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

Rules another office applies inside Keithsburg Township

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

• Local zoningPresent (with conditions)

  Unincorporated Mercer County, Illinois land outside city limits, under the county zoning ordinance. Not confirmed from a township source to reach land inside Keithsburg township.

  • The county zoning page says land in city limits is not covered by county zoning records and that the owner must contact the city or village hall of the corporate area.
  • Whether Keithsburg township itself has adopted zoning was not verified; see the separate unknown claim for the township.

  “or it could be in city limits, you when then need to contact city or village hall of the corporates area.”

• Zoning districtsPartial

  Mercer County zoning districts for unincorporated land; the district schedule itself was not opened.

  • The county zoning page confirms a 2023 ordinance exists and was amended for solar and wind; the district map and schedule were not located.
  • No township district map was found.

  “mercer county zoning ordinance 2023 solar ordinance amended 2024 wind ordinance amendment final solar ordinance 1-11-2024”

• Who permits septicLocal (with conditions)

  Septic systems, wells and sewer on land in Keithsburg township; the county zoning page routes these matters to the Mercer County Health Department.

  • The county zoning page only names the health department as the contact; the health department's own licensing and permit rules were not opened.

  “any wells, septic, or sewer would need to contact the mercer county health department 309/582-3759 website: https://www.mchdil.com”

• Permit feesPublished (with conditions)

  Zoning-office fees for permits and certificates in unincorporated Mercer County; applicability inside Keithsburg township was not confirmed.

  • Fees are listed on the county zoning page: the certificate fee is tied to structure valuation, and a zoning change application fee of $200.00 also appears on the page.
  • The full fee schedule in the zoning ordinance was not opened.

  certificate of occupancy fee: 1 USD per $1,000 of structure valuation · building permit application fee: 25 USD (plus $5.00 per $1,000.00 cost of improvements)

  “building permits $25.00 application fee $5.00 per $1,000.00 cost of improvements”

• Permit processPartial

  County zoning applications (zoning changes and related hearings) in unincorporated Mercer County

  • The page describes application submittal timing and the hearing sequence only; building-permit steps and inspection steps are not described.
  • Meetings are held at the county courthouse on a published schedule; the page says the zoning office is part time.

  “application submittal: all applications must be submitted to the zoning officer at least thirty (30) days prior to the zoning board meeting at which it will be reviewed.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption from permits or inspections inside Keithsburg township
• Building code adopted — Building code adoption for land inside Keithsburg township
• Inspections — Building inspections for construction inside Keithsburg township
• Minimum dwelling size — Minimum dwelling size for the single-family residential district inside Keithsburg township
• Minimum lot size — Minimum lot size for the single-family residential district inside Keithsburg 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.