Off-Grid Living in Garfield County, Washington

I've been digging into Garfield County, Washington for anyone dreaming of an off-grid setup out near Pomeroy, and the short version is: this is a rural county with real zoning, not a lawless frontier, so you still need to plan around county rules layered on top of state law.

Zoning is countywide here, adopted by Garfield County through its Zoning Ordinance, Zoning Map, and Critical Areas Ordinance. The Planning Division (part of Garfield County Public Works) reviews proposals against zoning, critical areas, drainage, road access, and SEPA. What you can do with a parcel depends entirely on which zone it sits in, so pulling the zoning map before you buy land is worth your time.

Dwellings, tiny homes, and RVs get specific treatment I found notable. Garfield County's Zoning Ordinance names tiny homes, yurts, camping cabins, tents, and RVs directly. Site-built camping units not certified by the state Department of Labor and Industries need a building permit. Here's the catch I'd flag hardest: the county says using any camping unit (RV, yurt, tiny home) for more than 90 days a year, even sporadically, turns it into a "Dwelling Unit" legally, and that triggers full building and zoning compliance. That's a county-specific rule, not something the state RCW spells out this precisely.

Building permits run through the same county Building & Planning Division, enforcing Washington's uniform building code locally.

Septic is handled in a shared arrangement I found genuinely interesting: Garfield County Public Health takes your Site/Soil Evaluation Form and fee, then forwards the application to Asotin County's Environmental Health Administrator for technical review, since Garfield leans on Asotin's staff. Once approved you get a Construction Permit, and after a final inspection an Operational Permit. This runs under the state's WAC 246-272A framework.

Greywater has no Garfield-specific ordinance that I could find, so the state WAC 246-274 baseline is what applies, administered through the same local health jurisdiction. Not confirmed whether there's any extra county layer here, so ask Public Health directly.

Rainwater harvesting for non-potable use is fine under Washington Department of Ecology's statewide policy, no water right needed if it's collected on-site from an existing structure. If you want rainwater as your sole potable supply for a new home, Ecology says to check with the county planning department, and I couldn't confirm Garfield's position on that.

Wells and water rights fall under Ecology's Eastern Region office, which covers Garfield among a cluster of southeastern Washington counties. Small exempt groundwater wells are generally allowed under state law, but surface water diversion always needs a water right.

There's no standalone "off-grid living" ordinance in Garfield County. Instead, going off-grid is shaped by that 90-day dwelling-unit rule, plus building and septic compliance.