Off-Grid Living in Coos County, Oregon

I've spent a while digging through Coos County, Oregon's official planning, building, and health department pages to figure out what off-grid living actually looks like here. A quick caveat up front: this covers unincorporated Coos County. If your parcel sits inside Coos Bay, North Bend, Coquille, Myrtle Point, Bandon, Lakeside, or Powers city limits, that city's own code takes over and can differ quite a bit (Coos Bay, for instance, has its own tighter RV/tiny-home rules).

Zoning. Coos County does have countywide zoning, administered by the county's Community Development Department under the Coos County Zoning and Land Development Ordinance (CCZLDO). Rural Residential zones (RR-5, RR-2) exist for lower-density rural home sites, but not every parcel is zoned to allow a dwelling outright, and the county's plan actually caps the number of rural dwelling units in some areas. You genuinely need to check the zone map for your specific parcel before assuming you can just build or live on raw land.

Dwellings, tiny homes, RVs. This is the trickiest part. The county's ordinance treats manufactured homes, mobile homes, and conventional dwellings differently by zone, and RVs as permanent standalone dwellings aren't a simple by-right use, RV parks require a full conditional-use/site-plan process. Oregon's SB 391 lets counties permit one ADU on rural-residential lots, but it doesn't force Coos County to allow it, so ADU rules are still being worked out locally. Bottom line: talk to Planning before you park anything intending to live in it long-term.

Building permits. The county's Building Department issues structural, plumbing, electrical, and mechanical permits countywide, with some carve-outs where cities (Coos Bay, North Bend, Lakeside) run their own programs. Any occupied structure needs a permit, full stop, per the county.

Septic. The county runs a full-service Onsite Septic Program, administered locally but built on Oregon DEQ's statewide rules (Oregon Administrative Rules and Revised Statutes). Poor soil, high groundwater, or steep slopes can push you into pricier alternative systems. Composting toilet specifics aren't spelled out anywhere I found, so ask the Onsite Septic Program directly.

Greywater and rainwater. I couldn't find any Coos County-specific ordinance for either one. Greywater defaults to Oregon DEQ's statewide tiered permitting, and rooftop rainwater catchment is generally exempt from state water-rights permitting, with no county-level restriction turned up in my research. Confirm with DEQ or county Building if you're doing anything beyond a simple catchment barrel.

Wells and water. Well construction is a state matter (Oregon Water Resources Department), not county-regulated. Notably, the county states there's no local public health regulation of private water safety, though Coos Health & Wellness will test your well water (coliform, nitrates, arsenic) on request, often for real-estate deals.

Off-grid/utility disconnection. Nothing in county materials bans living off-grid, but any dwelling still needs a building permit and an approved septic/wastewater system to be occupied legally.