Off-Grid Living in Plaistow, New Hampshire

I've been digging through Plaistow, New Hampshire's official town documents to see what off-grid living actually looks like here, and the short version is: Plaistow is a fully zoned New Hampshire town, and that shapes everything else on this list.

Zoning and raw land. Plaistow has a comprehensive Zoning Ordinance administered by the Planning Board and enforced through a Zoning Board of Adjustment, which handles variances and appeals. The town is broken into residential, commercial, and industrial districts, and the ordinance even has a defined category for an "unimproved lot." That means you can't just buy raw land here and do whatever you like; the district your parcel sits in determines what's allowed.

Dwellings, tiny homes, and RVs. The ordinance defines "Dwelling" and "Principal Building" and treats any dwelling in a residential district as a Principal Building on the lot. I did not find any Plaistow provision that specifically authorizes an RV or a tiny house on wheels as a permanent residence, so I'd call that unconfirmed and worth a direct call to the Zoning office before you commit to that route.

Building permits. Plaistow, following New Hampshire's lead, has adopted the 2021 ICC building codes, and the Department of Building Safety enforces them alongside state RSAs and the local zoning ordinance. Worth noting: homeowners can pull permits and do work themselves only on their primary dwelling, and that excludes pools, spas, and electrical service/meter panel work.

Septic. New Hampshire's Department of Environmental Services handles septic design approval statewide, but Plaistow adds its own layer: the Zoning Official reviews septic system designs before permits are issued. I found nothing town-specific on composting toilets, so ask the Building Department directly if that's your plan.

Greywater and rainwater harvesting. I couldn't locate any Plaistow-specific ordinance covering either one. That likely means you're working from New Hampshire's state plumbing code baseline, but I'd confirm with the Building Department rather than assume.

Wells. Well construction is a state matter handled by New Hampshire's Water Well Board. Plaistow's zoning ordinance does reference the state rule (RSA 485-A:38) that a town can't impose septic requirements stricter than DES's when it comes to accessory dwelling units, and any applicant still has to show adequate water supply and sewage disposal.

Going off-grid entirely. I didn't find a blanket rule saying you must connect to municipal utilities, but the permitting process itself, requiring septic plans and floor plans before a certificate of occupancy, means the town is going to check your sanitation setup regardless of whether you're tied into utility lines.

Bottom line: Plaistow isn't hostile to self-sufficient living, but it's not a loose, anything-goes rural town either. Zoning and building code compliance are real hurdles here, and several details (RVs as dwellings, greywater, rainwater) just aren't spelled out, which means a phone call before you buy or build will save you real headaches.