Off-Grid Living in Luna County, New Mexico

Luna County, New Mexico is one of the more interesting places in the state to research off-grid life, because it has countywide zoning (many rural NM counties don't) but explicitly does NOT issue its own building permits. That split matters a lot for how you plan a project here.

Zoning and land use. The Luna County Planning & Community Development Department administers land use rules across the unincorporated county, and it processes exemptions, conditional uses, variances, and subdivisions. The department itself recommends you call before doing any development or property improvement, and I'd take that seriously rather than assuming raw land is a blank slate.

Dwellings, RVs, tiny homes. If you're thinking of living in an RV while you build, know that Luna County regulates RVs directly under a county ordinance, with a permit application process through Planning. There's even a separate short-term "180 Days" RV application form, which hints at different rules for longer occupancy, though I couldn't confirm the details of what kicks in after that period. Manufactured homes need their own installation permit from the county. I found no tiny-home-specific ordinance, so that likely falls back to whatever state building code and county zoning otherwise require, unconfirmed.

Building permits. This is the county's quirk: Luna County has no local building inspector, so it doesn't issue permits itself. The Planning Department reviews applications for compliance with county rules like floodplain management, then forwards them to the New Mexico Construction Industries Division (CID) in Las Cruces, which is the actual permitting authority. There's a county Building Code Ordinance on file, but I couldn't confirm its specific contents from available sources, so ask Planning directly.

Septic and greywater. Septic falls under state rules from the New Mexico Environment Department (NMED), since Luna County has no wastewater ordinance of its own (only Bernalillo County does). Licensed contractors handle most installs, though homeowners can sometimes install simple systems after passing a written test. Applications need proof of ownership, a site diagram, floorplan, and survey. Greywater reuse is permitted under the same statewide NMAC rule NMED administers; no county-specific twist was found.

Rainwater harvesting. No Luna County rule was found either way, so this defaults to the state's general encouragement of residential rainwater collection through the Office of the State Engineer.

Wells and water rights. Any water use in New Mexico needs an Office of the State Engineer permit. Domestic wells are capped by state rule at a set annual diversion per household, and the rule itself notes counties can impose additional restrictions, but I found no Luna County-specific well ordinance confirming whether that's happened here.

Utilities. No county rule was found requiring or forbidding grid disconnection. This is likely handled case by case through zoning and floodplain review rather than a blanket policy, unconfirmed.

Bottom line: state agencies (CID, NMED, OSE) do the actual permitting for building, septic, and wells, but Luna County Planning gatekeeps zoning, RVs, and manufactured homes, and wants to hear from you before you start.