DeKalb County, Illinois
Mayfield Township is a township in DeKalb County, Illinois. Mayfield Township adopts its own zoning, so inside its limits Mayfield Township’s rules apply, not the county’s. Septic permits inside Mayfield Township come from DeKalb County (DeKalb County Health Department, Environmental Health Division). 5 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the DeKalb County page.
The identified property at 25330 Five Points Road in unincorporated Mayfield Township; the applicable zoning rule-maker is DeKalb County, not the township.
former zoning district: A-1 Agricultural District · current zoning district: PD-C Planned Development–Commercial
“THE PLANNED DEVELOPMENT – COMMERCIAL DISTRICT LOCATED AT 25330 FIVE POINTS ROAD IN MAYFIELD TOWNSHIP”
The identified property at 25330 Five Points Road in unincorporated Mayfield Township.
district: PD-C Planned Development–Commercial (25330 Five Points Road)
“Planned Development – Commercial District”
Private sewage disposal within Mayfield Township where no city, village, or incorporated town provides and enforces at-least-as-stringent rules.
“The DeKalb County Health Department’s representative shall be authorized to apply and enforce”
Subdivision proposals in unincorporated Mayfield Township, reviewed by DeKalb County.
“Subdivision review and approval is the jurisdiction”
Construction subject to County building permits in unincorporated Mayfield Township.
commencement deadline: <= 180 days (after building permit issuance) · completion deadline: <= 12 months (after commencement)
“Construction shall begin within 180 days”
We looked and could not find an official answer yet. Silence is not permission; ask Mayfield Township or DeKalb County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Mayfield Township publishes no rule on the point, not that none exists. DeKalb County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Mayfield Township means bringing your own water and power. The kit we’d start with:
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