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

Rules another office applies inside Sefton Township

Sefton 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 code adoptedAdopted (with conditions)

  New residential and commercial construction inside Sefton Township, subject to the applicable statewide baseline and any valid local code.

  • The cited state page says statewide building codes became effective 1/1/2025.
  • For residential construction, applicable code treatment varies depending on whether the jurisdiction adopted a building code and, in a non-code jurisdiction, whether purchaser and builder agreed to a code.
  • This does not establish that Sefton Township adopted its own code or identifies a local enforcement authority.

  statewide-building-code-effective-date: 2025-01-01

  “The State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide building codes effective 1/1/2025.”

• Who permits septicLocal (with conditions)

  New and renovated private sewage disposal systems serving land inside Sefton Township

  • A plan-review application and a $75.00 application fee must be submitted before installation.
  • The proposed system must meet the Illinois Department of Public Health Private Sewage Disposal Licensing Act and Code.
  • Applicant must give 48-hour notification to the Division of Environmental Health before installation.

  plan-review-application-fee: 75 USD · pre-installation-notification: 48 hours

  “The Division of Environmental Health conducts plan reviews, permitting and final installation inspections for new and renovated private sewage disposal systems.”

• Septic permitRequired

  Installation of a private sewage disposal system inside Sefton Township

  • A Private Sewage Disposal System Plan Review Application and $75.00 application fee must be submitted.
  • Permit is granted only if the proposed system meets the Illinois Department of Public Health Private Sewage Disposal Licensing Act and Code.
  • Applicant must give 48-hour notification to the Division of Environmental Health before installation.

  application-fee: 75 USD · pre-installation-notification: 48 hours

  “Before a private sewage disposal system can be installed, a Private Sewage Disposal System Plan Review Application and a $75.00 application fee must be submitted. If the proposed system meets the requirements of the Illinois Department of Public Health Private Sewage Disposal Licensing Act and Code, the applicant will be granted a permit.”

• Septic inspectionRequired

  New and renovated private sewage disposal systems inside Sefton Township

  • Applies to new and renovated private sewage disposal systems.

  “The Division of Environmental Health conducts plan reviews, permitting and final installation inspections for new and renovated private sewage disposal systems.”

• Well permitRequired

  New or modified private water wells inside Sefton Township

  • Illinois Department of Public Health application and $100.00 fee payable to Illinois Department of Public Health must be submitted before installation.
  • A permit is granted only if the proposed well meets the Illinois Water Well Construction Code.
  • Applicant must give 48-hour notification to the Division of Environmental Health before installation.

  application-fee: 100 USD (Payable to the Illinois Department of Public Health.) · pre-installation-notification: 48 hours

  “Before a private water well can be installed, Illinois Department of Public Health, Application for Permit to Construct, Modify or Abandon a Water Well and the $100.00 application fee payable to the Illinois Department of Public Health must be submitted. If the proposed water well meets the requirements of the Illinois Water Well Construction Code, the applicant will be granted a permit.”

• Building in a floodplainRequired

  Construction in regulated floodways in Sefton Township, a downstate Illinois location

  • Applies to floodways of streams in urban areas with drainage area of one square mile or more and rural areas with drainage area of ten square miles or more.
  • A permit is required before construction.
  • If a floodway has not been delineated, the Division generally requires permits for work anywhere in the floodplain.
  • A project meeting terms and conditions of a statewide permit does not need a permit application submittal.

  urban-stream-drainage-area: >= 1 square mile · rural-stream-drainage-area: >= 10 square miles

  “All construction activities in the floodways of streams (the channel and the adjacent portion of the floodplain that is needed to safely convey and store flood waters) in urban areas where the stream drainage area is one square mile or more or in rural areas where the stream drainage area is ten square miles or more must be permitted by the Division prior to construction.”

Still unanswered

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

• Building permit — Private residential construction inside Sefton Township
• Owner-builder exemption — Owner-built residential construction inside Sefton Township
• Inspections — Private residential construction inside Sefton Township
• Certificate of occupancy — New or altered dwellings inside Sefton Township
• Local zoning — Land inside Sefton Township, Fayette County, Illinois

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.