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

Limestone Township’s own rules

• Driveway accessRequired

  New-home road access in Limestone Township.

  • The county building-permit checklist identifies a road-access permit as required for Limestone Township.
  • The Township Road District publishes right-of-way permitting information.

  “Road Access Permit- required for Jubilee, Medina, and Limestone Townships. All others contact Township Road Commissioner, County Highway, or IDOT for road access requirements.”

Rules another office applies inside Limestone Township

Limestone 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, additions, alterations, renovations, repairs, qualifying decks and sheds, pools, fences, and demolitions on unincorporated land inside Limestone Township.

  • Decks over 25 square feet and sheds over 200 square feet require a building permit.
  • Additional erosion-control, electrical, plumbing, and HVAC permits may apply.
  • County Planning and Zoning serves unincorporated properties only.

  deck area threshold: > 25 square feet (Decks over this size require a building permit.) · shed area threshold: > 200 square feet (Sheds over this size require a building permit.)

  “A building permit is required for new construction, additions, alterations, renovations, and repairs of a building or structure. Decks over 25 square feet and sheds over 200 square feet in size require a building permit. Pools, fences and demolitions also require a permit.”

• Building code adoptedAdopted (with conditions)

  Residential building-permit projects on unincorporated land inside Limestone Township.

  • County checklist states plans are reviewed against the listed codes.
  • The source identifies the document as last revised January 2026; this is not treated as an effective date.
  • The county Planning and Zoning Department serves unincorporated properties only.

  International Residential Code edition: 2018 · International Existing Building Code edition: 2018 · National Electrical Code edition: 2017 · Illinois Energy Conservation Code edition: 2021

  “The Following Codes Are Adopted & Enforced [...] 2018 International Residential Code [...] 2018 International Existing Building Code [...] update: 2021 Illinois Energy Conservation Code, effective January 1, 2024 [...] 2017 National Electrical Code”

• Zoning districtsPublished (with conditions)

  Zoning districts for unincorporated properties inside Limestone Township.

  • County Planning and Zoning serves unincorporated properties only.
  • The County directs users to identify zoning by address or Parcel ID through its office or GIS map; parcel-specific classification must be confirmed.

  “You can call the office main line to find out what a property is zoned, provided that you have either an address or Parcel ID/Tax ID number. Or, you can use Peoria County's GIS map to find the zoning of a property.”

• Septic permitRequired

  Construction, alteration, or extension of a private sewage-disposal system inside Limestone Township.

  • A valid permit issued by the Health Department is required before the described work.

  “Requiring anyone constructing, altering, or extending a private sewage disposal system to have a valid permit issued by the Health Department.”

• Building in a floodplainLimited

  Development on unincorporated land inside Limestone Township that is in a designated regulatory floodway or flood fringe.

  • New construction or land improvements in a designated regulatory floodway are prohibited.
  • Construction and repair in the flood fringe require proper permits issued by Peoria County Planning and Zoning.
  • County Planning and Zoning serves unincorporated properties only.

  “A person may not make any new constructions or improvements to land that is located in a designated regulatory floodway. However the person may construct and repair structures located in the flood fringe, if the proper permits have been issued by the Peoria County Planning and Zoning Department.”

• Permit processPublished (with conditions)

  County building-permit applications for unincorporated property inside Limestone Township.

  • Digital submittals must include a building-permit application and other project submittal requirements.
  • Incomplete submittals are not sent for plan review.
  • Plans must be reviewed and approved before permit issuance.
  • County Planning and Zoning serves unincorporated properties only.

  “A building permit application must be submitted along with the rest of the submittal requirements for your project. [...] Incomplete submittals will not be sent for plan review. [...] Plans will then need to be reviewed and approved before a permit can be issued.”

Still unanswered

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

• Owner-builder exemption — Owner-built residential work on unincorporated land inside Limestone Township.
• Inspections — Building work inside Limestone Township.
• Certificate of occupancy — Occupancy of buildings inside Limestone Township.
• Local zoning — Land inside Limestone Township, including land that may be incorporated within another local government.
• Minimum dwelling size — Dwellings on unincorporated land inside Limestone Township.

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.