Off-Grid Living in Bronx County, New York

I'll be straight with you: Bronx County is a strange entry for a site about off-grid living, because there really isn't a "county" here to research. Bronx County is legally coextensive with the Borough of the Bronx, part of New York City. There's no county planning office, no county health department, no county building department. Every rule that matters is set by New York City agencies, applied citywide, with the Bronx covered by its own zoning maps and an Appendix F in the citywide Zoning Resolution. So when I say "restricted," I mean NYC says so, not some rural county board.

Given that framing, I'll tell you plainly: the Bronx is about as far from off-grid-friendly as it gets in New York State. It's fully zoned, per the NYC Department of City Planning's Zoning Resolution, so there's no unzoned or ag-exempt land to tuck a cabin onto like you might find upstate.

On dwellings, I didn't find any Bronx- or NYC-specific carve-out allowing tiny houses on wheels or RVs as permanent residences. It falls back to the state's general treatment of those as travel trailers, not permanent dwellings, and NYC's dense built environment isn't set up to accommodate that anyway.

Building work of any kind, plumbing included, needs a permit from the NYC Department of Buildings. Septic systems specifically need a permit too, and here's the kicker: DOHMH will not issue that permit if a public sewer connection is feasible, which describes almost the entire borough. So septic and full off-sewer living aren't realistic paths in the Bronx.

Greywater and rainwater reuse aren't banned outright, but they're treated as engineered systems requiring DOB and DOHMH sign-off under the Plumbing Code, not a barrel-and-hose DIY project (rain barrels themselves are lighter touch, under DEP guidance for one- and two-family homes).

Wells are the one area where NYC is stricter than most upstate counties: instead of just registering a driller with the state DEC, you need an actual permit from DOHMH under the NYC Health Code to drill, install, or use a well.

Bottom line for utilities: no official source lets you legally disconnect a permanent residence from city sewer and water here. If true off-grid living is your goal, I'd point you toward research on other New York counties with unzoned or agriculturally zoned land instead.

Always confirm specifics with the named city agency before you plan anything, this is a starting map, not a final answer.