Zoning, building permits and septic rules in Village of River Forest, Illinois

Village of River Forest’s own rules

• Building permitRequired

  Work inside River Forest village limits that the Village lists as requiring a permit (e.g., new buildings and additions).

  • Permit must be applied for before work begins; if no permit, work is stopped, a surcharge is added, and unpermitted work may be subject to removal.
  • Work that does not require a permit is listed separately on the same page (e.g., replacing a water heater, window air conditioners, residential driveway seal coating).
  • Permit list is linked from the page; the full list was not opened.

  “property owners are required to apply for permits prior to the commencement of work.”

• Building code adoptedAdopted (with conditions)

  Construction inside River Forest village limits, under the Village's adopted 2018 International Code Council series (IBC, IRC, IMC, IFC, IEBC and others) effective January 1, 2023.

  • Village page states it has adopted the 2017 National Electrical Code and the 2019 Illinois Accessibility Code and Illinois Energy Conservation Code alongside the 2018 ICC series.
  • The page says the Village 'click[s] on each code to review local amendments'; local amendments were not opened.
  • Subject to Village local amendments listed on the Applicable codes page.

  adoption effective date: 2023-01-01 date

  “the village of river forest has adopted the codes listed below. please note: effective january 1, 2023, the village has adopted the 2018 international code council series.”

• Local zoningPresent (with conditions)

  Land inside River Forest village limits. The Village adopts and administers its own zoning ordinance, Title 10 (Zoning) of the Village Code.

  • Use and dimensional limits are set by district under Title 10; this claim records only that a Village zoning title exists.
  • Zoning review is performed by the Village Building Department (see work-requiring-permit page and ZBA checklist).
  • Specific chapter text (district lists, 10-8 R1 standards) was not opened; see unknown claims.

  “title 10 zoning title 11 river forest special service area number one title 12 condominium regulations”

• Lot coverageSpecified

  R2 zoning district inside River Forest village (maximum lot coverage, buildings and accessory structures), from the Village staff zoning review checklist. R1 district not confirmed.

  • Lot coverage includes principal structure, detached garage, open porch and shed footprints per the checklist's area calculations.
  • Floor area ratio for R2 is 40% per the same checklist (not a requested topic; recorded here for context).

  maximum lot coverage: <= 30 percent of lot area (R2 district)

  “2469.49 30% allowed for the r2 district floor area ratio allowed 3292.65 40% allowed for the r2 district”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of River Forest or Cook County directly.

• Owner-builder exemption — Owner-builder permit exemption inside River Forest village.
• Inspections — Building inspections for work inside River Forest village.
• Certificate of occupancy — Certificates of occupancy for new construction inside River Forest village.
• Minimum dwelling size — Minimum dwelling floor area inside River Forest village.
• Minimum lot size — Minimum lot area for the main single-family district (R1) inside River Forest village.

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.