Off-Grid Living in Lyme, New Hampshire

Lyme, New Hampshire is a zoned town, which surprises some people who assume rural Grafton County towns are wide open. I've gone through what the town's Planning & Zoning Administrator's office and NH state law actually say, and here's where things stand as I understand them from official sources.

Lyme has had a formal Zoning Ordinance since 2016, with amendments still coming through as recently as this year, plus separate ordinances for telecommunications, small wind, flood plains, subdivisions, curb cuts, and excavation. On top of the base zoning, the town layers wetland buffers (100 feet, per the town) and the state's Comprehensive Shoreland Protection Act creates a 250-foot regulated zone around the Connecticut River and several ponds in town. If your land touches water, budget extra scrutiny.

For dwellings, tiny houses, and RVs, I have to be honest that I couldn't pin down Lyme's exact ordinance text on this. What I can tell you is New Hampshire state law requires any town with zoning to allow tiny houses as a matter of right wherever single-family homes are allowed, provided the tiny house is hooked to an approved water source (public system or private well) and an approved wastewater system (public sewer or septic). Whether Lyme's ordinance has been updated to spell this out isn't confirmed from what I found, so I'd call the Administrator's office directly before assuming an RV or tiny house is fine to occupy.

Building permits run through the town's Planning & Zoning Administrator, currently David Robbins. The process starts informally there before anything goes to the Planning Board or Zoning Board of Adjustment.

Septic is where the state, not the town, holds the real authority. Any new house or added bedrooms beyond your system's rated capacity requires a state-approved septic design from a licensed designer, and NH DES keeps a roster of those by town. Lyme has no public sewer, so essentially everyone here is on private septic. Composting toilets aren't addressed separately in what I found from the town.

Greywater and rainwater harvesting are both genuinely unclear at the town level. I found no Lyme-specific ordinance on either, and no dedicated New Hampshire DES residential greywater rule surfaced either. Treat both as gray areas and ask before you build a system.

Private wells are clearly an accepted, state-recognized water source, referenced right in the tiny-house statute language. There's no additional town-specific well ordinance I found beyond state well regulation.

Bottom line on going fully off-grid here: structurally it's workable since there's no public water or sewer to hook into anyway, but you still need the town's zoning permit before building and state septic approval before occupying. Disconnection from utilities doesn't mean disconnection from permitting.