Zoning › State overlays › New Hampshire

New Hampshire State overlays

All 9 tracked preemption laws for New Hampshire.

Overview

All tracked preemption laws for New Hampshire. Click any law for its trigger predicate, preempted fields, and source citation.

Laws tracked
9
Preempted fields
24
Required city attrs
13
Last reviewed
2026-05-20
Zoning wiki for New HampshireBuilding codes for New HampshireFilter all preemptions by NHFederal overlaysState overlays atlasGlossary

Tracked laws

NH HB 631 / Chapter 201 (2025) — Multifamily / Mixed-Use By Right on Commercial Land3 fields
Effective
2026-07-01
Authority
state · scope: state:NH
ID
NH_HB631_CH201_MF_ON_COMMERCIAL
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NH RSA 674:72 — Accessory Dwelling Units (HB 577 / Chapter 197 Rewrite)6 fields
Effective
2025-07-01
Authority
state · scope: state:NH
ID
NH_RSA_674_72_ADU_MANDATE
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NH RSA 674:71 / 674:58–61 — Workforce Housing Reasonable Opportunity Mandate3 fields
Effective
2010-01-01
Authority
state · scope: state:NH
ID
NH_RSA_674_71_WORKFORCE_HOUSING
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NH RSA 483-B — Shoreland Water Quality Protection Act3 fields
Effective
1991-07-01
Authority
state · scope: state:NH
ID
NH_RSA_483_B_SHORELAND_PROTECTION
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Pease ANG (Air National Guard) AICUZ — Federal Airspace and Noise Overlay2 fields
Effective
1991-04-01
Authority
federal · scope: state:NH
ID
NH_PEASE_ANG_AICUZ
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NH RSA 674:32 — Manufactured Housing Anti-Exclusionary Mandate2 fields
Effective
1988-01-01
Authority
state · scope: state:NH
ID
NH_RSA_674_32_MANUFACTURED_HOUSING
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NH RSA 675 — Procedure for Adoption of Zoning, Subdivision, and Site-Plan Regulations2 fields
Effective
1983-01-01
Authority
state · scope: state:NH
ID
NH_RSA_675_PROCEDURE
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Hubbard Brook Experimental Forest — USFS Research Watershed Carve-Out1 field
Effective
1955-01-01
Authority
federal · scope: state:NH
ID
NH_HUBBARD_BROOK_RESEARCH_WATERSHED
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White Mountain National Forest — Federal Land Carve-Out (USFS)2 fields
Effective
1918-05-16
Authority
federal · scope: state:NH
ID
NH_WHITE_MOUNTAIN_NATIONAL_FOREST
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Required city attributes

Required city attributes

The evaluator needs these city-level facts present to resolve whether a given law's predicate fires.

  • population
  • county_population
  • governance_form
  • is_within_census_urban_area
  • has_municipal_water_service
  • has_municipal_sewer_service
  • workforce_housing_majority_residential_5plus_mf
  • adu_ordinance_conformance_674_72
  • manufactured_housing_conformance_674_32
  • within_shoreland_protection_zone
  • within_white_mountain_national_forest
  • within_pease_aicuz
  • within_hubbard_brook_research_watershed