Zoning, building permits and septic rules in Grand Rapids Township, Illinois

Rules another office applies inside Grand Rapids Township

Grand Rapids 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 (with conditions)

  New construction in the unincorporated portion of Grand Rapids Township.

  • Does not establish rules inside a corporate city or village boundary.
  • County notice states the updated code years are effective January 1, 2025.
  • County notice states major amendments include wind load 107 mph and deletion of energy-efficiency and sprinkler-system provisions from IRC 2024.

  International Residential Code: 2024 · National Electrical Code: 2023

  “NOTICE: Effective January 1, 2025; LaSalle County Building codes will be updated to the following code years with amendments: International Residential Code 2024, International Building Code 2024 International Fire Code 2024, the International Mechanical Code 2024, International Fuel Gas Code 2024, and National Electrical Code 2023.”

• Certificate of occupancyRequired

  New structures subject to the county building-permit process in the unincorporated portion of Grand Rapids Township.

  • Health Department response/approval certification for the well and septic is required by building inspectors before an occupancy permit is issued.
  • The brochure says at least 48 hours are needed for the Health Department response/approval certification.

  “Occupancy and use of a structure (which includes but is not limited to moving furniture and personal items into the structure) is forbidden without an Occupancy Permit.”

• Who permits septicCounty (with conditions)

  Private sewage disposal systems serving land inside Grand Rapids Township, subject to the LaSalle County Health Department's jurisdiction.

  • Permit construction requires a completed application, fee, and onsite survey by department personnel.

  “A permit for construction will not be issued until a completed application and fee have been submitted to the LaSalle County Health Department and an onsite survey performed by department personnel.”

• Septic permitRequired

  Construction of a private sewage disposal system inside Grand Rapids Township.

  • Completed application and fee must be submitted.
  • An onsite survey by LaSalle County Health Department personnel is required before construction permit issuance.

  private sewage disposal system permit application fee: 230 USD (Fee is returned if the permit is denied.)

  “This is your permit application. There is a two hundred thirty ($230.00) dollar application fee for a private sewage disposal system permit. If a permit is denied, the fee shall be returned to the applicant.”

• Septic inspectionRequired

  Private sewage disposal-system construction inside Grand Rapids Township.

  • Health Department must be notified for final inspection before backfilling.
  • Inspection produces a statement whether the system and/or well meets current Illinois Department of Public Health standards.
  • Inspection and permit process do not create a warranty.

  “The Health Department must be notified for a final inspection sewage disposal system construction before backfilling.”

• Well permitRequired

  Construction of a new well inside Grand Rapids Township.

  • Requirement applies before construction of a new well.

  “Prior to the construction of a new well, a permit from the Health Department is required to ensure the protection of groundwater.”

• Subdividing landRegulated (with conditions)

  Property subdivision in the unincorporated portion of Grand Rapids Township.

  • County advises contacting Land Use before subdividing to verify compliance with the county subdivision ordinance, zoning ordinance, and Illinois Plat Act.

  “Please contact our department prior to subdividing property in order to verify that the split will comply with the LaSalle County Subdivision, LaSalle County Zoning Ordinance, and the Illinois Plat Act.”

• Building in a floodplainRequired

  Man-made development in floodplains in the unincorporated portion of Grand Rapids Township.

  • County says its floodplain ordinance requires permits for almost any man-made development activity in the floodplain.
  • County report says ordinance compliance is required for all construction and development occurring in floodplains of unincorporated LaSalle County.

  “The LaSalle County Floodplain Ordinance requires permits for almost any “man-made” development activity occurring in the floodplain.”

• Permit feesPublished (with conditions)

  LaSalle County Health Department environmental-health permits serving Grand Rapids Township, including septic and well permits.

  • Published fee schedule states it was approved by the County Board effective January 1, 2018.
  • Fees page lists sewage construction/modification permits at $230 and water-well permits at $100.

  sewage construction and modification permit fee: 230 USD · water well permit fee: 100 USD

  “LaSalle County Health Department Environmental Health Fees Approved by the LaSalle County Board effective January 1, 2018.”

Still unanswered

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

• Owner-builder exemption — Owner-built residential construction inside Grand Rapids Township.
• Local zoning — Land inside Grand Rapids Township.
• Minimum dwelling size — Residential districts in the unincorporated portion of Grand Rapids Township.
• Minimum lot size — Residential districts in the unincorporated portion of Grand Rapids Township.
• Setbacks — Residential districts in the unincorporated portion of Grand Rapids 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.