On this page 6
§ 02
When a permit is required
Permit triggers and exempt work for Farmington
New construction, additions, alterations, demolition, and any trade work (electrical, plumbing, gas, HVAC); each trade requires a separate permit with a licensed technician.
Roofing or siding replacement
Replacement windows or doors (exact same size only)
Sheds under 120 sq ft (10x12) if setback requirements are met
Fencing 7 feet and under (finished side must face neighbor; fence must be on property line)
Retaining walls under 4 feet
- Exempt Roofing or siding replacement
- Exempt Replacement windows or doors (exact same size only)
- Exempt Sheds under 120 sq ft (10x12) if setback requirements are met
- Exempt Fencing 7 feet and under (finished side must face neighbor; fence must be on property line)
- Exempt Retaining walls under 4 feet
Required documents
- Material list
- Cost of construction
- Site plan
- Floor plans
- Building code
- NH State Building Code (RSA 155-A) with International Codes and NH amendments.
- Contractor requirements
- All electrical, plumbing, gas, and mechanical work requires a valid NH state license.
§ 03
Application process
Typical processing: Up to 30 days
- 01 Download the Major or Minor Building Permit Application from the Planning and Community Development page.
- 02 Complete the application with material list, cost of construction, and project description.
- 03 Email or bring in the application; trade permits (electrical, plumbing, gas, HVAC) must be obtained separately.
- 04 All trade technicians must have a valid NH state license.
- 05 Allow up to 30 days for processing; additional time if application is incomplete.
- 06 Building Inspector reviews; inspections must be scheduled at least 48 hours in advance.
- 07 Rough-in inspection before any work is covered; final inspection when complete.
- 08 Permit issued; post on job site.
Typical processing time: Up to 30 days
Source: Planning and Community Development / Code Enforcement ↗
§ 04
Fee schedule
Farmington building permit fees
Fee type
Amount
01
Minimum permit fee
$100.00
02
Plan check fee
Included in permit fee
03
Permit fee formula
$7.50 per $1,000 of construction value plus $100.00 base fee; valuation calculated at $70/sq ft (residential livable), $35/sq ft (non-livable), $20/sq ft (porches, decks, sheds).
Contact the department.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- (603) 755-2774 (phone)
- Scheduling deadline
- At least 48 hours notice required
- Inspection hours
- Monday-Friday 8:00 a.m. to 5:00 p.m. (Building Inspector in and out of office; schedule in advance)
Typical sequence: Rough-in inspection before work is covered; final inspection when all work is complete; reinforcing steel inspection before concrete placement.
§ 06
Frequently asked
Common questions about Farmington permits
01 Do I need a building permit in Farmington, NH? ▸
New construction, additions, alterations, demolition, and any trade work (electrical, plumbing, gas, HVAC); each trade requires a separate permit with a licensed technician.
02 How much does a building permit cost in Farmington, NH? ▸
Building permit fees in Farmington, NH are set by the local building department and vary by project type and valuation. The minimum permit fee is $100.00. Fees are calculated as: $7.50 per $1,000 of construction value plus $100.00 base fee; valuation calculated at $70/sq ft (residential livable), $35/sq ft (non-livable), $20/sq ft (porches, decks, sheds).. Plan check fee: Included in permit fee.
03 How do I apply for a building permit in Farmington, NH? ▸
To apply for a building permit in Farmington, NH, follow these steps: 1. Download the Major or Minor Building Permit Application from the Planning and Community Development page. 2. Complete the application with material list, cost of construction, and project description. 3. Email or bring in the application; trade permits (electrical, plumbing, gas, HVAC) must be obtained separately. 4. All trade technicians must have a valid NH state license. 5. Allow up to 30 days for processing; additional time if application is incomplete. 6. Building Inspector reviews; inspections must be scheduled at least 48 hours in advance. 7. Rough-in inspection before any work is covered; final inspection when complete. 8. Permit issued; post on job site.
04 How long does it take to get a building permit in Farmington, NH? ▸
Building permit processing times in Farmington, NH typically run Up to 30 days. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in Farmington, NH? ▸
Not all construction work requires a permit in Farmington, NH. The following work is generally exempt: Roofing or siding replacement; Replacement windows or doors (exact same size only); Sheds under 120 sq ft (10x12) if setback requirements are met; Fencing 7 feet and under (finished side must face neighbor; fence must be on property line); Retaining walls under 4 feet. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in Farmington, NH? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Farmington, NH via: (603) 755-2774. At least 48 hours notice required.
last verified April 2026
source Planning and Community Development / Code Enforcement ↗
entry id permits/new-hampshire/strafford/farmington
Educational reference. Permit rules and fees change — confirm current requirements directly with Planning and Community Development / Code Enforcement before applying. Jaspector is not legal advice.