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Salem, NH Zoning Regulations & Building Permits

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Key Zoning Facts

Planning Department
Salem Planning Department(603) 890-2090
Building Code Edition
NH State Building Code (IBC/IRC based)
ADUs Allowed
Yes
Primary District
R Residential
Max Height
35 ft

Salem Zoning Overview

Salem is a town in Rockingham County, New Hampshire, with a population of approximately 30,362 (2020 Census). Located on the Massachusetts border, Salem is one of the larger towns in the state and a significant commercial center. Land use and development are regulated through the town's zoning ordinance, administered by the Salem Planning Department.

Salem's zoning ordinance divides the town into several districts, including a residential zone, a residential-industrial zone, a commercial-business zone, and an industrial zone. The R district requires 30,000 sq ft minimum lots.

Key Zoning Districts

Salem's primary zoning districts include:

  • R (Residential) — Minimum 30,000 sq ft lots with 35 ft front, 15 ft side, and 25 ft rear setbacks. Maximum height of 35 ft.
  • R-I (Residential-Industrial) — Mixed residential and light industrial district with 20,000 sq ft minimum lots.

Commercial and industrial districts include:

  • CB (Commercial-Business) — General commercial and business district for retail, office, and service uses
  • I (Industrial) — Manufacturing, warehousing, and related industrial uses

ADU Regulations (Accessory Dwelling Units)

New Hampshire state law (RSA 674:72-73) requires all municipalities to allow ADUs (Accessory Dwelling Units) as a matter of right on any property with a single-family dwelling. Salem must comply with this state mandate. Key points:

  • One ADU is permitted per single-family lot
  • The ADU may be attached to or detached from the primary dwelling (subject to local standards)
  • Municipalities cannot prohibit ADUs but may adopt reasonable regulations regarding size, parking, and other dimensional standards
  • Contact the Salem Planning Department for the town's specific ADU application requirements and any local dimensional standards

Building Code

Salem follows the NH State Building Code (RSA 155-A), which is based on the International Building Code (IBC) and International Residential Code (IRC). All construction must comply with the state building code.

Development Process

Development in Salem generally requires obtaining the appropriate permits from the town's planning and building departments. The process typically involves:

  1. Zoning Verification — Confirm that your proposed use is permitted in the applicable zoning district
  2. Site Plan Review — For commercial, multi-family, and certain other projects, submit a site plan to the Planning Board
  3. Building Permit — Apply for a building permit with construction documents
  4. Inspections — Schedule required inspections during construction
  5. Certificate of Occupancy — Obtain final approval before occupying the structure

For projects that do not conform to existing zoning, property owners may need to seek a variance or special exception from the Salem Zoning Board of Adjustment (ZBA).

Key Considerations

Before starting any development project in Salem, property owners should:

  • Verify the zoning classification of their property
  • Review setback, height, and lot coverage requirements for the applicable district
  • Check for any overlay districts or special regulations
  • Determine if the property is in a flood zone using FEMA's flood map service
  • Confirm whether HOA covenants or deed restrictions apply
  • Contact the Salem Planning Department at (603) 890-2090 for pre-application guidance

Disclaimer: This guide provides general information about zoning in Salem, NH and should not be relied upon as legal advice. Zoning codes are subject to change. Always verify current regulations with the Salem Planning Department before making development decisions.

Regulatory Layers That Apply in Salem

Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.

Federal

State — New Hampshire

  • Building Code: NH State Building Code (RSA 155-A)
  • State ADU Override: Yes (NH RSA 674:72-73 requires municipalities to allow ADUs)
View New Hampshire zoning overview

County — Rockingham County

  • Role: Property records, tax assessment

City / Municipal

The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.

Overlay Districts

No overlay districts identified.

Private Restrictions

  • HOA / CC&Rs common: Yes
  • Check HOA CC&Rs and deed restrictions for additional requirements.

Primary Zoning Districts

RResidential
Min Lot
30,000 sq ft
Max Height
35 ft
Front Setback
35 ft
Side Setback
15 ft
Rear Setback
25 ft
R-IResidential-Industrial
Min Lot
20,000 sq ft
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
CBCommercial-Business
Min Lot
Varies
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
IIndustrial
Min Lot
Varies
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies

ADU Rules in Salem

ADUs:Allowed

Permit Costs & Timelines

Permit Costs & Timelines

Specific permit fee schedules for Salem are available from the local planning department. Fees vary based on project type, scope, and valuation.

Check Salem permit fees →

Official Sources

Frequently Asked Questions

What zoning district is my property in Salem?
Contact the Salem Planning Department at (603) 890-2090 or visit the town website to determine your property's zoning district.
Can I build an ADU in Salem?
Yes. New Hampshire state law (RSA 674:72-73) requires all municipalities, including Salem, to allow one ADU on any lot with a single-family dwelling.
What building code does Salem follow?
Salem follows the NH State Building Code (RSA 155-A), which is based on the International Building Code (IBC) and International Residential Code (IRC).
Do I need a permit for home improvements in Salem?
Most structural modifications, additions, and changes of use require a building permit. Contact the Salem building department for specific requirements.