Do You Need a Fence Permit in NH? A Town-by-Town Guide

New Hampshire does not have a statewide fence permit requirement. Permitting is entirely at the local level, which means the rules in Nashua are different from the rules in Bedford, which are different from the rules in a small town with no zoning enforcement at all. Before you start any fence project, you need to know what your specific town requires.

The General Rule in Most NH Towns

In most Southern NH municipalities, residential fences 6 feet or shorter on non-front-yard property lines do not require a building permit. However, almost every town has setback requirements, height restrictions by yard location (front vs. back), and sometimes HOA overlay restrictions that operate independently of the town permit system.

Where Permits Are Commonly Required

• Pool barrier fences: virtually always require a permit and inspection regardless of height
• Fences over 6 feet: most towns require a zoning or building permit
• Front yard fences: many towns have strict height limits (4 feet is common) and sometimes prohibit solid privacy fences in front yards entirely
• Commercial properties: typically require permits for any fence installation
• Fences within road right-of-way setbacks: requires special approval

Town-by-Town Snapshot

This is a general overview — always verify with your town's building or zoning department before starting:

• Nashua: No permit required for residential fences ≤6 feet on rear/side lots. Front yard fences limited to 4 feet. Pool barriers require permit + inspection.
• Manchester: Similar to Nashua — ≤6 feet rear/side = no permit. Check with Manchester Planning for front yard restrictions.
• Bedford: Has specific setback requirements from property lines. Pool barriers strictly enforced. Recommend calling Building & Zoning before any install.
• Hudson: No permit required for standard residential fences. Pool barriers require permit.
• Merrimack: No permit for standard residential fences ≤6 feet. Front yard height limits apply.
• Londonderry: Review town zoning ordinance. HOA restrictions common in many developments.
• Derry: No permit required for standard residential privacy fences. Pool barriers require permit.
• Salem: Permit required for pool barriers. General fences: verify with Building Department.
• Windham: Many neighborhoods have HOA restrictions that are stricter than town code. Check both.
• Exeter/Dover/Portsmouth: More active building departments — call before installing anything.

What Happens If You Skip the Permit

For general residential fences in most of these towns, the practical risk of skipping a permit (when one isn't required) is zero — because no permit is required. But if you install a pool barrier without a permit, or put up a 7-foot fence in a town where anything over 6 requires approval, you risk a stop-work order, a requirement to remove and reinstall the fence, and potential fines.

The more serious risk: if a child is injured at a non-compliant pool barrier and the barrier was installed without a permit, you have a significant liability exposure.

HOA Rules Are Separate from Town Permits

If you live in a planned development or any neighborhood with a homeowners association, the HOA's covenants, conditions, and restrictions (CC&Rs) control fence style, height, material, and color — independently of anything the town says. HOA rules are often stricter. Always check with your HOA board and get written approval before installing. We've seen homeowners get forced to remove brand-new fences because they got town approval but forgot about their HOA.

Before You Call a Contractor

1. Call your town's building or zoning department — ask specifically about fence height limits by yard location and whether a permit is required for your project
2. Pull your deed and survey — know where your property lines actually are before installing
3. Check your HOA documents if applicable
4. For pool barriers, always pull a permit and schedule inspection