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

Rules another office applies inside Flagg Township

Flagg 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

  New construction on unincorporated land inside Flagg township (the county calls its building permit a zoning certificate)

  • Construction may proceed only after the zoning certificate is issued.
  • The county FAQ says the zoning certificate is what people generally call a building permit in unincorporated Ogle County.
  • Parcels inside an incorporated city or village within the township must contact that city or village for permit requirements.
  • Permits are required for decks, patios, sheds, garages, accessory structures, additions, and commercial and industrial buildings, per the FAQ list.

  “generally, any new construction requires a zoning certificate to be obtained prior to beginning construction”

• Building code adoptedNot adopted

  Unincorporated land inside Flagg township (Ogle County has no building code for areas outside incorporated cities and villages)

  • Parcels inside an incorporated city or village within the township are governed by that city or village, not the county.
  • The county FAQ says cities and villages within Ogle County have adopted building codes; those codes are not addressed here.

  “ogle county has not adopted a building code”

• InspectionsLimited

  Construction on unincorporated land inside Flagg township

  • The county conducts zoning compliance inspections (stake-out, footings, final) that the county says are not building inspections, because the county has no building code.
  • Under the state law the FAQ cites (20 ILCS 3105/10.09-1), a newly constructed commercial building in a non-building-code jurisdiction must be inspected by a qualified inspector before occupancy.

  “these inspections are not building inspections.”

• Certificate of occupancyRequired

  Completed construction on unincorporated land inside Flagg township

  • Occupancy certificate is issued on completion of the project and when the use of a tract changes.
  • The FAQ exempts agricultural buildings from the occupancy certificate.

  “(required for all projects with the exception of agricultural buildings)”

• Accessory dwellingsProhibited

  A second dwelling unit, such as a basement apartment or one in an accessory building, on a lot in unincorporated Flagg township

  • The county says the zoning ordinance limits a lot to one dwelling unit regardless of lot size, with some limited exceptions, which the FAQ does not list.
  • Permits are required for accessory structures, per the county FAQ.

  “accordingly, the creation of a small apartment in the basement of a house or in an accessory building would constitute the establishment of a second dwelling unit on the lot and would be a violation of the zoning ordinance.”

• Who permits septicCounty (with conditions)

  New septic systems and repairs on private land inside Flagg township, including unincorporated land

  • The county health department applies the Illinois private sewage code (IDPH rules) as adopted in the county sewage disposal code, per the county page.
  • Septic installers and pumpers are licensed by IDPH and by Ogle County.

  “the ogle county health department permits new septic system installations and repairs in accordance with the ogle county sewage disposal, private systems and idph administrative code part 905 private sewage disposal code”

• Septic permitRequired

  New house septic systems and repairs inside Flagg township

  • Application is submitted by a licensed septic installer with a site plan, elevations sheet and maintenance agreement.
  • The county says the zoning department needs the septic permit before it issues a building permit.
  • Review usually takes 2-5 business days.

  “the zoning department needs the septic system permit before they will issue a building permit.”

• Septic inspectionRequired

  New septic systems inside Flagg township

  • Inspection occurs after permit approval and before the system is covered.

  “after permit approval, ochd will complete an onsite inspection before the system gets covered up.”

• Subdividing landRegulated (with conditions)

  Division of land on unincorporated land inside Flagg township

  • Preliminary and final plat approval by the county, per the county page.
  • Even one-lot subdivisions must often be approved by the county; some are exempt, and some are approved by the planning & zoning administrator as plat officer.

  “the planning & zoning department is charged with regulating the division of land in the unincorporated areas of ogle county.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for a home built by the owner in unincorporated Flagg township
• Local zoning — Whether Flagg township itself adopts and administers a zoning ordinance for land inside its limits
• Minimum dwelling size — Minimum dwelling size in the single-family residential (R-2) and agricultural (AG-1) districts in unincorporated Flagg township
• Minimum lot size — Minimum lot area in the single-family residential (R-2) and agricultural (AG-1) districts in unincorporated Flagg township
• Setbacks — Front, side and rear setbacks in the single-family residential (R-2) and agricultural (AG-1) districts in unincorporated Flagg 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.