Shelby County, Illinois
Ridge Township is a township in Shelby County, Illinois. Septic permits inside Ridge Township come from the county and state together. 11 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Shelby County page.
Ridge 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 structures and alterations on unincorporated land inside Ridge township, issued by the Shelby County zoning office
“no structure of any kind shall be placed, erected, altered, changed, or located on any land within the jurisdiction of shelby county, illinois, including any unincorporated villages, without an improvement location permit (building permit).”
County zoning in unincorporated Shelby County, which includes unincorporated land inside Ridge township; this is the county's rule, not a Ridge township ordinance
“the zoning office is responsible for the issuance of building permits and enforcement of ordinance in any unincorporated areas of shelby county”
Current zoning district designations for parcels on unincorporated land inside Ridge township, shown on the county GIS map
“shelby county provides an online gis website at shelby county illinois supervisor of assessments gis map.”
Residences on unincorporated land inside Ridge township (county minimum, not a Ridge township rule)
minimum residence size: >= 900 square feet (variance available)
“currently, the minimum requirement for a residence is 900 square feet.”
Using a recreational vehicle as a dwelling on unincorporated land inside Ridge township
“recreational vehicles shall not be used as dwelling units except in locations lawfully established for such use, such as parks and campgrounds”
Tiny homes used as a residence on unincorporated land inside Ridge township
minimum residence size: >= 900 square feet (variance available)
“currently, the minimum requirement for a residence is 900 square feet.”
Manufactured homes placed on unincorporated land inside Ridge township
“examples: any style of home, regardless of construction type, such as frame, manufactured, modular, mobile, pole built, or shouse.”
Private sewage (septic) systems on land inside Ridge township: state rules, with the county health department handling the sewer permit where applicable
“the illinois department of public health (idph) regulates the installation of all private sewage disposal systems that have no surface discharge”
Preliminary and final plats for additions or subdivisions on unincorporated land inside Ridge township
preliminary plat application fee: 500 USD (plus $25 for each lot or parcel)
“application for preliminary plat, plus $25 for each lot or parcel in the proposed addition or subdivision”
Shelby County zoning permit fees for unincorporated land inside Ridge township
new residence building permit fee: 175 USD · accessory building permit fee: 125 USD
“shelby county requires a minimal fee to offset the cost of the zoning office. new residence: $175 residential addition: $125 accessory building: $125”
Building permit process for unincorporated land inside Ridge township
typical permit issuance time: <= 15 business days (typical, not guaranteed)
“typically, a permit is issued within 15 business days. you have 1 year to begin construction before the permit expires.”
We looked and could not find an official answer yet. Silence is not permission; ask Ridge Township or Shelby 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 Ridge Township publishes no rule on the point, not that none exists. Shelby County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Ridge Township means bringing your own water and power. The kit we’d start with:
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