Building Permit Fees in Nashua, NH (2026)

What common projects cost

Kitchen or bath remodel

$25,000 value, remodel 300 sq ft

$89.00

$39.00 building permit + $50.00 application

Room addition

$75,000 value, addition 400 sq ft

$122.00

$72.00 building permit + $50.00 application

New single-family home

$350,000 value, new single-family 2,400 sq ft

$482.00

$432.00 building permit + $50.00 application

How Nashua calculates your permit fee

The city charges a building permit fee using $0.18 per square foot, plus a $50.00 application fee, with a $30.00 minimum. Electrical, plumbing and mechanical work gets its own permits.

The fee table

Residential 1-2 family/townhouse, new construction and additions

$0.18 per square foot, plus a $50.00 application fee, with a $30.00 minimum.

Residential alterations, repairs, fire damage

$0.13 per square foot, plus a $50.00 application fee, with a $30.00 minimum.

Commercial incl. multifamily, new

$0.28 per square foot, plus a $50.00 application fee, with a $50.00 minimum.

Commercial alterations, repairs, fire damage

$0.18 per square foot, plus a $50.00 application fee, with a $50.00 minimum.

What counts as project value

Floor area (square feet). Building permit fees are per square foot of area affected (aggregate floor area, including basements and future expansion areas). Valuation is used only for 'special construction' not tied to floor area (membrane structures, canopies, towers, commercial reroofing, etc.): $0.65 per $100 of construction or installation cost.

Worked example: a $350,000 new home

Building permit fee: 2,400 sq ft × $0.18 = $432.00
Application fee: fixed = $50.00
Total before trade permits: $482.00.

Fees people miss

May also apply (not in the totals above)

Phased construction surcharge: when phased construction only; $9.75 on the standard projects.
Work started without a permit: when work started before permit issued; $39.00 on the standard projects.

Fee	Amount
Additional plan review, minor modifications / tenant fit-up, residential	$0.10 per sq ft
Additional plan review, minor modifications / tenant fit-up, commercial	$0.15 per sq ft
Moving a building lot to lot	$200.00 each
Certificate of occupancy, existing space/owner change	$50.00 each
Reinspection	$75.00 each
Expedite service	$80.00 per hour per staff member
Planning and Zoning minimum (sheds, decks, commercial fit-up other than change of use)	$25.00 each
Planning and Zoning, residential additions and alterations	$55.00 each
Planning and Zoning, new residential dwelling units (up to and including 3 units)	$240.00 per unit
Planning and Zoning, over 3 units and new commercial	$300.00 each
Planning and Zoning, commercial change of use	$300.00 each
Fire Marshal life safety plan review, up to 5,000 sq ft	$75.00 each

3 more fees

Fire Marshal life safety plan review, 5,001-15,000 sq ft: $200.00 each
Fire Marshal life safety plan review, 15,001-25,000 sq ft: $325.00 each
Fire Marshal life safety plan review, over 25,000 sq ft: $600.00 each

Trade permits are separate. Mechanical: Residential mechanical: $50 application fee plus per-item fees (e.g. furnace/boiler/water heater $45, ductless split $40, A/C condenser $20).

How to apply

Gather your plans and your project's total value and floor area.
Submit to Department of Building Safety.
Pay the permit and plan review fees when invoiced.
Questions: 603-589-3080 · City Hall, 229 Main Street, PO Box 2019, Nashua, NH 03061-2019

Source record

Effective: 2021-03-09
Verified: 2026-11-04
Issuer: Department of Building Safety
Valuation: Floor area (square feet)
Confidence: high

What this page does not cover (4)

Planning & Zoning and Fire Marshal fees come only from the undated simplified fee sheet; their adopting ordinance was not located
Electrical and plumbing fee schedules (ordinance pages 4-7) not extracted; residential mechanical only partly captured
Both PDFs are scanned images. Quotes were transcribed visually from rendered pages, not from a text layer
Check that the 'minimum fee for miscellaneous equipment' ($30/$50) is the general building permit minimum.

Separate electrical, plumbing, mechanical, fire, impact, utility and school fees are usually not included unless they are listed. BuildingPermitCost is not a government permit office, and this is not legal advice.

Report an error · How we verify fees

How Nashua compares

A $25,000 remodel costs $89.00 in Nashua: 77% below the national median of $380.00.

A $75,000 addition costs $122.00 in Nashua: 85% below the national median of $820.58.

A $350,000 new home costs $482.00 in Nashua: 83% below the national median of $2,918.63.

Same standard projects everywhere, including plan review and required surcharges. All New Hampshire places · Compare side by side

Nashua permit fee FAQ

How much is a building permit in Nashua, NH?

A $25,000 remodel: $89.00. A $75,000 addition: $122.00. A $350,000 new single-family: $482.00. These include every fee the schedule applies to that project; trade permits are separate.

Is plan review included in the Nashua permit fee?

Nashua lists no separate plan review fee for these projects.

How does Nashua determine project value?

Floor area (square feet). Building permit fees are per square foot of area affected (aggregate floor area, including basements and future expansion areas). Valuation is used only for 'special construction' not tied to floor area (membrane structures, canopies, towers, commercial reroofing, etc.): $0.65 per $100 of construction or installation cost.

Are electrical, plumbing and mechanical permits included?

No. They are separate permits. Mechanical: Residential mechanical: $50 application fee plus per-item fees (e.g. furnace/boiler/water heater $45, ductless split $40, A/C condenser $20).

When did these Nashua fees take effect?

The schedule is effective Mar 9, 2021 (“§105-28 fee schedule amended 3-9-2021 by Ord. No. O-21-045”). We last checked it against the official source on Nov 4, 2026.