A Resident's Guide to Nashua's Local Ordinances

Nashua, New Hampshire may not be the biggest city in the state, but it has its own set of local rules that residents need to follow. With 106 tracked ordinances across 23 categories, there is more here than you might expect.

Noise Ordinances

Aircraft Noise: Aircraft-in-flight noise is preempted by the Federal Aviation Administration under the Airport Noise and Capacity Act of 1990 (49 U.S.C. 47521 et seq.).

Also covered: Construction Hours (moderate), Quiet Hours (moderate), Barking Dogs (moderate). See the full noise ordinances guide for Nashua for details.

Short-Term Rentals

Taxes & Fees: Short-term rentals in Nashua are taxed solely under the New Hampshire Meals and Rooms (Rentals) Tax in RSA Chapter 78-A. The current rate is 8.5% of the gross rental charge for any accommodation rented for fewer than 185 consecutive days (rate reduced from 9% effective October 1, 2021 by HB2 (2021)).

Also covered: Noise Rules (moderate), Permit Requirements (permissive), Insurance Requirements (permissive). See the full short-term rentals guide for Nashua for details.

Fire Regulations

Outdoor Burning: All open burning in Nashua requires both a city permit from Nashua Fire Rescue under City Code § 110-2 (Chapter 110, Burning, Open) and a written forest-fire-warden permit under RSA 227-L:17 (Woodland Fire Control). The City Forest Fire Warden is the Nashua Fire Chief.

Also covered: Wildfire Zones (permissive), Fire Pit Rules (strict), Fireworks (strict). See the full fire regulations guide for Nashua for details.

Noise from Specific Sources

HVAC & Mechanical Noise: Nashua codifies the only explicit numeric dBA cap in its noise framework for HVAC / mechanical equipment in Chapter 190 (Land Use Code). Mechanical appurtenances (heating and air-conditioning equipment) may be located on the exterior portion of structures, but shall include any necessary sound buffer and/or noise attenuation equipment sufficient to reduce sound levels to 50 decibels daytime (7:00 a.m.

Animal Ordinances

Livestock: NRO § 93-2 prohibits chickens, fowl, sheep, swine, horses, mules, asses, oxen, cows, and other cattle from being at large in any street, alley, or public place. The Nashua Land Use Code (NRO Chapter 190) restricts the keeping of horses, cattle, sheep, swine, and goats to a limited number of zoning districts (typically rural-residential and certain low-density zones - reportedly just two zones citywide).

Also covered: Breed Restrictions (permissive), Wildlife Feeding (moderate), Beekeeping (permissive). See the full animal ordinances guide for Nashua for details.

Parking Rules

Commercial Vehicle Restrictions: Nashua bans on-street tractor-trailer parking citywide. NRO Section 320-67 (Article XII, Parking, Stopping and Standing) provides that 'it shall be unlawful for any tractor-trailer-truck, the tractor alone or the trailer alone to be left parked or stationed at any time, except during the actual loading or unloading of materials therefrom, on any public street or way in the City.' Lighter commercial vehicles are not subject to a citywide weight or length cap, but they are bound by NRO Section 320-78 (no overnight parking 12:00 midnight to 6:00 a.m.

Also covered: Loading Zones (moderate), RV & Boat Parking (strict), Overnight Parking (strict). See the full parking rules guide for Nashua for details.

Outdoor Lighting

Dark Sky Rules: Nashua regulates outdoor lighting through Chapter 190 (Land Use Code), Article IX (Lighting), of the City Code. The intent is to reduce problems created by improperly designed and installed outdoor lighting by limiting total area and total allowable illumination of lots within the city.

Fence Regulations

Pool Barriers: Residential pool barriers in Nashua are governed by the 2021 International Swimming Pool and Spa Code (ISPSC) adopted as the Residential Swimming Pool and Spa Code of the City of Nashua under NRO Sec. 105-25 (Article VII, Chapter 105).

Also covered: Fence Requirements (moderate), Retaining Walls (moderate), Material Restrictions (moderate). See the full fence regulations guide for Nashua for details.

Landscaping Rules

Water Restrictions: Nashua is served by Pennichuck Water Works (Pennichuck Corporation), a publicly owned utility under the Pennichuck East Utility / Pennichuck Water umbrella. Pennichuck enforces a four-level water restriction schedule that operates year-round: Level 1 odd/even house-number lawn watering; Level 2 two assigned days per week between 5:00 a.m.

Also covered: Weed Ordinances (moderate), Grass Height Limits (moderate), Tree Trimming (moderate). See the full landscaping rules guide for Nashua for details.

Invasive Plant Rules

Bamboo Restrictions: Nashua does NOT have a bamboo-specific ordinance. Bamboo is NOT on New Hampshire's Prohibited Invasive Species list (NH Code of Admin.

Tree Protection

Tree Ordinances: Nashua's tree-protection framework rests on four pillars: (1) the Board of Public Works' City Charter authority over all trees standing in streets and public ways; (2) Chapter 190 Article XI (Wetlands) protection of trees in delineated wetlands and buffers; (3) Chapter 190 Article XXVII (Landscaping) requirements for required landscape material on site-plan-approved developments; and (4) the Tree City USA program's tree-care ordinance, per-capita budget, and Arbor Day proclamation. New Hampshire's statewide tree-warden statute is RSA 231:139 (Title XX, Transportation), and public shade-tree protection is governed by RSA 231:139-158..

