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

Rules another office applies inside Montmorency Township

Montmorency 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

  Building and demolition permits for structures built, moved, altered or demolished in unincorporated Whiteside County, which includes land inside Montmorency township outside any incorporated municipality. The county, not the township, issues these permits.

  • The county page limits the requirement to unincorporated areas; land inside an incorporated municipality is not covered by this statement.
  • Verify the parcel is outside an incorporated municipality before relying on this claim.

  “building and demolition permits are required for all structures built, moved, altered, demolished, destroyed by natural forces in unincorporated areas of whiteside county.”

• Who permits septicCounty (with conditions)

  Private on-site sewage disposal systems for residences in Montmorency township, administered by the Whiteside County Health Department (Rock Falls office).

  • The authority is shown by the county health department's own homeowner permit form; the full private sewage ordinance text was not located within the research budget.
  • State rules for private sewage disposal may also apply and were not reviewed.

  “permit application to construct a private residential on-site sewage disposal system for homeowner whiteside county health department, 1300 w 2nd street, rock falls, il 61071”

• Septic permitRequired

  Installing a private residential on-site sewage disposal system in Montmorency township, through the Whiteside County Health Department.

  • A permit application to construct is filed with the county health department before installation.
  • Application form includes a site plan, lot size and the homeowner's acknowledgment of maintenance responsibility.
  • Installation may proceed after the permit is issued, so status is conditional.

  “permit application to construct a private residential on-site sewage disposal system for homeowner whiteside county health department, 1300 w 2nd street, rock falls, il 61071”

• Permit feesPublished (with conditions)

  Homeowner septic installation permit fee charged by the Whiteside County Health Department. Covers septic systems only; building permit fees are not published on the pages opened.

  • The form also lists a tank-only fee of $360.00.
  • Fee shown on the 2025 form; a newer fee schedule may exist and was not located.

  homeowner septic installation permit fee: 460 USD (tank-only installation listed separately at $360.00)

  “homeowner installation permit fee*: $460.00 tank only: $360.00”

• Permit processPartial

  Building and demolition permit applications for unincorporated Whiteside County, including Montmorency township land outside any municipality.

  • Applications must be filed in person at the county Building and Zoning office, 18819 Lincoln Road, Morrison, IL (per the page's contact block).
  • Permits must be paid at submittal by cash, check, credit card (service fees apply) or money order.
  • The page does not publish plan-review steps, forms by permit type, or turnaround times, so the process is only partly published.

  “all permit applications must be presented in person at the building and zoning office. permits must be paid for at the time of submittal by cash, check, credit card (service fees will apply) or money order.”

Still unanswered

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

• Owner-builder exemption — Whether owner-builders may obtain county building permits without a licensed contractor in Montmorency township.
• Building code adopted — Which building code, if any, the county applies to unincorporated Montmorency township construction.
• Inspections — Whether county building inspections are required for unincorporated Montmorency township construction.
• Certificate of occupancy — Whether a certificate of occupancy is required for new homes in unincorporated Montmorency township.
• Local zoning — Whether Montmorency township itself adopts and administers a zoning ordinance for land inside its limits.

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.