Building Safety in Nashua, NH: What Residents Actually Need to Know

If you live in Nashua or are thinking about moving there, building safety are one of those things you probably won't think about until they affect you directly. Nashua has 8 specific rules on the books covering different aspects of building safety, and some of them might surprise you.

Electrical Permits

Nashua adopts NFPA 70, the National Electrical Code, and requires a paid permit with a $50 review fee before any electrical work begins.

Key details: Adopted code: NFPA 70 (National Electrical Code). Application/review fee: $50, nonrefundable. Unpermitted work surcharge: 100% of fee, up to $275. Reinspection fee: $75. Administering department: Department of Building Safety.

Working without a paid, issued permit triggers a surcharge of 100% of the applicable fee, capped at $275 for residential electrical work; reinspection after a failed inspection costs an added $75.

Green Building Code

Nashua has no mandatory green building code, but it cuts the building permit fee for LEED-certified projects: 5% off for standard certification, scaling up to 20% off for platinum.

Key details: LEED standard certification: 5% fee discount. LEED silver certification: 10% fee discount. LEED gold certification: 15% fee discount. LEED platinum certification: 20% fee discount. Applies to: building permit fee only.

Not a mandate: no project is required to pursue LEED certification. Skipping certification just means paying the full building permit fee; it triggers no penalty. Building without any required permit remains subject to Chapter 105's standard permit enforcement.

Nashua is more permissive than most cities when it comes to green building code. That said, there are still limits.

Fire Sprinkler Requirements

Nashua's Housing Standards Code requires a full water sprinkler system throughout any structure with 12 or more dwelling units where at least one unit sits entirely above the second floor, installed to Building Code standards and kept up under the Fire Prevention Code.

Key details: Trigger: 12+ units, one above 2nd floor. Effective date: January 1, 1992. Installed to: City Building Code standard. Exempt: 1-2 family homes, townhouses (§156-14).

Enforced as a Housing Standards Code violation by the Code Enforcement Department; noncompliant buildings can be cited and ordered to install or restore required sprinkler protection.

Childcare Center Rules

Nashua zoning requires child day-care facilities to sit on a collector or arterial street, fence outdoor play areas up to six feet high, and cap outdoor play in residential districts to 9 a.m.-6 p.m.

Key details: Principal-use street access: Collector or arterial street required. Outdoor fence height: Up to 6 feet, wood or similar. Home-based care: By right if it meets He-C 4002. Outdoor play hours: 9:00 a.m. to 6:00 p.m. only. State law layered on top: RSA 170-E licensing also applies.

Zoning violations, including breaches of the day-care facility standards, are enforced by the Administrative Officer under RSA 676:11 through 676:13 and 676:15 through 676:19, not a fixed city fine schedule.

Door Locking Hardware

Nashua's Housing Code requires dwelling-unit door locks to be kept in good repair and able to tightly secure the door, and requires every exit door to open from the inside without needing a key.

Key details: Governing law: Housing Code § 182-28(J), (L). Enforcing agency: Code Enforcement Department. Exit door rule: No key needed to exit. Penalty basis: City Code § 1-12, daily offense.

Violations are punished as provided in City Code § 1-12, and every day a violation continues after notice has been served counts as a separate offense; the Code Enforcement Department may issue citations or refer the matter for prosecution.

Building Permits

Nashua requires a building permit before any reroofing job starts, and the Department of Building Safety won't issue one until fees are paid. Commercial reroofing other than asphalt shingles is billed at $0.65 per $100 of construction cost.

Key details: Permit required: Yes, before reroofing work begins. Non-asphalt commercial fee: $0.65 per $100 of cost. Enforcing agency: Department of Building Safety. Historic District: same-plane reroof skips HDC review.

Reroofing without the required permit, or work that departs from approved plans or a Building Official directive, is a violation of Chapter 105 subject to NRO Chapter 74 penalties and RSA 676:15-17-b, in addition to any other remedy available to the City.

Lead Paint

Nashua extends the state's lead-paint abatement notice period from 30 to 75 days under its own ordinance, adopting RSA 130-A citywide and enforcing it through the Code Enforcement Department.

Key details: Notice period: 75 days (extended from state's 30). State law adopted locally: RSA 130-A. Enforcing agency: Code Enforcement Department. Local ordinance: § 182-44, adopted 1990.

Failure to abate a cited lead paint hazard within the seventy-five-day notice period exposes an owner to enforcement under RSA 130-A as locally applied, pursued through the City's Code Enforcement Department.

Plumbing Permits

Nashua adopts the International Plumbing Code as its city Plumbing Code, administered by the Department of Building Safety, with local amendments covering fees, sewer depths, and water temperature limits.

Key details: Code adopted: International Plumbing Code, 2021 amendments. Enforcing agency: Department of Building Safety. Building sewer depth: 36 in. septic / 48 in. other. Water heater temp: Min. 140°F; fixtures capped at 130°F. Permit required: Yes, before plumbing work begins.

Violating the Plumbing Code or permit terms is enforced under NRO Chapter 74 and RSA 676:15-17-b, without limiting any other remedy available to the City at law or equity.

The Bottom Line

Nashua's building safety rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Nashua is broadly strict or permissive.

This guide is based on Nashua's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.