Also covered: Heritage & Protected Trees (permissive), Tree Removal Permits (moderate), Tree Replacement Requirements (moderate). See the full tree protection guide for Nashua for details.

Environmental Rules

Erosion Control: Erosion and sedimentation control on Nashua construction sites is regulated under Chapter 190 (Land Use), Part 4, Article XXXI (Stormwater Management) and is layered with NHDES Alteration of Terrain (AoT) permitting under RSA 485-A:17 and Env-Wq 1500, plus EPA's Construction General Permit (CGP) for sites disturbing one acre or more. Article XXXI requires erosion and sedimentation controls to be properly installed and to prevent impacts during construction and post-construction land disturbance activities.

Also covered: Flood Zones (strict), Grading & Drainage (strict), Stormwater Management (strict). See the full environmental rules guide for Nashua for details.

Swimming Pools & Spas

Fencing Requirements: Residential pool fencing in Nashua follows the 2021 ISPSC adopted under NRO Sec. 105-25 (per RSA 155-A as updated by HB 1681, effective December 31, 2024).

Also covered: Pool Permits (strict), Hot Tub Rules (moderate), Safety Rules (strict). See the full swimming pools & spas guide for Nashua for details.

Building Setbacks & Zoning

Setback Rules: Nashua Land Use Code Sec. 190-16 (Dimensional Regulations / Dimensional Matrix) sets minimum lot area, frontage, and yard setbacks for each zoning district.

Property Maintenance

Snow & Sidewalk Clearing: Nashua requires property owners to clear snow and ice from sidewalks abutting their property within 24 hours after snow stops falling. Chapter 182 (Housing Standards) Article V states all sidewalks, walkways, steps, and driveways shall be kept free of snow, ice, and other debris hazardous to the public.

Also covered: Vacant Lot Maintenance (moderate), Property Blight (moderate), Trash Bin Storage (moderate). See the full property maintenance guide for Nashua for details.

Home Business

Signage Rules: Nashua Land Use Code Sec. 190-20 limits home occupation signage to a single non-illuminated sign of 2 sq ft or less identifying only the occupant's name and address.

Also covered: Zoning Restrictions (moderate), Home Daycare (moderate), Home Occupation Permits (moderate). See the full home business guide for Nashua for details.

Sign Regulations

Holiday Displays: Nashua does not impose a calendar-based take-down deadline for residential holiday lights or seasonal decorations, and they are not treated as 'signs' subject to Chapter 190 Article X permitting when they convey only a non-commercial holiday message. Practical limits come from Chapter 285 (Streets and Sidewalks) right-of-way obstruction rules and Chapter 182 (Housing Standards) exterior-property-maintenance rules.

Also covered: Garage Sale Signs (permissive), Political Signs (permissive). See the full sign regulations guide for Nashua for details.

Accessory Structures

ADU Rules: Effective July 1, 2025, NH RSA 674:71-:73 (as amended by HB 577) requires Nashua and every NH municipality to allow one accessory dwelling unit (attached or detached) by-right on every single-family lot, with no minimum size below 750 sq ft and a default maximum of 950 sq ft. Nashua's pre-2025 Sec.

Also covered: Garage Conversions (permissive), Carport Rules (permissive), Shed Rules (permissive). See the full accessory structures guide for Nashua for details.

Cannabis Regulations

Home Cultivation: Home cultivation of cannabis — recreational or medical — is prohibited statewide in New Hampshire. New Hampshire is the only state in New England that has not legalized adult-use cannabis: HB 1633 (2024), the most recent legalization vehicle, was killed by the House on June 13, 2024 after a failed Senate compromise.

Also covered: Dispensary Zoning (strict). See the full cannabis regulations guide for Nashua for details.

Trash & Recycling

Pickup Rules & Schedules: Residential trash and recycling collection in Nashua is provided directly by the City of Nashua Division of Public Works, Solid Waste Department — not by a private contractor. Weekly curbside pickup of trash and seasonal soft yard waste serves most residences, and single-stream recycling is collected biweekly on the same day as trash pickup, using an alternating Week A / Week B schedule.

Also covered: Bulk Item Disposal (moderate), Bin Placement Rules (moderate). See the full trash & recycling guide for Nashua for details.

Solar Energy

Panel Permits: Solar PV installations in Nashua require a building permit from the Building Safety Department at Nashua City Hall (229 Main Street) under Chapter 158 (Building Code), Article II, which adopts the New Hampshire State Building Code under RSA 155-A. A separate electrical permit is also required and is reviewed under the National Electrical Code as adopted by the NH State Building Code.

Also covered: HOA Restrictions (moderate). See the full solar energy guide for Nashua for details.

Food Trucks & Mobile Vendors

Food Truck Permits: Operating a food truck in Nashua requires three city authorizations: (1) a Mobile Food Service License from the Nashua Environmental Health Department; (2) a Hawkers and Peddlers Permit from the City Clerk's office; and (3) a fire safety inspection from the Fire Marshal's Office. Vendors must operate from a licensed commissary kitchen.

Also covered: Vending Zones (moderate). See the full food trucks & mobile vendors guide for Nashua for details.

Drone Rules

Recreational Drones: Federal law (FAA Part 107 and 49 U.S.C. § 44809) governs U.S.

What to Do With This Information

Whether you are renting, buying, or renovating in Nashua, knowing the local rules upfront saves headaches later. Dig into the individual ordinance pages linked above for the complete picture, including fines and exemptions.