Off-Grid Living in Groton, Massachusetts

I've been digging into what off-grid living actually looks like in Groton, Massachusetts, and the short version is: Groton is a zoned town, so nothing here is a free-for-all. Whatever you're picturing, plan to work with the town on it.

Zoning. Groton's Zoning Bylaw is Chapter 218 of the town code, administered by the Planning Board and Zoning Board of Appeals. Most rural-feeling land sits in the R-A Residential-Agricultural district, which is meant for single-family homes plus continued farming and forestry, not for informal off-grid camps. Every lot still has to meet the dimensional, area, and frontage standards in Chapter 218, so "just living on raw land" isn't a recognized use on its own.

Dwellings, tiny homes, RVs. The bylaw is fairly restrictive about secondary living units. It defines an accessory apartment as a separate dwelling unit with its own kitchen and bathroom, capped at 800 square feet, and treats attached versus detached accessory apartments differently. I found nothing in the town code addressing RVs as permanent residences, so that's genuinely unclear, confirm directly with the Planning Board or Building Department before assuming it's allowed.

Building permits. Groton's zoning bylaw explicitly says construction has to meet the current state building code (780 CMR), and permits are pulled locally through the town's Building Department. There's no separate, looser local track for owner-built or alternative structures that I could find.

Septic and composting toilets. This is one of Groton's stricter spots. The Board of Health enforces its own Subsurface Sewage Disposal Regulations that in places go beyond the state's Title 5 minimum, for example sizing leach beds and pits at 150% of Title 5 requirements. Title 5 itself (310 CMR 15.000) is a Massachusetts DEP regulation, enforced locally by the Board of Health, and it treats greywater as wastewater needing an approved soil absorption system, there's no separate Groton greywater allowance that I could find.

Rainwater harvesting. I couldn't locate any Groton-specific bylaw on this either way. Treat it as governed by whatever the state baseline is, and ask the Board of Health if you want it in writing.

Wells and water. The Board of Health also has a hand in water supply, referencing a separate Water Supply chapter of the town code apart from sewer rules. Wells look locally administered rather than banned.

Off-grid utilities generally. I didn't find any Groton bylaw that specifically bans disconnecting from the grid. What applies is standard 780 CMR building and electrical permitting, same as elsewhere in the state.

Bottom line: Groton isn't hostile to rural or self-sufficient living, but it channels everything through the Planning Board, Building Department, and Board of Health rather than leaving gaps to slip through.