Zoning, building permits and septic rules in New Trier Township, Illinois

Rules another office applies inside New Trier Township

New Trier Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

• Who permits septicLocal (with conditions)

  Private sewage disposal systems proposed inside New Trier Township.

  • The Cook County Department of Public Health source states that its Cook County coverage excludes incorporated Barrington Hills, Inverness, Palos Park, and South Barrington, each of which has its own IDPH-approved septic ordinance.

  “reviews and approves all private sewage disposal systems”

• Septic permitRequired

  Private sewage disposal systems proposed inside New Trier Township.

  • Submit a completed private sewage disposal application, seven scaled plan sets showing pertinent system design information, a soil report and other applicable documents, and payment by check or money order to the Cook County Department of Public Health.
  • The Cook County Department of Public Health source states that its Cook County coverage excludes incorporated Barrington Hills, Inverness, Palos Park, and South Barrington.

  plan sets: 7 sets (Plans must be to scale and show pertinent system design information.)

  “requires homeowners and contractors to get CCDPH approval”

• Off-grid sanitationAllowed (with conditions)

  Private sewage disposal systems for homes and businesses inside New Trier Township that do not have access to sewer services.

  • CCDPH review and approval is required.
  • The cited Cook County coverage excludes incorporated Barrington Hills, Inverness, Palos Park, and South Barrington.

  “a safe and viable way of disposing sewage”

Still unanswered

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

• Building permit — Building work inside New Trier Township.
• Owner-builder exemption — Owner-built residential construction inside New Trier Township.
• Building code adopted — Building construction inside New Trier Township.
• Inspections — Building work inside New Trier Township.
• Certificate of occupancy — Occupancy of buildings inside New Trier 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.