Off-Grid Living in Clallam County, Washington

I've been digging into what off-grid living actually looks like on paper in Clallam County, Washington, and the short version is: it's doable, but the county's permit system assumes you'll hook up to water and sewage service in some approved form, even if that "service" is your own well and your own septic tank rather than a municipal hookup.

Zoning is countywide under Title 33 of the Clallam County code, with Resource, Rural, Urban, Commercial, and Industrial zones plus special overlays around Sequim and Carlsborg. What you can do on raw land, including whether informal camping or occupancy is allowed while you build, depends entirely on which zone your parcel sits in. I'd pull up the specific chapter for your parcel before assuming anything.

On dwellings, if you're picturing a tiny home on wheels or a park model, Clallam County's DCD requires a placement permit, and that permit explicitly requires connection to an approved sewage system, potable water supply, and electrical service. That means a fully off-grid tiny home (no utility connections at all) isn't permitted for this housing category as written. Standard stick-built homes go through the county's general building permit process instead.

Building permits are required for most construction, repair, or alteration of structures, enforced locally by the DCD Building Division under the state building code. There's a narrow exemption for small detached sheds under 400 square feet and short fences or retaining walls, but that's a storage-shed exemption, not a green light for an occupied off-grid cabin.

Septic systems need a permit from Clallam County Environmental Health Services, starting with a site evaluation. Washington State also mandates an ongoing operation and maintenance program for septic systems. Whether a composting toilet alone, without any greywater or blackwater disposal, could satisfy county requirements isn't confirmed in the sources I found, so that's a direct question for Environmental Health.

Greywater rules flow from the state's WAC 246-274 framework, administered locally by Environmental Health as far as I can tell, but I didn't find a Clallam-specific greywater ordinance, so treat that as unconfirmed.

Rainwater catchment for non-potable use doesn't appear to be restricted, county rules mostly focus on drainage plans to control runoff. Using rainwater as your only potable source, though, would run into the county's potable-water-proof requirement for building permits.

Wells are covered by Washington's statewide small-well exemption under RCW 90.44.050, but Clallam County separately requires proof of potable water for most building permits, with its own fee and, for land divisions, a minimum yield standard. There's also a special Dungeness-area water rule worth checking if you're near that watershed.

Put together, going fully off-grid (no permits, no hookups) is easiest on paper for informal or exempt small structures, but a legally occupiable home will run into water, septic, and sometimes electrical requirements at the county level. Always confirm specifics with DCD and Environmental Health directly.