Off-Grid Living in Columbia, New Hampshire

I've been digging into what off-grid living actually looks like in Columbia, New Hampshire, a small town up in Coos County, and here's what I found.

First thing to clear up: Columbia is a zoned town. It's not one of those unregulated North Country townships where you can just show up and build. The Town of Columbia keeps its own Zoning Ordinance, administered through the Planning Board and Board of Selectmen, and that ordinance packet includes a fee schedule, site plan regulations, land subdivision rules, and a master plan. So any off-grid plans here run through local government first, not just the state.

Building and zoning compliance: Columbia requires what it calls a "Zoning Compliance Certificate" before you build. The application asks about your exterior finish, foundation type, chimney type, flood zone status, and whether you've got NH-DES septic approval. It references specific articles of the town's zoning ordinance. Once issued, I found that the certificate has to be posted at the job site and it expires a year after issuance. I don't have the exact ordinance article numbers or fee amounts beyond what's in that application, so confirm specifics with the Selectmen's office.

RVs, campers, tiny homes: Columbia has a separate "Camper Application," which tells me the town treats RVs and campers as their own permitted category rather than banning them outright. I couldn't confirm siting or duration limits from what's published, so ask the Town Office directly if you're planning to live in a camper or trailer.

Septic: This one's straightforward and it's a state matter. New Hampshire law (administered by NH DES) requires any building with plumbed fixtures that discharges wastewater to connect to an approved septic system or sewer. Composting toilets and privies are fine for human waste, but they can't be your entire wastewater solution if you've got a sink or shower plumbed in. Columbia's own building permit form asks if you have NH-DES septic approval, so the town cross-checks state approval rather than running its own program.

Greywater and rainwater: I didn't find any town-specific rule on either. That means you're working off whatever the state baseline is, and honestly it's murky. I'd call the town office to ask directly before you build a greywater or catchment system.

Wells: No added town-level well permitting appears to exist; the building permit doesn't even ask about wells, only septic. Wells fall under the state's Water Well Board process as far as I can tell.

Bottom line on utility disconnection: there's no explicit ban on going off-grid in Columbia, but you can't skip the Zoning Compliance Certificate process, and that process checks your septic approval and flood zone status before you build.