Bolthole Index

Mercer County, Illinois

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

Rivoli Township is a township in Mercer County, Illinois. 5 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Mercer County page.

Answers from the rulebook for Rivoli Township

Rules another office applies inside Rivoli Township

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

  • Local zoningPresent (with conditions)

    Unincorporated land inside Rivoli Township, Mercer County, Illinois; incorporated municipal land within the township is outside the stated county zoning scope.

    • The resolution expressly applies to the unincorporated area of Mercer County.
    “This Resolution shall divide the unincorporated area of Mercer County into districts, regulate therein the use of land, buildings, and structures; regulate the location, erection, construction, reconstruction, and alteration of such buildings and structures; regulate the height, number of stories, and size of all buildings and other structures ; and regulate the density of population.”
  • Zoning districtsPublished (with conditions)

    Unincorporated land inside Rivoli Township, subject to the Mercer County zoning district map and resolution.

    • The resolution says district maps are filed in the Mercer County Board Room and open to public reference during office hours.
    “This Resolution shall divide the unincorporated area of Mercer County into districts, regulate therein the use of land, buildings, and structures; regulate the location, erection, construction, reconstruction, and alteration of such buildings and structures; regulate the height, number of stories, and size of all buildings and other structures ; and regulate the density of population.”
  • Manufactured homesLimited

    Mobile, manufactured, modular, and panelized home occupancy on unincorporated land inside Rivoli Township.

    • The home must be installed in accordance with the manufacturer's installation requirements.
    • The home must be on a State of Illinois accepted and/or approved permanent foundation with wheels, axles, and hitch removed.
    • The home must comply with other applicable federal, state, and local requirements.
    • A building permit is required.
    “No mobile/manufactured/modular or panelized home shall be installed, constructed, or otherwise be placed in the unincorporated limits of Mercer County for the purpose of use or occupancy unless in accordance with the following: A. All mobile/manufactured/modular or panelized homes shall be installed in accordance with the manufacturer's installation requirements on a State of Illinois accepted and/or approved permanent foundation with wheel, axles and hitch removed.”
  • Permit feesPublished (with conditions)

    Mercer County building-permit applications for projects on unincorporated land inside Rivoli Township.

    • Tower or turbine permits use a separate per-foot fee.
    • The application identifies a fee-paid field.

    building permit base fee: 25 USD (Plus $5 per $1,000 in improvements cost.) · improvement-cost fee: per 5 USD per $1,000 (Applied in addition to the $25 building-permit fee.) · tower/turbine fee: per 25 USD per foot (In addition to the $25 base fee.)

    “APPLICATION FOR MERCER COUNTY BUILDING PERMIT Mercer County Zoning Office - 100 SE 3rd Street, Aledo, IL 61231 Zoning Officer – cell: (309)525-3799, e-mail: [email protected] Building permit: $25 plus $5 per $1000 in improvements (cost) $25 plus $25.00 per foot for towers / turbines”
  • Permit processPartial

    Mercer County building-permit applications for projects on unincorporated land inside Rivoli Township.

    • The application requires a legal description, township, parcel number, site address, proposed improvements, estimated cost, and builder information.
    • A property sketch must show dimensions, proposed building and structure locations, and other information required by the Zoning Officer.
    • Required setbacks must be included on the sketch.
    “exact location of all proposed buildings and structures”

Still unanswered

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

  • Owner-builder exemption — Owner-built residences inside Rivoli Township.
  • Building code adopted — Land inside Rivoli Township, Mercer County, Illinois.
  • Inspections — Residential construction inside Rivoli Township.
  • Minimum dwelling size — Dwellings inside Rivoli Township.
  • Minimum lot size — Residential lots inside Rivoli Township.
17 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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.

Unanswered questions are usually a sign that Rivoli Township publishes no rule on the point, not that none exists. Mercer County’s page lists the county offices to call.

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