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 regulate fence height. Under New Hampshire's home rule structure (RSA Title LXIV), fence height is set by each municipality's zoning ordinance under RSA 674:16-21. Nashua's Land Use Code Section 190-44 generally caps residential fences at 7 feet (with up to 14 feet allowed adjacent to the F.E. Everett Turnpike, requiring a building permit above 7 feet). Manchester sets fence rules in Chapter 155 (Zoning) - check your specific zoning district. State law RSA 473:1 also governs partition fences between abutting parcels.
2 cities in Hillsborough County have their own fence regulations rules. Each link goes to that city's dedicated page with code citations.
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Hillsborough County Ordinance Hub →