Off-Grid Living in Grant County, New Mexico

I've been digging into Grant County, New Mexico for readers who want to go off-grid out in the high desert around Silver City, and the short version is: the county government does much less regulating than you'd expect, because it hands most of the hard stuff off to the state.

Zoning in unincorporated Grant County is overseen by the Grant County Planning and Community Development Department, which handles the comprehensive plan, subdivision rules, floodplain permits, and code enforcement. I didn't find a blanket ordinance restricting raw or vacant land use outside of subdivision and floodplain rules, but that's a "not found" rather than a guarantee, so I'd call the department before assuming anything. Note that if you're inside Silver City limits, the town's own Planning & Zoning Commission takes over, not the county.

Dwellings, tiny homes, and RVs: I couldn't confirm a countywide ordinance on tiny-home minimum size or full-time RV living. The county does regulate moving manufactured homes (a movement certificate and tax release are required), but that's about relocating a structure, not about occupancy rules on raw land. Treat this as unresolved and confirm directly with the county.

Building permits are the big structural fact here: Grant County has no building department of its own. All permitting and inspections for construction, including plumbing, run through the state's Construction Industries Division out of Las Cruces. That means the applicable code is the state's IRC-based standard, with no local Grant County amendments that I found.

Septic systems are permitted through the New Mexico Environment Department, not the county. NMED lets a qualified homeowner apply to install or modify a system for their own residence (not a rental), following its standard application and inspection process. Grant County's only related ordinance is an old, narrow one covering North Hurley's wastewater system, which doesn't apply countywide.

Greywater and rainwater harvesting aren't separately addressed by the county at all, so both default fully to state rules: NMED's small-system greywater exemption, and the Office of the State Engineer's general encouragement of rainwater catchment.

Wells and water rights run through the OSE, and Grant County's own resources page points residents to the Water Rights District III office in Deming rather than handling anything itself.

Utility disconnection (going without grid electric, water, or sewer hookups) isn't addressed in the county's ordinance list I reviewed. This is unresolved at the county level, and if it comes up anywhere, it's more likely through subdivision covenants or municipal rules in a town like Silver City than through the county itself.

Bottom line: Grant County is largely a "pass-through" jurisdiction. For land use, call the county; for anything involving actual construction, water, or waste systems, you're dealing directly with New Mexico state agencies.