Off-Grid Living in Williston, Vermont

I've been digging into what it would actually take to live off-grid in Williston, Vermont, and the short version is: this is not a quiet rural town where you can just settle in and build. Williston is a fast-growing Chittenden County suburb near Burlington, and it's fully zoned under the town's Development Bylaw (WDB), which the Planning & Zoning Office administers and updates regularly (last amendment I found was dated April 2025).

Zoning. Williston has multiple zoning districts, Village, Agricultural/Rural, Industrial, Mixed Use, and more, each with its own standards under the WDB. Even the Agricultural/Rural district isn't "do whatever you want" land; use is subject to district rules and permitting. If you're eyeing a specific parcel, I'd call the Zoning Administrator before assuming anything about what's allowed there.

Dwellings, tiny homes, RVs. I could not find a specific Williston bylaw provision addressing tiny homes or RVs as permanent dwellings. The WDB does regulate dwelling unit definitions and has provisions for existing, previously unoccupied lots, but the tiny-home/RV question is genuinely unclear from what's public. This is a "call the Zoning Administrator directly" situation.

Building permits. Williston requires either an administrative permit (staff-level, through the Zoning Administrator) or full Development Review Board review for most residential and commercial building work, especially in Williston Village. Which track you need depends on the project, so this gets sorted out at the Planning & Zoning Office.

Septic and greywater. Here's an important one: Vermont took over statewide jurisdiction of wastewater and water supply permitting back in 2007, so Williston itself doesn't run its own septic program. Instead, the state Department of Environmental Conservation (DEC), through its regional office system, issues permits for septic systems, potable water supplies, and by extension greywater systems, which fall under that same DEC framework. Williston is served by DEC's Essex Junction regional office. Composting toilets and greywater reuse setups would fall under this same state review, not a town ordinance.

Rainwater harvesting. I didn't find any town rule restricting non-potable rainwater catchment, and nothing at the state level jumped out either. That doesn't mean there's zero oversight, just that nothing turned up; treat this as permitted-by-default but unconfirmed.

Wells. Private well construction also falls under DEC's statewide Water Supply Rule, administered regionally. No Williston-specific well ordinance surfaced in my research. Note also that Vermont law (from the 2011-12 legislative session) touches on testing private water supplies, worth asking DEC about directly.

Off-grid / disconnected from utilities. Nothing in Williston's bylaws seems to force a municipal hookup, but you cannot skip the state wastewater and water supply permit even if you're fully off-grid. That permit requirement applies to any new residence needing a wastewater system or water supply, grid-connected or not.

Bottom line: Williston layers active town zoning and permitting on top of Vermont's statewide septic/water rules. It's doable, but plan on real paperwork at both levels.