Bolthole Index

Madison County, Illinois

Zoning, building permits and septic rules in Alton Township, Illinois

Alton Township is a township in Madison County, Illinois. Septic permits inside Alton Township come from Madison County (Madison County Planning & Development — Private Sewage Permits & Inspections · (618)296-4663). 11 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Madison County page.

Answers from the rulebook for Alton Township

Rules another office applies inside Alton Township

Alton Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Building permitRequired

    New construction inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Construction may proceed only after plan review and permit issuance.
    • Building permits must be applied for in person at the Building & Zoning Department counter.
    • For a new home building permit, the county now requires an approved Private Entrance Application at submittal.
    “prior to commencing construction, a contractor is required to apply for a building permit and submit plans of the proposed project.”
  • Building code adoptedAdopted (with conditions)

    Construction inside Alton township outside the City of Alton's limits (unincorporated Madison County), administered by the Madison County Building & Zoning Department.

    • Adopted list on the county page: 2012 International Building Code, 2012 International Residential Code, 2012 International Mechanical Code, 2012 International Property Maintenance Code, 2009 International Energy Conservation Code, 2005 National Electrical Code, 2012 International Fire Code.
    • The page does not give an adoption ordinance number or date.
    • Does not cover the City of Alton, which applies its own code.
    “the following codes have been adopted: 2012 international building code”
  • InspectionsRequired

    Permitted construction inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Inspections occur at selected milestones, as stated by the county; the page does not list which milestones.
    • Inspection fees and scheduling are not stated on the page reviewed.
    “a building inspector will check progress at selected milestones to ensure that all codes are adequately met.”
  • Local zoningPresent (with conditions)

    Land inside Alton township outside the City of Alton's limits (unincorporated Madison County). Alton township's official site lists only assessor, general assistance and supervisor offices and does not show a township zoning ordinance, so county zoning is the operative rule here.

    • Covers unincorporated land only; land inside the City of Alton is not covered by this county claim.
    • Official sources reviewed do not state that Alton township has adopted its own zoning ordinance; this is not an explicit no-zoning statement either.
    • District-level limits were not extracted from the ordinance text in this run; see the dimensional-limit claims.
    “the zoning ordinance is used to regulate land use and development in madison county.”
  • Zoning districtsPublished (with conditions)

    Zoning districts for land inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • The county publishes a zoning map for unincorporated Madison County; the district list itself was not extracted in this run.
    “zoning map for unincorporated madison county.”
  • Who permits septicCounty (with conditions)

    Private sewage systems on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Installations follow state of Illinois and U.S. EPA requirements as administered through the county.
    • Does not cover land inside the City of Alton, which has its own plumbing and sewer permits.
    “inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
  • Septic permitRequired

    Installation of a private sewage system on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Permit covers installation of private sewage systems; permit fees and application steps were not in the page reviewed.
    “inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
  • Septic inspectionRequired

    Installation of a private sewage system on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Inspection timing is not stated on the page reviewed.
    “inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
  • Subdividing landRegulated (with conditions)

    Subdivision and site development inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Subdivision plats and improvements are reviewed by the county; the plat rules themselves were not opened in this run.
    “permits for grading, site development and subdivision improvements.”
  • Permit feesPublished (with conditions)

    Building permits inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • The fee schedule itself was linked from the county page but was not opened in this run; amounts are unknown.
    “click here for building permit application & fee schedule”
  • Permit processPublished (with conditions)

    Building permits inside Alton township outside the City of Alton's limits (unincorporated Madison County).

    • Permits are applied for in person at the counter; plans are reviewed before a permit is issued.
    • Plan-review timing and online filing steps were not extracted.
    “building permits must be applied for in person at the building & zoning department counter.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Alton Township or Madison County directly.

  • Owner-builder exemption — Owner-builder exemption for construction inside Alton township outside the City of Alton's limits
  • Certificate of occupancy — Certificate of occupancy for a new home inside Alton township outside the City of Alton's limits
  • Minimum dwelling size — Minimum dwelling size for the main single-family residential district and any agricultural district inside Alton township outside the City of Alton's limits
  • Minimum lot size — Minimum lot size for the main single-family residential district and any agricultural district inside Alton township outside the City of Alton's limits
  • Setbacks — Setbacks for the main single-family residential district and any agricultural district inside Alton township outside the City of Alton's limits
14 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Alton Township publishes no rule on the point, not that none exists. Madison County’s page lists the county offices to call.

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