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

Rules another office applies inside Libertyville Township

Libertyville 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

  Construction of a new single-family or two-family dwelling on unincorporated parcels inside Libertyville township

  • A site development permit is also required.
  • If the site has a septic system and/or water well, Lake County Health Department approval is also required.
  • Applications must be made in person by the owner or authorized agent at the Central Permit Facility.
  • Properties inside municipalities follow that municipality's rules.

  “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

  New and existing construction on unincorporated parcels inside Libertyville township

  • Lake County adopted the 2024 International Residential Code for one- and two-family detached dwellings, with county amendments in Chapter 150 of the county code.
  • Adoption on April 29, 2026 of the 2024 IEBC, the 2024 IBC and IRC with local amendments, and the 2023 NEC; effective for unincorporated areas on July 12th.
  • Municipalities inside the township apply their own codes.

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

• Local zoningPresent (with conditions)

  Unincorporated parcels inside Libertyville township. Lake County's Chapter 151 UDO applies there. This is a county rule, not a Libertyville township ordinance.

  • Applies only to unincorporated land; incorporated municipalities inside the township (for example the Village of Libertyville) apply their own zoning.
  • Does not establish whether Libertyville township has its own zoning ordinance.

  “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

  Zoning districts for unincorporated parcels inside Libertyville township

  • District list and maps are on county zoning information pages, not opened; the district schedule was not retrieved.

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

• SetbacksSpecified

  Setbacks on unincorporated parcels inside Libertyville township, set by district in Chapter 151

  • Numeric setback values vary by zoning district and were not retrieved; see followups.

  “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”

• Building heightSpecified

  Building height on unincorporated parcels inside Libertyville township, set by district in Chapter 151

  • Numeric height limits vary by zoning district and were not retrieved; see followups.

  “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”

• Who permits septicCounty

  Onsite sewage (septic) systems on properties inside Libertyville township, including unincorporated parcels governed by Lake County. The Lake County Health Department is the reviewing authority.

  • Applies where a project will contain or alter a septic system; municipal sewer rules may differ inside municipalities.
  • Lake County Health Department reviews and approves property alterations and additions on septic properties.

  “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 homes or alterations with a septic system on properties inside Libertyville township

  • Lake County Health Department approval is required where the site contains a septic system.
  • The Health Department's septic permit application forms are published; the permit scope for new homes was not confirmed beyond this approval.

  “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

  Construction of new private water wells on properties inside Libertyville township, including unincorporated parcels

  • Water well construction and sealing permits are issued by the Lake County Health Department Water Well Program.
  • The program inspects each well after completion and requires a satisfactory water sample before final approval.

  “the water well program issues permits for construction of all new private, semi-private and non-community water wells, and inspects each after its completion to assure it is constructed properly.”

• Subdividing landRegulated (with conditions)

  Land divisions and subdivisions of unincorporated parcels inside Libertyville township

  • Subdivision approvals are handled by Lake County Planning, Building and Development under the UDO.

  “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”

• Short-term rentalsProhibited

  Short-term rental of single-family homes in residential zoning districts on unincorporated parcels inside Libertyville township. Incorporated municipalities apply their own rules.

  • Short-term rental is defined as renting property for less than one month.
  • Bed-and-breakfast use is treated separately under UDO section 151.113(H) when the owner resides on the premises; that section was not opened.

  short-term rental period (less than): < 1 month

  “short-term rental of single-family homes in residential zoning districts is prohibited in unincorporated lake county by the unified development ordinance of the lake county code (udo)”

• Permit feesPublished (with conditions)

  Zoning approval and related fees for unincorporated parcels inside Libertyville township

  • Fee amounts are in the county land development fee schedule PDF, which was not opened.
  • Building permit and health department fees are separate and not verified.

  “there are fees associated with each of these zoning approvals. please see the land development fee schedule (pdf) for details.”

• Permit processPartial

  Building permit application for a new single- or two-family home on unincorporated parcels inside Libertyville township

  • Application must be made in person at the Central Permit Facility, 500 W Winchester Road, Libertyville.
  • Application needs the property address or PIN and the county application form; full checklist not retrieved.

  “your application must be made in person, by either the property owner or authorized agent.”

Still unanswered

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

• Owner-builder exemption — Owner-builder permit eligibility on unincorporated parcels inside Libertyville township
• Inspections — Building inspections for new homes on unincorporated parcels inside Libertyville township
• Certificate of occupancy — Certificate of occupancy for new homes on unincorporated parcels inside Libertyville township
• Minimum dwelling size — Minimum dwelling size for the main single-family district on unincorporated parcels inside Libertyville township
• Minimum lot size — Minimum lot size for the main single-family and agricultural districts on unincorporated parcels inside Libertyville 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.