Off-Grid Living in Hudson, New Hampshire

I've been digging into what off-grid living actually looks like in Hudson, New Hampshire, and the short version is: Hudson is a conventionally zoned town, so "off-grid" here means working within a fairly standard suburban-style rulebook, not homesteading on unregulated land.

Zoning. Hudson's Zoning Ordinance (Chapter 334, adopted back in 1994) divides the town into residential, business, and industrial districts. The R-1 district requires 40,000 square foot minimum lots with specific setbacks, R-2 allows smaller 20,000 square foot lots. This is all enforced by Hudson's Zoning/Code Enforcement Department. If you're picturing raw land you can just settle on, that's not how it works here, any residential use falls under these district rules, and multifamily or non-residential development needs Planning Board site plan approval first.

Dwellings, tiny homes, RVs. Manufactured homes and trailers need a Building Inspector permit before being placed on a lot, and manufactured home subdivisions are limited to the General District. There is a provision letting you place a manufactured home temporarily while you build a permanent home, but it's capped at one year and has to come off the lot within a couple months of you moving into the real house. I couldn't find anything in Hudson's code specifically addressing tiny homes on wheels, so I'd treat them like RVs/manufactured homes until the Zoning Administrator tells you otherwise.

Building permits. Hudson's Inspectional Services Division runs the show on construction, plumbing, electrical, and occupancy. No occupancy without a certificate of occupancy from the Building Inspector, full stop. Small accessory stuff (mailboxes, doghouses, low fences) is exempt from permitting, but a dwelling is not.

Septic. This is a state matter, run by NH DES (Department of Environmental Services), not the town. You need an Approval for Septic System Construction and eventually an Approval for Operation, with plans drawn up by a state-licensed septic designer. Hudson coordinates but doesn't run its own separate program that I found.

Greywater, rainwater, wells, and utility disconnection. Honestly, these are the areas where I couldn't pin down Hudson-specific rules. New Hampshire doesn't have a dedicated statewide residential greywater rule either, and I found no Hudson ordinance on rainwater harvesting or well siting beyond the state's Water Well Board process. As for living fully off-grid, unhooked from utilities, I didn't find an explicit ordinance requiring hookups, but remember that certificate of occupancy still has to be signed off on, so however your setup works, it needs to pass that inspection. My honest advice: call the Zoning/Code Enforcement Department before you assume any of these are unregulated.

Bottom line: Hudson isn't hostile to off-grid elements like septic-based living, but it's not a no-questions-asked jurisdiction either. Building permits, zoning districts, and occupancy certificates are all real hurdles you'll need to clear.