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

Rules another office applies inside Grant Township

Grant 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 in unincorporated Lake County land inside Grant township

  • Also requires a site development permit.
  • Health department approval if septic or well.

  “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 (with conditions)

  New construction in unincorporated Lake County, including unincorporated land in Grant township

  • Lake County adopts the listed codes with county amendments.
  • 2024 IRC, 2024 IBC, 2024 IEBC and 2023 NEC amendments take effect for unincorporated areas on July 12 after the April 29, 2026 adoption.
  • Illinois state plumbing code applies with county amendments.

  “on april 29th, 2026, the lake county board adopted the 2024 international existing building code and local amendments to the 2024 international building code, the 2024 international residential code, and the 2023 nfpa 70 (national electrical code), which will take effect for unincorporated areas of the county on july 12th.”

• InspectionsRequired

  New home construction in unincorporated Lake County land inside Grant township

  • Inspection schedule details not opened.

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

• Local zoningPresent (with conditions)

  Unincorporated land inside Grant township, Lake County, IL, under the Lake County Unified Development Ordinance (chapter 151) as the county zoning rule. Municipal land inside the township is regulated by its municipality.

  • Applies only to unincorporated Lake County land; not a township ordinance.
  • Zoning, subdivision, signs and site development are included in the UDO.

  “these regulations apply only to lands in unincorporated lake county. municipalities regulate the lands located within their boundaries.”

• Zoning districtsPublished (with conditions)

  Zoning district maps for unincorporated land inside Grant township

  • Township-level zoning maps are published for printing and download; district standards not opened.

  “individual township zoning maps are also available for printing and downloading.”

• Who permits septicMixed (with conditions)

  Septic systems on unincorporated land inside Grant township: Lake County Health Department approval plus Lake County site development permit

  • Health department approval is required in addition to the site development permit.

  “the installation and/or repair/replacement of a septic system (individual sewage disposal (isd) system) may require a site development permit. the lake county health department approval is also required.”

• Well permitRequired

  Private water well for a new home on unincorporated land inside Grant township

  • Health department approval of well location and size, if applicable.

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

• Mandatory utility hookupConditional

  New home in unincorporated Lake County land inside Grant township: water and sewer connection proof

  • Permit application requires proof of payment for connection to public water or community well from the agency having jurisdiction, and proof of payment for sanitary sewer connection where applicable.
  • Whether connection is mandatory when service is available was not verified.

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

• Subdividing landRegulated (with conditions)

  Land divisions and subdivisions on unincorporated land inside Grant township

  • Subdivision is one of the UDO's regulated components; lot split procedure not opened.

  “regulations include: zoning subdivision signs site development (stormwater detention, erosion control, floodplain and wetlands)”

• Driveway accessRequired

  Driveway access for a new septic-site development on unincorporated land inside Grant township

  • Approval from the appropriate highway authority, which may be the township highway commission, LCDOT, IDOT or a private road authority.

  “driveway access approval from the appropriate highway authority such as: township highway commission (pdf), lake county division of transportation (lcdot), illinois department of transportation (idot), private road governing authority.”

• Permit feesPublished (with conditions)

  Building permit fees for new construction on unincorporated land inside Grant township

  • Fees are based on cubic-foot volume of new construction plus flat fees for utilities, per the land development fee schedule (not opened).
  • Fees payable at application by check, cash or card.

  “permit fees are based on the volume in cubic feet of your new construction. in addition, there are flat fees for building utilities such as electric, heat, plumbing fixtures, etc. for more information see the land development fee schedule (pdf).”

• Permit processPublished (with conditions)

  Building permit process for new single-family or two-family homes on unincorporated land inside Grant township

  • Application must be made in person by owner or authorized agent at the Lake County central permit facility, Libertyville.
  • Permit typically issues in about 10 business days after application if compliant.

  permit review time: 10 business days (approximate, from date of application)

  “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 Grant Township or Lake County directly.

• Owner-builder exemption — Owner-builder exemption for homeowners building in unincorporated Lake County land inside Grant township
• Certificate of occupancy — Certificate of occupancy for new homes in unincorporated Lake County land inside Grant township
• Minimum dwelling size — Minimum dwelling size in unincorporated Lake County land inside Grant township, main single-family residential district
• Minimum lot size — Minimum lot size in unincorporated Lake County land inside Grant township, main residential and agricultural districts
• Setbacks — Setbacks in unincorporated Lake County land inside Grant township, by residential and agricultural district

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.