1 county-level rule, plus city-specific rules for 2 cities in Hillsborough County, New Hampshire.
Verified from official government sources
Hillsborough County does not administer floodplain rules - that authority lies with each city and town and the state. Communities including Manchester, Nashua, Merrimack, Hudson, Litchfield, Lyndeborough, Milford, and Mont Vernon participate in the FEMA National Flood Insurance Program (NFIP). Development in any FEMA Special Flood Hazard Area mapped on the Hillsborough County DFIRM (panel set 33011C) must comply with local floodplain ordinances. Wetland fill or dredge requires a state permit under RSA 482-A.
2 cities in Hillsborough County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Hillsborough County — parking, noise, fences, fires, animals, pools, and more.
Hillsborough County Ordinance Hub →