Off-Grid Living in Sugar Hill, New Hampshire

I've been digging through Sugar Hill, New Hampshire's town ordinances and the relevant state rules to see what off-grid living actually looks like here, and the short version is: this is a zoned town, so you can't just buy raw land and do whatever you want with it.

Zoning and land use. Sugar Hill has its own Zoning Ordinance (most recently amended in March 2024), administered by the Zoning Board of Adjustment, plus Subdivision Regulations run through the Planning Board. Lot frontage, setbacks, and permit requirements all apply before you can build or occupy land. If you're picturing a bare-bones off-grid parcel, you'll still need to clear the town's dimensional standards, or seek a variance from the ZBA.

Dwellings, tiny homes, RVs. The ordinance defines "Motor Home" as a temporary, portable dwelling, which strongly suggests RVs and similar structures are treated as temporary lodging, not year-round residences. A foundation-built tiny home would go through the normal building permit and zoning review. I didn't find anything in my research addressing accessory dwelling units or tiny-home-specific rules directly, so I'd call this "not confirmed" and worth a direct question to the town.

Building permits. The Town of Sugar Hill issues its own building permits, but the underlying code is set by the State of New Hampshire, which adopted the 2021 International Residential Code for new construction and remodels starting July 2024. Permits reportedly expire if work hasn't started within twelve months of issuance, per the town's building permit instructions.

Septic and toilets. There's no separate Sugar Hill septic ordinance that I found. This is entirely state territory: NH DES's Subsurface Systems Bureau requires an approved septic system (ISDS) for any structure connected to a water supply. Composting toilets aren't formally permitted by NHDES, since the agency doesn't have an approval program for them, though they're allowed only where there's genuinely no water supply. Privies are an option too, but they need local health official sign-off, and only work where there's no electricity or running water.

Greywater. No town-specific rule exists, and state guidance treats any plumbed wastewater, including greywater, as something that needs to reach an ISDS or sewer. So independent greywater reuse systems aren't clearly permitted.

Rainwater and wells. I found no Sugar Hill ordinance touching either topic, meaning both default to state baseline rules, which generally permit them (plumbing code for rainwater, NH's Water Well Board under RSA 482-B for wells).

Going off-grid entirely. There's no blanket ban on disconnecting from utilities, but any structure with plumbing still triggers septic requirements, and any composting toilet or privy setup needs local health officer approval. Building permits apply regardless of what utilities you connect to.

Bottom line: Sugar Hill isn't hostile to off-grid living, but it's not a free-for-all either. Confirm specifics with the town and state offices below before you commit to a plan.