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

Rules another office applies inside Antioch Township

Antioch 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 single-family or two-family dwelling construction on unincorporated Lake County land inside Antioch Township

  • Application must be made in person by the property owner or an authorized agent at the Central Permit Facility, 500 W Winchester Road, Libertyville, IL 60048.
  • A site development permit is also required with the building permit.
  • Construction may proceed only after the permit is issued.

  “the construction of a new single family or two family dwelling in unincorporated lake county requires a building permit and a site development permit.”

• Building code adoptedAdopted

  Unincorporated Lake County land inside Antioch Township

  • The 2024 International Residential Code governs construction on one- and two-family detached dwellings.
  • Amendments to the 2024 IBC, IEBC, 2024 IRC and 2023 NEC take effect for unincorporated areas on July 12 per the county page; the page states the adoption date as April 29, 2026.
  • An automatic sprinkler system shall be installed in one- and two-family dwellings; fire protection district contact required for sprinkler design.

  “the lake county board has adopted the following building codes with amendments.”

• InspectionsRequired

  New single-family or two-family dwelling construction on unincorporated Lake County land inside Antioch Township

  • Inspections occur at various stages of construction; the page does not list the stages or the inspection schedule.

  “your project will require inspections at various stages of construction.”

• Local zoningPresent (with conditions)

  Unincorporated Lake County land inside Antioch Township (not the incorporated Village of Antioch); this is county zoning, not a township ordinance

  • The UDO establishes, within each district, the uses (i.e. a single-family house or a commercial establishment) that are permitted, allowed conditionally, or prohibited.
  • Lake County zoning applies to unincorporated land only; land inside the Village of Antioch is governed by village zoning.

  “the unincorporated areas of lake county are regulated by the provisions of chapter 151:unified development ordinance (udo) of the lake county code of ordinances.”

• Zoning districtsPublished (with conditions)

  Zoning districts for unincorporated Lake County land inside Antioch Township

  • The Zoning Approvals page says the districts are shown on accompanying zoning maps; the district list and dimensional tables were not opened.

  “regulating zoning under chapter 151 (udo) and accompanying zoning maps, the unincorporated areas of lake county are divided into zoning districts.”

• Who permits septicCounty (with conditions)

  Septic systems for land inside Antioch Township outside the Village of Antioch; the Lake County Health Department reviews septic and well projects

  • Construction must meet horizontal separation distances from the septic tank, septic field (primary and reserve areas) and water well.
  • The Lake County Health Department's service area for this township was not separately confirmed on an official page.

  “property alteration and/or addition projects on properties with a septic system or well must be reviewed and approved by the lake county health department.”

• Septic permitRequired

  New house with a septic system on unincorporated Lake County land inside Antioch Township

  • Health Department approval must be stamped on all building plan sets for a septic-served property.
  • An onsite wastewater treatment system construction permit application exists on the Health Department forms page.

  “if the site will contain a septic system (individual sewage disposal (isd) system) and/or water well, a lake county health department approval is also required.”

• Well permitRequired

  New house served by a private well on unincorporated Lake County land inside Antioch Township

  • Applies where a well is used (the page says 'if applicable'); well construction and sealing permit application listed on the Health Department forms page.

  “well: health department approval regarding the location and size of well (if applicable).”

• Mandatory utility hookupConditional

  New house on unincorporated Lake County land inside Antioch Township, where public water or sewer is available through the agency with jurisdiction

  • Permit application requires proof of payment for connection to public water or sanitary sewer from the government agency having jurisdiction, where applicable.
  • Exception: a letter may be submitted from the utility company stating they have no objection to the issuance of a permit prior to the payment of connection fees.
  • The page does not state a distance-based mandatory connection rule; not established.

  “proof of payment for connection to sanitary sewer from the government agency having jurisdiction (if applicable).”

• Subdividing landRegulated (with conditions)

  Land divisions and subdivisions in unincorporated Lake County land inside Antioch Township

  • Subdivision approvals and subdivision standards are listed on the zoning page as UDO topics; the subdivision rules themselves were not opened.

  “in addition, the udo contains regulations relating to: density and dimensional (height and setback) standards impervious surface nonconformities site capacity, site plan review and natural resource protection site development subdivision standards”

• Permit feesVariable (with conditions)

  Building permit fees for new construction on unincorporated Lake County land inside Antioch Township

  • Fees are based on the cubic-foot volume of new construction, plus flat fees for utilities such as electric, heat and plumbing fixtures.
  • The fee amounts are in the county 'land development fee schedule (pdf)', which was not opened.

  “permit fees are based on the volume in cubic feet of your new construction.”

• Permit processPublished

  Building permit process for new single-family or two-family dwellings on unincorporated Lake County land inside Antioch Township

  • Application must be made in person by the owner or authorized agent at the Central Permit Facility, 500 W Winchester Road, Libertyville.
  • Required items include five sets of grading plans (ten if on septic), two complete sets of building plans, and the application form.
  • Permit is expected in about 10 business days from application if compliant; inspections follow at various stages.
  • Construction and demolition debris recycling report and plan due at least 10 business days before final inspection for projects of 1,500 sq ft or more gross floor area.

  expected permit issuance: 10 business days (if project is in compliance with all applicable codes and ordinances)

  “if your project is in compliance with all the applicable codes and ordinances, you should receive your building permit in about 10 business days from the date of application.”

Still unanswered

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

• Owner-builder exemption — Owner-builder permit exemption for unincorporated Lake County land inside Antioch Township
• Certificate of occupancy — Certificate of occupancy for new dwellings on unincorporated Lake County land inside Antioch Township
• Minimum dwelling size — Main single-family residential district in unincorporated Lake County land inside Antioch Township (district name not verified)
• Minimum lot size — Main single-family residential district in unincorporated Lake County land inside Antioch Township (district name not verified)
• Setbacks — Main single-family residential district in unincorporated Lake County land inside Antioch Township (district name not verified)

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.