Off-Grid Living in Sac County, Iowa

I've been digging into Sac County, Iowa for readers thinking about going off-grid here, and the honest answer is: some of this is solid, and some of it I just can't confirm from public sources yet.

Zoning and raw land. Sac County runs its own zoning program through a Zoning Commission and Board of Adjustment, both appointed by the Board of Supervisors. Interestingly, at a February 2025 supervisors' meeting the Planning & Zoning Director said the county doesn't require an ag construction permit and has no setbacks in place for agricultural land, but also flagged that the zoning ordinance needs revisions and that her office would start working on them. That tells me the rules here are genuinely in flux. If you're eyeing raw land for an off-grid setup, don't rely on secondhand summaries, call the Zoning Administrator and ask what applies to your parcel right now.

Tiny homes and RVs as dwellings. I couldn't find an official Sac County or Iowa page that squarely addresses using a tiny house or RV as a permanent residence. Iowa state law (Iowa Code §335.30) limits how much extra a county can pile on top of HUD-code manufactured homes, but that doesn't settle tiny-house or RV occupancy specifically. This is a "call before you buy land" item.

Building permits. The county's Planning & Zoning department, under Zoning Administrator Taylor Egesdal, handles permitting and lists building, wind tower, and other permit types. Whether Sac County has adopted the Iowa State Building Code as-is or with local amendments isn't spelled out on the public pages I found, so confirm that directly too.

Septic. This one's clear. Sac County Environmental Health (the Sanitarian) issues septic permits, sizes systems by bedroom count and soil analysis, and requires a Sac County Certified Septic Installer to do the install. Time-of-transfer inspections are required before a sale closes unless a waiver is signed, and waivers are only given for narrow reasons like weather or Sanitarian discretion. This all sits under Iowa DNR's statewide private sewage rules (567 IAC Chapter 69), which the county enforces locally, and that chapter does cover composting/holding-tank systems.

Greywater and rainwater. Neither is addressed on any Sac County or Iowa DNR page I could find. Greywater in particular could get swept into the same septic permitting regime if it's not going to an approved system, so ask the Sanitarian directly before you build a greywater setup.

Wells. Also clear and county-administered. Sac County Environmental Health issues well drilling permits and does water testing, following Iowa Administrative Code Chapter 49 plus county procedures, with certified drillers required. There's even a reimbursement program for plugging old abandoned wells, run through the county with Sanitarian oversight.

Going fully off-grid. No outright ban on disconnecting from utilities that I found, but you still need compliant well and septic permits, and the zoning framework governing occupancy is actively being revised. That's a moving target worth checking on directly before you commit to land or a build.