Off-Grid Living in Castleton, Vermont

I've been digging into Castleton, Vermont for folks dreaming of a quieter, more self-sufficient life on the west side of the state, and here's my honest read on where things stand.

First, the big one: Castleton is a zoned town. That surprises some people who assume rural Vermont towns are a free-for-all, but Castleton has a real Zoning Ordinance (most recently updated in 2021, with a Unified Development Bylaw amendment process underway as of early 2025), enforced under the state's municipal planning statute, 24 V.S.A. Chapter 117. The town's Zoning Administrator and Development Review Board run the show locally, and the ordinance is explicit that any use not spelled out in the bylaw is treated as prohibited. So before you buy land here, check which zoning district it's in and what the minimum lot size is, I've seen references to 20,000 and 40,000 square foot minimums depending on the district.

One thing unique to Castleton: it has a Water Source Protection Overlay District layered over parts of town to protect drinking water supplies. If your land falls in that overlay, expect added restrictions on things like fuel storage and waste disposal, on top of the base zoning.

For dwellings, mobile/manufactured homes get their own siting rules (mobile home parks need substantial acreage and approved water hookups), but I didn't find a specific tiny-house or RV-as-permanent-dwelling exemption in the town's bylaw. Any new structure needs a zoning permit from the town's Administrative Officer, and conditional uses go through the Development Review Board.

Septic and water supply are where Vermont's state government, not the town, calls most of the shots. The state Department of Environmental Conservation has taken universal jurisdiction over wastewater and potable water systems statewide, meaning new septic systems, composting toilets beyond small exemptions, and wells for single-family homes, cabins, even yurts, need a state permit through DEC. Castleton's overlay district adds a local layer of protection but doesn't replace the state process.

Greywater and rainwater harvesting are handled the same way, mostly at the state level, with no Castleton-specific bylaw found for either. Rainwater collection for non-potable use looks fine under state guidance, and I found nothing in the town ordinance restricting it.

Living off-grid, unhooked from municipal utilities, appears permitted as far as the zoning bylaw goes. Castleton doesn't seem to mandate utility hookups. You'll still need a zoning permit for whatever structure you build and, separately, state permits for septic and well work.

Bottom line: this is a place where state DEC rules govern your water and waste systems, and the town's zoning ordinance governs where and what you can build. Confirm your parcel's district and overlay status with the Zoning Administrator before you commit.