Off-Grid Living in Roger Mills County, Oklahoma

I've been digging through official state and county sources for Roger Mills County, Oklahoma, and I'll be upfront: this is one of the thinner-documented counties I've researched. Roger Mills is rural (around 3,400 people), seated in Cheyenne, and I could not find a countywide zoning ordinance, a building-code adoption page, or a local septic ordinance on any official county or state host. That absence is itself useful information, but it means several answers here are "not confirmed" rather than a clean yes or no.

Zoning and raw land. I found no official Roger Mills County zoning map or ordinance. Zoning in Oklahoma is generally handled at the county or municipal level, and what little guidance exists points toward zoning being applied by incorporated towns (Cheyenne, Reydon, Hammon, Strong City) rather than countywide. If you're eyeing unincorporated land, I'd call the county courthouse directly before assuming anything.

Dwellings, tiny homes, RVs. No ordinance addressing tiny homes, minimum square footage, or RV living turned up for the county or its towns. Oklahoma has no statewide tiny-home law, so this is genuinely a local-discretion gap right now.

Building permits and codes. The Oklahoma Uniform Building Code Commission sets a statewide minimum code that counties can adopt, but whether Roger Mills County has adopted a code or requires permits for rural single-family homes isn't confirmed anywhere official I could find. Don't assume "no code" without asking the county.

Septic. This one is solid: Oklahoma DEQ is the sole permitting authority statewide, under rules in the Oklahoma Administrative Code (Title 252, Chapter 641). A soil evaluation by a qualified professional is the standard starting point. Roger Mills County has no local health department facility of its own, so residents lean entirely on the state DEQ program here.

Greywater and rainwater. Both are permitted under Oklahoma's state baseline, and I found nothing suggesting Roger Mills County has added restrictions to either.

Wells. Oklahoma law (via OWRB) exempts domestic wells from permitting, though non-domestic wells need OWRB authorization before drilling. No county-level well rule adds to this.

Utilities. No county ordinance requiring grid hookup was found. Given the lack of a documented building code or zoning ordinance, the state's general "no mandatory hookup" posture likely applies in unincorporated areas, but that's an inference, not a confirmed county rule.

Bottom line: for zoning, building codes, dwelling rules, and utility hookups, Roger Mills County is largely undocumented at the official level, so a phone call to the courthouse is your best move before you buy or build.