Off-Grid Living in Tamworth, New Hampshire

I'll be upfront: Tamworth, New Hampshire is one of the more unusual towns I've researched, because it doesn't have a comprehensive zoning ordinance at all. Instead of the typical district map you'd see elsewhere, the town relies on a handful of narrow, targeted ordinances, a Floodplain Development Ordinance, a Groundwater Protection Ordinance, a Personal Wireless Service Facility Ordinance, a Noise Ordinance, and a Racetrack Ordinance, plus subdivision regulations. That's confirmed on the town's own Ordinances page. What this means practically is that raw land use in Tamworth isn't governed by "residential vs. agricultural vs. commercial" zones the way most towns work; it's governed by these specific rules plus whatever the Planning Board requires for subdivisions.

Because there's no zoning code, I couldn't find a Tamworth-specific ordinance addressing tiny homes, RVs as dwellings, or accessory dwelling units. That's a gap worth confirming directly with the Select Board or Planning Board before you commit to a plan, since "unzoned" doesn't always mean "unregulated."

On building, Tamworth doesn't run a conventional permit-and-inspection department. It has what's called a Building Notification system, along with a Building Notification Ordinance and a separate "Building Requirements" document, both listed on the town's downloadable files page. The state building and fire code, adopted under state law, still applies as the substantive baseline, but Tamworth handles the local enforcement side through this notification approach rather than full plan review.

Septic is where state authority takes over. Any individual sewage disposal system in New Hampshire, including in Tamworth, has to be designed by a New Hampshire DES-permitted designer and approved by the Subsurface Systems Bureau. On top of that, Tamworth layers its own Groundwater Protection Ordinance, with homeowner best-management-practices guidance, onto siting decisions. If your water supply comes from a well, state rule requires a wastewater disposal system to go with it. Rainwater harvesting and greywater reuse don't have a specific Tamworth ordinance that I could locate, so those fall back to whatever the state plumbing and DES rules say, and I'd treat this as unconfirmed until you ask directly.

Private wells fall under the state Water Well Board, and I didn't find a standalone Tamworth well ordinance, though the Groundwater Protection Ordinance likely factors into siting near your septic system. On off-grid living generally, I didn't find any Tamworth rule forcing mandatory hookup to municipal utilities for unconnected properties, but if you have a well, state DES rules require an approved septic system to go with it, so full "no water, no waste system" off-grid isn't really contemplated by current rules.

Bottom line: Tamworth's lack of zoning gives you more flexibility than most towns, but the patchwork of special ordinances plus state septic and building code baselines means you still need to check in before you build.