Clinton County, Illinois
Irishtown Township is a township in Clinton County, Illinois. Septic permits inside Irishtown Township come from Clinton County. 12 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Clinton County page.
Irishtown Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
New homes, decks, sheds, pools, garages, carports and farm structures on unincorporated land inside Irishtown township
“Application is hereby made for a Certificate of Zoning Compliance, as required under the ZONING ORDINANCE OF CLINTON COUNTY, for the erection, moving or alteration, and use of buildings and premises.”
“Generally, a permit is not required for a re-roof, window replacement, or similar maintenance projects.”
State certification-of-inspection rule for newly constructed commercial buildings in non-building-code jurisdictions; new single-family homes are outside it
“New residential construction is exempt from this Section and is defined as any original construction of a single-family home or a dwelling containing 2 or fewer apartments, condominiums, or townhomes in accordance with the Illinois Residential Building Code Act.”
Unincorporated land inside Irishtown township, Clinton County, Illinois, under the Clinton County Zoning Ordinance (county zoning, not a township ordinance)
“The Clinton County Zoning Ordinance became effective January, 1991 and applies to the unincorporated areas of the county as well as within villages that do not have their own zoning ordinance.”
Zoning districts (A, AR, R-1, R-2, R-3, C, I) applying in unincorporated Irishtown township
“DISTRICTS “A” “AR” “R1” “R2” “R3” “C” “I””
Lots in unincorporated Irishtown township under the Clinton County zoning districts: agricultural (A), agricultural-residential (AR) and single-family residential (R-1) per the county's lot-size schedule
“DISTRICTS “A” “AR” “R1” “R2” “R3” “C” “I” [...] MINIMUM LOT AREA 40 acres 3 acres 1 acre”
Structures in unincorporated Irishtown township, including road-frontage setbacks along county and township roads
minimum setback from township road centerline: 75 ft (outside the incorporated limits of any city, village or incorporated town) · minimum setback from county road centerline: 100 ft (outside the incorporated limits of any city, village or incorporated town)
“the minimum setback shall be 100 ft from the center line of the road, & Township roads the minimum setback shall be 75 ft from the center line of the road”
Private sewage disposal systems for homes on land inside Irishtown township not served by public sewer
“All private sewage disposal systems, either new installations, replacements or modifications must have a valid construction permit issued by the Clinton County Health Department.”
New residential construction on land inside Irishtown township that is not connected to public sewers
“All private sewage disposal systems, either new installations, replacements or modifications must have a valid construction permit issued by the Clinton County Health Department.”
Division of land into lots in unincorporated Irishtown township
“CLINTON COUNTY ILLINOIS SUBDIVISION PLAT REVIEW APPLICATION”
Construction on land in the mapped floodplain in unincorporated Irishtown township
“Is any part of the tract of land in the floodplain based on the Flood Hazard Boundary Map? Yes or No [...] (If you answered yes to the above, more information will be needed before issuing a building permit.)”
New home zoning certificate in unincorporated Irishtown township
“Site plan, 8 ½” x 11” copy of floor plan, sewage permit and any additional information required by Zoning Administrator.”
We looked and could not find an official answer yet. Silence is not permission; ask Irishtown Township or Clinton 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 Irishtown Township publishes no rule on the point, not that none exists. Clinton County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Irishtown Township means bringing your own water and power. The kit we’d start with:
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