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

Rules another office applies inside Plainfield Township

Plainfield 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

  Building construction permitted by Will County inside Plainfield township (unincorporated parcels); the county building codes listed below are the codes the county has adopted

  • Page lists as adopted: 2018 International Residential Code, 2018 International Building Code, 2017 National Electrical Code, 2014 Illinois Plumbing Code, 2021 International Energy Conservation Code with Illinois amendments, 2018 International Mechanical Code, 2018 International Fuel Gas Code, 2018 International Fire Code, 2018 International Swimming Pool and Spa Code, 2018 International Property Maintenance Code, 2018 Illinois Accessibility Code.
  • Amendments are located in the 2021 Will County Building Ordinance; the page does not state which parcels the adoption covers, so the unincorporated-only reading is an inference from the county's role.

  “the following codes have been adopted by will county. amendments are located within the 2021 will county building ordinance.”

• InspectionsRequired

  Construction on unincorporated land inside Plainfield township covered by a Will County building permit

  • The page states a construction inspection process is conducted for each building application; the list of required inspection stages is not stated on the page.
  • Municipal parcels are excluded.

  “each building application submitted shall be reviewed, ultimately approved, and its necessary construction inspection process conducted, to ensure completion in a manner consistent with the health and safety requirements stated within the current will county building ordinance.”

• Local zoningPresent (with conditions)

  Unincorporated land inside Plainfield township, where Will County zoning applies if the township has not adopted its own zoning (not verified on a township page). Parcels inside the Village of Plainfield or City of Joliet are not covered.

  • The county page states the county administers the Will County zoning ordinance; it does not list the parcels or townships it covers.
  • Whether the township itself has adopted zoning was not confirmed; see the township-specific unknown claim.
  • Zoning applications and building-permit zoning review run through the county's Current Planning & Zoning section, 58 E. Clinton Street, Joliet.

  “the current planning & zoning section of the development review division is responsible for the administration of the will county zoning ordinance, land resource management plan, and many other land use plans and ordinances.”

• Who permits septicCounty (with conditions)

  Private sewage (septic) systems on land inside Plainfield township outside municipal limits, handled by the Will County Health Department Environmental Health Division

  • The page describes the county health department's private sewage program; the township's own septic rules were not found.
  • Well and septic offices are in Joliet, Bolingbrook and Monee.

  “the will county health department environmental health division provides inspections of water wells, waste water treatment systems and non-community public water supplies.”

• Septic permitRequired

  Installation of private sewage (septic) systems on land inside Plainfield township outside municipal limits

  • Installation must be in line with issued permits, per the county health department page.
  • Permit fees and the application form were not opened.

  “the private sewage program assures proper installation of wastewater treatment systems that are in line with all codes and issued permits.”

• Septic inspectionRequired

  Wastewater treatment systems on land inside Plainfield township outside municipal limits

  • The page states the county division provides inspections of wastewater treatment systems; the inspection stage and timing are not stated.

  “the will county health department environmental health division provides inspections of water wells, waste water treatment systems and non-community public water supplies.”

Still unanswered

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

• Owner-builder exemption — Owner-builder permit eligibility on unincorporated land inside Plainfield township
• Certificate of occupancy — Occupancy approval for new construction on unincorporated land inside Plainfield township
• Zoning districts — Zoning district map and list for unincorporated land inside Plainfield township
• Minimum dwelling size — Minimum dwelling size on unincorporated land inside Plainfield township
• Minimum lot size — Single-family residential district minimum lot size on unincorporated land inside Plainfield 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.