Off-Grid Living in Chesterfield, Massachusetts

I've been digging into what off-grid living actually looks like in Chesterfield, Massachusetts, a small town in Hampshire County, and I want to be upfront: this is research, not legal advice, and not something I've personally built or lived. Always confirm specifics with the town before you buy land or start construction.

Chesterfield is zoned, it's not one of those unzoned rural towns you sometimes find out west. The town's Zoning Bylaws (last amended in 2025) set a minimum lot size of two acres with 200 feet of frontage for any new dwelling, per the town's own bylaws (section 3.2). That alone shapes what "off-grid" can look like here, you're not going to be splitting a small parcel into multiple tiny footprints.

On dwellings: Chesterfield's Building Department has a fact sheet specifically addressing tiny houses, which tells me this is a live question locally. The bottom line is tiny homes are allowed, but they're not a loophole around code. If your unit is under 400 square feet and isn't in a mobile-home park, it likely falls under HUD's manufactured housing program, meaning it needs a data plate, VIN, and ANSI A119.5 compliance documentation. Otherwise, tiny houses are treated like any other house and must meet the Massachusetts State Building Code (780 CMR). Either way, you'll need a building permit through the town's Building Department.

Septic is where the state and town intersect. Massachusetts' Title 5 (310 CMR 15.000) is the controlling standard statewide, and in Chesterfield it's enforced locally by the Board of Health. I didn't find a town-specific septic bylaw beyond that administration role, so Title 5 is your baseline, and any composting toilet or alternative system would need Board of Health sign-off.

Greywater and rainwater harvesting are genuine gaps in what I could confirm. I found no Chesterfield-specific ordinance for either. That means the Massachusetts state baseline applies by default, rainwater for outdoor use is generally fine, greywater is restricted under Title 5's general framework, but for anything beyond the obvious, call the Board of Health directly and ask before you build a system.

Private wells are permitted and locally regulated, with the Board of Health as the authority, though I didn't turn up a specific Chesterfield well ordinance document.

Living disconnected from grid utilities is legal in the sense that no one's forcing you onto the grid, but any occupied structure still has to meet the same 780 CMR building code requirements as a grid-tied home. Chesterfield's zoning exists, per its own bylaws, to promote "health, safety, convenience, morals and general welfare" under Massachusetts General Law chapter 40A, and that framework doesn't bend for off-grid setups.

My honest take: Chesterfield isn't hostile to off-grid living, but it's also not a place where you can skip permitting. The two-acre minimum lot size is probably the biggest practical hurdle for anyone trying to get in cheap.