Off-Grid Living in Wentworth, New Hampshire

Wentworth is one of the handful of New Hampshire towns that hasn't adopted a conventional zoning ordinance. I dug through the Town's own Planning Board page and didn't find a zoning district map or use table anywhere. That doesn't mean anything goes, though. Wentworth uses its Subdivision Regulations, administered by the Planning Board, as the main tool for controlling how land gets used, and it also enforces FEMA floodplain rules. If you're carving off a new lot, expect a one-acre minimum and a one-dwelling-per-lot limit under those subdivision regs. If you want a second, smaller dwelling on an existing lot without subdividing, there's a Detached Accessory Dwelling Unit path, but the Planning Board has to approve it first.

Building permits are handled locally, and the Select Board reviews septic plans for any occupied dwelling, in addition to driveway permits. On septic itself, New Hampshire state law is the backbone here: any system serving an occupied structure needs a design by a state-licensed septic designer, and before installation, replacement, or expansion, the NH Department of Environmental Services' Subsurface Systems Bureau in Concord has to sign off. Wentworth layers its own review on top through the Select Board, and the Planning Board may also weigh in if a subdivision or Detached ADU is part of the picture, but ultimate state approval still runs through DES.

I couldn't find anything on Wentworth's official pages addressing tiny homes or RVs as permanent dwellings, greywater reuse, or rainwater harvesting specifically. Those gaps are worth calling the Town about directly rather than assuming they're unregulated, since state plumbing and residential code provisions can still apply even without a town-specific rule.

On wells, there's no separate Wentworth well ordinance that I found, but state rule matters a lot here: NH DES requires that any structure connected to a water supply also be connected to a wastewater disposal system, whether that's a sewer connection or an individual septic system. In practice, that closes off the option of having a well without also having an approved septic system for an occupied structure. I didn't find an explicit town-level ban on going off-grid from public utilities, but that state water-to-wastewater linkage effectively limits how "disconnected" you can be if you're using a private well.

Bottom line: Wentworth's light-touch zoning gives you more flexibility than many towns, but the subdivision rules, floodplain rules, and state septic/water requirements are real constraints. Confirm anything not spelled out here directly with the Select Board or Planning Board before you buy land or start building.