Off-Grid Living in Rio Arriba County, New Mexico

I've been digging into what it actually takes to live off-grid in Rio Arriba County, New Mexico, and the honest answer is that a lot of the specifics run through the State of New Mexico, with the county acting as a gatekeeper that checks your paperwork before it lets a project move forward.

Zoning. Rio Arriba County's Planning and Zoning Department (based in Tierra Amarilla) oversees land use countywide and keeps a Comprehensive Plan plus subdivision regulations. I could not confirm district-by-district rules for raw land occupancy in the materials I found, so if you're eyeing a specific parcel, call Planning and Zoning directly before you assume anything.

Dwellings, tiny homes, RVs. The county's Development Permit application explicitly covers manufactured and modular home placement, so that path exists. I did not find a distinct tiny-home or full-time RV occupancy ordinance, which likely means the state's baseline construction code applies by default, but confirm with the county since this is exactly the kind of detail that gets missed until you apply.

Building permits. This one I feel good about: Rio Arriba requires a county Development Permit, and separately routes building code review through the New Mexico Construction Industries Division (CID) using a Multi-Purpose State Building Application. So plan on two layers, local development approval and state code review.

Septic. Rio Arriba is not Bernalillo County, so it doesn't have its own onsite wastewater ordinance. Septic systems here are regulated by the New Mexico Environment Department (NMED) under the statewide program, and the county's own permit checklist requires NMED clearance as part of Development Permit approval. Homeowners statewide, Rio Arriba included, can potentially self-install a conventional system after passing NMED's homeowner qualification exam. Your local contact is NMED's Santa Fe District 2 office.

Greywater and rainwater. I found no Rio Arriba-specific rules for either. Both appear to default to New Mexico's statewide baseline, which gives some exemption for small greywater systems and doesn't restrict residential rainwater collection. Still worth a call to confirm nothing local has been layered on top.

Wells and water rights. This is state territory too, run by the Office of the State Engineer (OSE). The county's permit checklist requires proof of a well permit or documented water association membership before it will sign off on development. Nearly all of Rio Arriba's drinking water comes from groundwater, so OSE well permitting is central to any off-grid water plan here.

Utility disconnection. I found no explicit county rule requiring or banning full grid disconnection. The Development Permit does track "Utility Service" as a category, so the county wants to know your setup, but a blanket mandatory-hookup rule wasn't confirmed either way.

Bottom line: Rio Arriba gives you real off-grid latitude on paper, but nearly every dimension routes back to a state agency (CID, NMED, OSE) for the substantive rule, with the county checking that you've done it. Confirm specifics before you buy land or build.