Off-Grid Living in Fairhaven, Massachusetts

If you're dreaming of an off-grid setup in Fairhaven, Massachusetts, let me set expectations right away: this is not unzoned rural land where you can quietly do your own thing. Fairhaven is a fully zoned town, with its Zoning Bylaw (Chapter 198) administered by the Planning Board and Zoning Board of Appeals, and enforced day to day by the Building Department. Anything you want to build or occupy has to fit into the district use tables in that bylaw.

On dwellings: the zoning bylaw limits a lot to one single-family, semidetached, or two-family dwelling. If you're picturing a tiny house or an RV as a permanent residence, you'd need it to satisfy both zoning and the state building code (780 CMR), which the Fairhaven Building Commissioner enforces locally. I didn't find a specific town rule addressing RV living or minimum dwelling size beyond the general one-dwelling-per-lot rule, so I'd call the Building Department before assuming anything is allowed.

Septic is where Fairhaven gets notably hands-on. The Board of Health runs its own sewage disposal regulations (Chapter 432) layered on top of the state's Title 5 program. Repairs need a licensed installer and, for leaching area work, an engineer's plan. There's also a rule that if your well and septic system don't meet minimum separation distances and municipal water is adjacent, you're required to connect to town water. On top of that, the state DEP is working on nitrogen-reduction rules for nitrogen-sensitive coastal areas, which could tighten septic requirements further in a town like Fairhaven that sits on embayments.

Greywater is treated seriously too. The town's nuisance bylaw (Chapter 448) says you can't discharge greywater or sewage effluent into lakes, ponds, streams, tidal waters, or drains without approval from the state DEP and the local Board of Health. So there's no casual greywater-to-garden setup without going through that approval.

Rainwater harvesting is a bright spot: I found no Fairhaven-specific rule restricting it, so the general Massachusetts baseline applies, outdoor catchment is fine, indoor plumbing use runs into stricter plumbing code and Title 5 considerations.

Wells fall under Board of Health jurisdiction, cross-referenced in the building code (Chapter 110, Excavations and Wells), and again tie back into that mandatory connection-to-municipal-water rule if separation distances from septic aren't met.

Living fully disconnected from utilities isn't explicitly banned, but between the Building Commissioner's occupancy requirements and the Board of Health's sanitary code (which requires occupants to keep dwellings clean, sanitary, and free of health hazards), you're effectively pushed toward having a functioning septic and water source to get a certificate of occupancy.

Bottom line: Fairhaven is a place where the town, the county-adjacent state agencies, and state code all layer on top of each other. Call before you build.