Off-Grid Living in Skagit County, Washington

I've spent a good chunk of time digging through Skagit County's own code and forms for this one, and I want to lead with the headline: Skagit County is one of the toughest counties in Washington for a genuinely off-grid setup, not because of some anti-homesteader ordinance, but because of water rights. If you're picturing a cabin, a well, and a septic tank on raw land here, read the well section before you buy anything.

Zoning and land use. Skagit County, unlike some rural WA counties, has countywide zoning under Title 14 of the Skagit County Code (SCC), administered by Planning & Development Services. What's allowed depends entirely on your zone. Some rural designations, like Small Scale Recreation and Tourism, explicitly allow cabins but bar new year-round residential subdivision. So the same "rural" label doesn't mean the same rights everywhere. Always check your parcel's actual zone before assuming you can live there full time.

Dwellings and ADUs. The county updated its accessory dwelling unit rules, bumping the max size from 900 to 1,200 square feet, per the Board of Commissioners. Beyond that, I found commercial sites floating specific acreage and setback numbers for ADUs that I could not verify against the official SCC text, so treat those as rumors until Planning & Development Services confirms them for your parcel.

Building permits. Skagit County requires a permit for nearly anything you build, alter, move, or install, including sheds, shipping containers, wood stoves, and grading. There is a published exemption list, but even exempt projects still have to meet setback and floodplain rules, and flood permits are separate.

Septic. Handled under SCC Chapter 12.05, layered on the state's WAC 246-272A baseline, with the county's Board of Health tracking over 18,000 on-site systems countywide. Composting toilets fall under this same framework, not a special exemption.

Greywater. Permitted, but the county's Public Health department requires diversion valves back to your approved sewage system. It's built on the state's Chapter 246-274 WAC, and greywater reuse never substitutes for an approved septic or sewer connection.

Rainwater. Fully allowed for irrigation. More unusually, there's evidence, through a WWU Extension report and industry sources, that rainwater catchment has been used as a primary potable source in parts of the county hit by the well moratorium, including Guemes Island. I could not confirm this as official county policy, so ask Planning directly if that's your plan.

Wells and water rights, the big one. Since a 2001 Instream Flow Rule and a 2013 Washington Supreme Court decision (Swinomish v. Ecology), new water rights in the Skagit River Basin are effectively frozen to protect salmon habitat. Washington's statewide Hirst-fix law does not apply here. Practically, that means many new wells can't get approved, and without a lawful water source you can't get a building permit under RCW 19.27.097. This is the single biggest obstacle to off-grid living in this county.

Bottom line on utilities. No ordinance bans disconnecting from the grid outright, but the water-rights bottleneck makes true off-grid homesteading a legal minefield here in a way it isn't in most WA counties.