advance of your project. All permit fees must be paid prior to the Building Official reviewing or approving a permit. 

Electrical, plumbing and mechanical permits may be issued as a Permit On Demand, provided the work is not part of a project that requires a building permit. When a building permit is required for a project any mechanical system permit will not be issued until the building permit has been issued.
Please be advised that per NH law, RSA 676:13, the Building Official has 30 days for completed residential applications or 60 days for completed commercial applications to either approve or deny any permit application. No work can begin without an approved building permit.

Click here for other Plainning and Zoning related forms, permits and for our fee information.