Off-Grid Living in Foster, Rhode Island

I've been digging into what off-grid living actually looks like in Foster, Rhode Island, and the short version is: Foster is a real, zoned town, not some rural loophole. It's governed by Chapter 38 of the Foster Code of Ordinances (hosted on Municode), with a zoning board of review, an administrative officer, and a zoning enforcement officer handling day-to-day decisions and appeals. Much of Foster also sits inside the Scituate Reservoir watershed, which the town's comprehensive plan flags as a place needing extra land-use and stormwater care, so if your parcel is in that watershed, expect more scrutiny on anything involving wastewater or land disturbance.

On raw land occupancy, I didn't find any Foster-specific ordinance loosening the state's baseline rules, so I'd treat this as restricted/varies by zoning district until you confirm with the town. Same story with tiny homes and RVs as permanent residences: I found no Foster-specific text addressing this, which means Rhode Island's general stance (RVs are not treated as permanent dwellings outside of emergency or temporary situations) is the default assumption.

Building permits are handled locally by Foster's Building & Zoning Department, which offers e-permitting and has posted specific office hours for the Building Official. That department enforces the state building code baseline; I didn't find any town-specific relaxation of it.

Septic is where the state, not the town, really runs the show. Rhode Island's Department of Environmental Management (DEM) regulates onsite wastewater treatment systems (OWTS) statewide under its OWTS Program rules, covering design, siting, and maintenance. I found no Foster-specific composting toilet ordinance, so DEM's statewide rules are what apply. Greywater reuse has the same story: no Foster-specific ordinance turned up in my research, so the state OWTS framework is the default, and I'd call that "restricted" until you get a straight answer locally.

Rainwater harvesting looks fine: I found nothing in Foster's code restricting it, and the state baseline generally permits it, though I'd still confirm nothing's changed. Private wells are regulated at the state level by the RI Department of Health, and Foster's Building & Zoning office handles related local permitting, so that's your first call for anything well-related in town.

Living fully disconnected from utilities (no grid electric, no municipal water/sewer) isn't something I found Foster addressing directly. Absent a town-specific exception, the state's general expectations around utility connection for permanent dwellings likely apply.

Bottom line: Foster gives you real rural land and a genuine watershed-conscious planning approach, but it is not an off-grid-friendly loophole town. Nearly everything not explicitly covered by Foster's own zoning chapter defaults back to Rhode Island state rules, especially for septic, wells, and utilities. Call ahead before you buy land or start building.