Off-Grid Living in Delaware County, Pennsylvania

I'll be upfront: Delaware County, Pennsylvania is one of the trickier places to research because there's no countywide zoning or building code. Pennsylvania runs on a Home Rule tradition, which means each of the county's 49 municipalities (townships and boroughs) writes and enforces its own zoning ordinance and administers its own building permits. The Delaware County Planning Department reviews subdivision and land development proposals under the state's Municipalities Planning Code, but that review is advisory only. Final say belongs to your township or borough.

So for zoning and raw-land occupancy, whether you can live in a yurt, tiny house, or bare-land camp depends entirely on your specific municipality's zoning map and district rules. I'd start with the county's parcel/zoning lookup tool to find your municipality, then call that township or borough directly.

Building permits work the same way. Pennsylvania's Uniform Construction Code sets the statewide baseline, but the state Department of Labor & Industry notes that more than 90% of municipalities administer and enforce it themselves, either with their own inspectors or a certified third-party agency. Some municipalities have "opted out" of enforcing the residential side, which shifts that job to a third-party agency the property owner hires. Either way, this is a municipal-level call, not a county one.

Septic is where Delaware County actually breaks from the "everything is local" pattern. As of June 2023, the Delaware County Health Department took over on-lot sewage system permitting countywide, replacing what used to be handled township by township. This follows the state's Act 537 sewage facilities framework, and the county's own manual is explicit: no repair or new installation can happen without a Health Department permit. I didn't find a separate county rule for composting toilets, so I'd assume the state's sewage-disposal framework still governs them.

Greywater and rainwater harvesting don't have dedicated Delaware County rules that I could confirm. Greywater appears to be folded into the same Act 537 sewage permitting the Health Department runs, and rainwater collection for non-potable use doesn't seem to be separately restricted, but neither has a distinct county page addressing it directly, so treat both as governed by the state baseline until a local office tells you otherwise.

Private wells are the other place the county has stepped in beyond the state's usual hands-off approach. Pennsylvania doesn't regulate private wells directly, but Delaware County's Health Department now issues permits for well construction, including private water wells, geothermal wells, and monitoring wells. Drillers still need to meet the state's separate licensing requirements.

Utility disconnection (living off-grid without power or water hookups) isn't addressed at the county level in anything I found. If your township ties a certificate of occupancy to utility connections, that would be a purely municipal condition, so ask your local building or codes office.

Bottom line: for septic and wells, call the county. For everything else, zoning, dwellings, building permits, utilities, your township or borough has the real answer.