Off-Grid Living in Hamilton County, New York

Hamilton County, New York is a strange place to research off-grid rules, because there isn't really a "county government" layer doing the zoning, building, or septic work that you'd find in most other counties. Hamilton County sits entirely inside the Adirondack Park's "Blue Line," one of only two New York counties fully inside the Park (Essex is the other). That geography means land use here is split between individual towns and the state Adirondack Park Agency (APA), not a unified county planning or building department.

Here's the practical version: when the APA was created, towns inside the Park got to choose whether to write their own zoning code or let the APA regulate land use directly. Only 28 of the Park's towns opted to adopt their own zoning. So depending on which town in Hamilton County your land sits in (Long Lake, Indian Lake, Lake Pleasant, and so on), you're either dealing with that town's own zoning and building code enforcement officer, or, if the town never adopted zoning, you're dealing directly with the APA under the Adirondack Park Land Use and Development Plan. I could not confirm any Hamilton County government zoning, building, or health department page in official sources, so I'm treating those functions as handled town-by-town plus by the state (APA, DEC, DOH) rather than assuming a county office exists.

For dwellings, tiny homes, and RVs, I found no Hamilton County-specific rule. Absent that, you're back to whatever the town says (if it has zoning) or the APA's Park-wide development review (if it doesn't), layered on top of the general state pattern that RVs aren't meant as permanent housing outside licensed parks. Building permits work the same way: no county building department was confirmed, so it's the town's code enforcement officer applying the New York Uniform Fire Prevention and Building Code, plus a possible separate APA permit for anything that counts as a "project" under Park rules, including certain subdivisions, wetlands work, or river-adjacent construction.

Septic, greywater, rainwater, and wells all fall into the "not confirmed at the county level" bucket. There's no Hamilton County health department septic page I could locate, so the working assumption is the state Department of Health wastewater/composting-toilet framework applies, with the APA layering on additional permitting if your septic siting touches a regulated wetland or a designated wild, scenic, or recreational river. Wells follow the general New York pattern (DEC-registered driller, DOH construction standards, no separate state well permit) unless APA wetlands or river jurisdiction kicks in.

Bottom line: whether you can live off-grid here, and how, depends heavily on which specific town your parcel is in and whether that town has its own zoning. There is no shortcut around calling both your town clerk and the APA before you buy or build.