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

Rules another office applies inside Millbrook Township

Millbrook 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, and repairs on unincorporated land inside Millbrook Township served by Peoria County Planning and Zoning.

  • Decks over 25 square feet, sheds over 200 square feet, pools, fences, and demolitions require a permit.
  • Additional erosion-control, electrical, plumbing, and HVAC permits may apply.

  deck area: > 25 square feet (building permit required) · shed area: > 200 square feet (building permit required)

  “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.”

• Building code adoptedAdopted (with conditions)

  Construction on unincorporated land inside Millbrook Township served by Peoria County Planning and Zoning.

  • County page says the code enforcement is effective July 1, 2021.
  • The page lists a 2021 Illinois Energy Conservation Code update effective January 1, 2024.

  International Residential Code edition: 2018 · National Electrical Code edition: 2017

  “Effective July 1, 2021, Peoria County will enforce the 2018 ICC I-Codes and the 2017 National Fire Protection Association 70: National Electric Code.”

• InspectionsRequired

  Permitted projects on unincorporated land inside Millbrook Township served by Peoria County Planning and Zoning.

  • Number and type of inspections vary by project.
  • A current permit is needed to schedule an inspection.
  • Inspectors require at least 24 hours' advance notice.

  inspection scheduling notice: >= 24 hours

  “All permits will require inspection, although the number and type of inspections vary by project.”

• Local zoningPresent (with conditions)

  Unincorporated land inside Millbrook Township, if the parcel is served by Peoria County Planning and Zoning.

  • The cited county department expressly serves unincorporated properties; incorporated-property jurisdiction must be confirmed by parcel.

  “Peoria County Planning and Zoning serves unincorporated properties in Peoria County.”

• Zoning districtsPartial

  Unincorporated Millbrook Township parcels served by Peoria County Planning and Zoning.

  • An address or parcel ID is needed for zoning lookup.
  • The opened source identifies an online county GIS map but does not publish a Millbrook-specific district list.

  “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.”

• Who permits septicLocal (with conditions)

  New or replacement onsite wastewater systems on land inside Millbrook Township.

  • A permit is required when a new or replacement onsite wastewater system is needed.
  • The system is individually evaluated for compliance with appropriate codes.

  “At any time, a new or replacement well or onsite wastewater system is needed, permits must be obtained from the Health Department, and are the responsibility of the property owner to apply for and will be individually evaluated to determine compliance with appropriate codes.”

• Septic permitRequired

  New or replacement onsite wastewater systems on land inside Millbrook Township.

  • The property owner must apply.
  • The system will be individually evaluated for code compliance.

  “At any time, a new or replacement well or onsite wastewater system is needed, permits must be obtained from the Health Department, and are the responsibility of the property owner to apply for and will be individually evaluated to determine compliance with appropriate codes.”

• Well permitRequired

  New or replacement wells inside Millbrook Township.

  • The property owner must apply.
  • The well is individually evaluated for compliance with appropriate codes.

  “At any time, a new or replacement well or onsite wastewater system is needed, permits must be obtained from the Health Department, and are the responsibility of the property owner to apply for and will be individually evaluated to determine compliance with appropriate codes.”

• Building in a floodplainRequired

  Development within a Special Flood Hazard Area on unincorporated land inside Millbrook Township served by Peoria County Planning and Zoning.

  • Applies within the SFHA.
  • Development includes construction, repair, replacement, additions, filling, paving, demolition, storage, and land clearing.
  • A Floodplain Development Permit Application must be submitted to Planning and Zoning before development.

  “All development within the SFHA is required to obtain a floodplain development permit prior to starting development projects in a floodplain area.”

• Permit processPublished (with conditions)

  Building-permit applications for unincorporated land inside Millbrook Township served by Peoria County Planning and Zoning.

  • A complete application and required project-specific submittals are required.
  • Incomplete digital submittals are not sent for plan review.
  • Plans must be reviewed and approved before a permit can be issued.

  “A building permit application must be submitted along with the rest of the submittal requirements for your project.”

Still unanswered

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

• Owner-builder exemption — Owner-built residential construction inside Millbrook Township.
• Certificate of occupancy — Occupancy of buildings inside Millbrook Township.
• Minimum dwelling size — Residential dwellings inside Millbrook Township.
• Minimum lot size — Lots inside Millbrook Township.
• Setbacks — Structures inside Millbrook 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.