New Hampshire Coastal Development (2026)

Key Facts

Statute: RSA 483-B
Jurisdiction: 250 feet from waters
Setback: 50 feet typical
Impervious cap: 30%

Full Breakdown

The Shoreland Water Quality Protection Act (RSA 483-B) creates a 250-foot protected shoreland from the reference line of public waters. Within this jurisdiction, NHDES regulates impervious surface limits (generally 30%), vegetation removal, septic setbacks, and structural setbacks (typically 50 feet). A Shoreland Permit from NHDES is required for most new structures, expansions, and significant tree cutting in the buffer. The Act sets minimum standards; municipalities may adopt stricter shoreland rules but cannot weaken state thresholds. The Act covers coastal Rockingham County waters in addition to inland lakes and rivers.

Violations & Penalties

Violations carry administrative fines up to $2,000 per day, mandatory restoration of vegetative buffers, and possible removal of unpermitted structures.

Frequently Asked Questions

What waters are protected under the Shoreland Act?

The Atlantic Ocean, lakes and ponds 10 acres or larger, fourth-order and higher streams, and designated rivers fall under RSA 483-B's 250-foot protected shoreland jurisdiction.

Can I cut trees in the protected shoreland?

Limited cutting is allowed under a point-based grid system within the waterfront buffer. Significant clearing requires a shoreland permit and replanting may be required.

New Hampshire Shoreland Water Quality Protection Act