Off-Grid Living in Woodford County, Illinois

I've been digging into what it actually takes to live off-grid in Woodford County, Illinois, and the short version is: this is one of the more workable counties in the state, but it's also a county where a lot of specifics simply aren't spelled out in writing, so you'll need to make some phone calls before you buy land or start building.

Zoning comes from the county, but towns override it. Unlike some Illinois counties that have no zoning at all, Woodford County has a countywide zoning ordinance (Chapter 154) administered by the county's Building and Zoning department. That only applies to unincorporated land, though. If you're inside Eureka, Metamora, El Paso, Roanoke, or any other incorporated town, that town's own zoning and building code governs, not the county's. Everything below is about unincorporated Woodford County.

No adopted building code, but zoning permits still apply. This is the most unusual thing about Woodford County: it's a non-building code jurisdiction, per the county's own Building and Zoning page. That means there's no countywide building code dictating construction standards for a conventional house. But you still need zoning permits, and the ordinance does set minimum floor-area and habitability standards by district, plus specific rules for manufactured/mobile homes (there's a width and length threshold for a mobile home to be treated as a single-family dwelling). Whether Illinois's new statewide building code, effective in 2025, now fills that gap in unincorporated Woodford County isn't confirmed in anything I found, so ask Building and Zoning directly before assuming there are no construction standards at all.

Tiny homes and RVs as residences are a gray area. Because there's no building code, occupancy questions get funneled through zoning use classifications instead. I couldn't confirm a specific minimum square footage or a clear yes/no on living in an RV full-time. Call Building and Zoning before you commit to either path.

Septic and wells are solidly permitted, just routed through the county Health Department. Septic systems, including alternative/experimental designs when a site can't support a standard system, go through the Woodford County Health Department's private sewage program, which follows Illinois's Private Sewage Disposal Code plus the county's own septic ordinance. Wells work the same way: the Health Department permits and inspects them under state authority (IDPH's well and pump program, Administrative Code Part 920), since Woodford is one of roughly 90 counties handling this locally on IDPH's behalf.

Greywater, rainwater harvesting, and full utility disconnection are simply not addressed anywhere I could find, county or state. That's not the same as a ban, it likely just means these fall under the general private sewage framework or haven't been written into local rules at all. I'd treat all three as "confirm before you build" territory rather than assuming they're settled.