Nashua, New Hampshire Remodeler Local Permit Ordinances and Codes
Nashua, New Hampshire Municipal Permit Ordinances for Remodelers and Home Renovations
The City of Nashua's Building Safety Department is the Authority Having Jurisdiction (AHJ) for all building permits and renovations within the city. They are located at 229 Main Street, 2nd Floor of City Hall, Nashua, NH 03060, and can be reached by phone at 603-589-3080.
Demolition Permits vs. Residential Building Permits
A demolition permit is required for the complete demolition of a building. For partial demolition involving the removal of structural elements like walls, roof sections, or floors, a standard building permit is necessary. Structures built before 1978 may require an asbestos survey before demolition. Demolition permits are typically based on the square footage of the structure to be demolished, and approval from various city departments and utility companies is required before work can commence.
Converting Non-Living Spaces to Habitable Areas
Converting non-living spaces such as basements or garages into habitable areas requires adherence to specific building codes. For basements, this includes requirements for window glazing area (8% of floor area), natural ventilation (openable area of at least 4% of floor area), emergency escape and rescue openings, smoke and CO detectors, and adequate heating facilities to maintain a temperature of 68°F. Accessory Dwelling Units (ADUs) are also addressed in Nashua's zoning ordinances, with proposed updates aiming to permit ADUs in most residential zoning districts. Existing ADU regulations limit the size to 750 square feet, while proposed changes may allow for up to 1,215 square feet in certain circumstances. The owner must typically occupy one of the units, and new entrances to ADUs generally cannot face the front of the single-family dwelling.
Fee Nuances and Inspection Stages
Permit fees in Nashua are generally based on the project's scope and square footage. There is a standard $50 application fee for most building permits, with additional fees based on the type of project (new construction, alteration, etc.). Separate permits are required for plumbing, electrical, and mechanical work, each with its own fee schedule. Reinspections due to failed initial inspections incur a $75 fee. A surcharge of 100% of the applicable fee (not to exceed $275 or $500 depending on the permit type) is applied for permits issued after construction has already begun without a permit. Phased construction permits may incur a 25% surcharge for each upgrade phase. Inspections are a crucial part of the permitting process, and the Building Safety Department conducts these inspections to ensure compliance with building codes. To request an inspection, you can use an online button, email [email protected], or call 603-589-3080.
Resources to Learn More
Because Nashua is located within Hillsborough County, the following broader county regulations may also apply to your project:
New Hampshire, Hillsborough County Remodeler Permit Regulations and County Ordinances for Unincorporated Areas
Hillsborough County, New Hampshire Remodeling and Renovation Permit Requirements
Hillsborough County, New Hampshire, has specific requirements for remodelers and renovation permits, with the Building & Safety Division acting as the Authority Having Jurisdiction (AHJ) for unincorporated areas. It's crucial for property owners and contractors to understand these regulations to ensure compliance and safety.
Unincorporated Areas
In Hillsborough County, properties located in unincorporated areas fall under the direct purview of the County's Building & Safety Division for permit and inspection requirements. This means that standard municipal building departments may not be the primary point of contact for these locations.
Demolition Work Permits
Demolition work during a remodel in Hillsborough County typically triggers a permit requirement. This is to ensure that demolition is conducted safely, with proper environmental controls (like asbestos abatement if applicable) and structural considerations in place. Specific triggers often include:
- Any demolition that affects the structural integrity of the building.
- Partial or complete demolition of load-bearing walls.
- Removal of more than a certain percentage of the building's exterior.
- Demolition involving hazardous materials.
Converting Non-Living Spaces
Altering or converting non-living spaces such as garages, attics, or unfinished basements into habitable living areas requires specific permits in Hillsborough County. These conversions involve significant changes to the building's structure, electrical, plumbing, and mechanical systems, and must meet current building codes for occupancy.
- Definition of Habitable Space: Generally includes areas designed for living, sleeping, eating, or cooking, requiring adequate light, ventilation, egress, and insulation.
- Permit Triggers: Any work that changes the use of a space from non-habitable to habitable, including adding electrical outlets, plumbing, insulation, or finishing walls and ceilings.
- Code Compliance: These conversions must meet all applicable building, electrical, plumbing, and fire safety codes, including requirements for emergency egress from bedrooms.
Resources to Learn More
The following statewide building codes and regulations apply universally to all jurisdictions within New Hampshire:
New Hampshire Remodeler Legislation, Codes, and Guidelines
New Hampshire Building Codes for Remodelers and Residential Renovations
New Hampshire adopts and enforces building codes based on the International Code Council (ICC) model codes. The primary codes relevant to remodelers and residential renovations are the International Residential Code (IRC) and the International Building Code (IBC), often with state-specific amendments.
1. Adopted State Statutes and Codes
- New Hampshire has adopted the 2018 International Residential Code (IRC) and the 2018 International Building Code (IBC).
- The state also adopts the International Fire Code (IFC) and the International Mechanical Code (IMC), among others.
- While the International Existing Building Code (IEBC) is a model code, New Hampshire's approach to existing buildings is primarily addressed through the adopted IRC and IBC, with specific provisions for alterations, repairs, additions, and changes of occupancy.
- Specific amendments and adopted codes can be found within New Hampshire's state statutes, particularly RSA 155-A.
2. Primary State Board or Agencies
- The **New Hampshire Department of Safety, Division of Fire Safety, Bureau of Building Codes and Standards** is the primary state agency responsible for adopting, administering, and enforcing the state building codes.
- Local building departments within municipalities are typically responsible for plan review, permitting, and inspections for most residential renovations.
3. Classification of Remodels and Demolition Guidelines
- New Hampshire's codes generally distinguish between cosmetic improvements and structural alterations. Cosmetic remodels, such as painting or replacing flooring, typically do not require permits unless they involve changes to electrical or plumbing systems.
- Structural alterations, including the conversion of attics or basements into habitable living spaces, additions, or significant changes to the building's structure or egress, will require permits and must comply with the current adopted codes.
- Demolition guidelines are addressed within the adopted codes, particularly concerning safety during demolition, environmental concerns (like asbestos abatement), and the proper disposal of debris. Specific demolition permits are usually required, and the process often involves notifying utility companies and adhering to local ordinances.
Resources to Learn More
- New Hampshire Department of Safety, Division of Fire Safety, Bureau of Building Codes and Standards: [https://www.nh.gov/safety/divisions/firesafety/building-codes/](https://www.nh.gov/safety/divisions/firesafety/building-codes/)
- New Hampshire Revised Statutes Annotated (RSA) 155-A, Building Codes: [https://www.gencourt.state.nh.us/rsa/html/XII/155-A/155-A-mrg.htm](https://www.gencourt.state.nh.us/rsa/html/XII/155-A/155-A-mrg.htm)