Off-Grid Living in Plainville, Massachusetts

Plainville, Massachusetts is a fully zoned town, and if you're dreaming of quietly homesteading off-grid on a back lot here, I want to set expectations early: this is not unzoned rural land where you can just build and live as you please. Plainville's zoning bylaw (adopted by Town Meeting, on file with the Town Clerk) requires a permit from the Building Inspector before any structure is built, altered, or occupied, and before land use is changed. A Zoning Board of Appeals handles variances under state law (MGL c. 40A).

On dwellings: standard permitting applies town-wide, and I didn't find any Plainville-specific exemption for tiny homes or RV living. The Planning Board does administer an Accessory Dwelling Unit bylaw, which allows some ADUs by-right or by special permit, so a small secondary unit on an existing lot may have a path, but you'd want the Planning Board to confirm how your specific plan fits.

Building code enforcement runs through Plainville's Building Department, which enforces the state's 780 CMR (building), plus electrical, plumbing, and gas codes, as well as local zoning. No building can legally be occupied without a certificate of occupancy from the Building Commissioner where required.

Septic is a big one here. Plainville's Board of Health has its own local wastewater regulations that sit on top of the state's Title 5 code (310 CMR 15.00, administered by MassDEP). The Board of Health handles soil evaluation, septic design approval, and well siting locally, so any off-grid wastewater plan (including composting toilets, which still typically need Board of Health sign-off) needs to go through them.

Greywater and rainwater are murkier. I found no Plainville-specific bylaw loosening or restricting either one, so the practical answer is you're working within Title 5's general framework for greywater, and Massachusetts' general (fairly permissive for outdoor use, more complicated for indoor plumbing) approach to rainwater. I'd call this "not confirmed" at the town level rather than assume anything.

Private wells are locally regulated: Plainville's Board of Health maintains its own well regulations, separate from a groundwater protection zoning chapter. You'll need to go through their soil/water testing and variance process.

Living off the grid electrically (solar, disconnecting from utility power) is legal in Massachusetts generally, but it doesn't get you out of building code, septic, or well compliance. The state doesn't stand between you and going off-grid for power, but Plainville's Building Department and Board of Health still gate whether your home is legally occupiable.

Bottom line: Plainville is workable for an off-grid-style home if you go through the front door, permits, Board of Health approval for water and waste, and Building Department sign-off, rather than trying to go fully under the radar.