Off-Grid Living in Boscawen, New Hampshire

Boscawen, New Hampshire is a zoned town, which surprises some people looking to go off-grid in a rural-feeling part of the Merrimack Valley. If you're eyeing land here, don't assume "rural" means "unregulated." I've dug through the town's own documents and the state statutes they operate under, and here's where things stand.

Zoning is real and active. The Boscawen Zoning Ordinance (last major revision March 2023, with more amendments headed to town meeting in 2026) is administered by the Planning Board and a Zoning Board of Adjustment, the latter operating under the state's RSA 674:33. Land is split into districts, including Agricultural-Residential and R2, each with its own rules about density and use. If your plan involves anything unconventional, expect the district table of uses to matter a lot.

Dwellings and ADUs are in flux, in a good way. Boscawen voted in 2024 to allow detached accessory dwelling units, and the town is updating that ordinance again for the 2026 town meeting to match recent state ADU law (RSA 674:71-73). That could open a path for a small foundation-built cabin or tiny home as a secondary dwelling. What I can't confirm is whether a tiny home on wheels or an RV can be a year-round residence outside a formal RV park. The town's documents don't spell that out, so call the Planning & Community Development office before you commit.

Building permits are required, full stop, issued through the town's Building Inspector under Planning & Community Development. Recent planning board decisions also show the town tying building permits to conditions like driveway permits and sewer connection review, at least for subdivided lots, so ask early what applies to your specific parcel.

Septic falls under New Hampshire DES statewide rules (their Subsurface Systems Bureau handles design approval), with Boscawen's own Deputy Health Officer, housed in Planning & Community Development, involved locally. I found no town-specific rule on composting toilets, so that's a "confirm with the health officer" situation, not a green light or a ban.

Greywater and rainwater harvesting: I found no Boscawen-specific ordinance on either. That doesn't mean anything goes, it means the town hasn't published separate rules, so you're likely working from state plumbing code baselines. Worth a direct call to confirm before you build a greywater system.

Wells are permitted at the state level through the NH Water Well Board under RSA 482-B, with the town's building and health offices coordinating during subdivision or building review.

Full off-grid disconnection from utilities isn't explicitly banned in anything I found, but subdivision approvals reference sewer/water connection requirements in specific cases. That suggests it may depend heavily on whether your particular lot has municipal service nearby. This is genuinely a "not fully confirmed either way" situation, so I'd treat it as a case-by-case conversation with the town, not a settled yes or no.