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

Rules another office applies inside Osco Township

Osco 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 construction in unincorporated Henry County, including land inside Osco township

  • Some uses of land need no building permit; the ordinance states that an application for a certificate of occupancy for a new use of land where no building permit is required is made directly to the zoning enforcing officer.
  • Incorporated municipalities are outside this county rule.

  “Building permits for building/structures and additions to same have been required since 1959.”

• InspectionsRequired

  New buildings in unincorporated Henry County, including land inside Osco township, before a certificate of occupancy issues

  • Inspection is performed by the zoning enforcing officer as part of the certificate of occupancy process.

  “All construction or work for which a permit is required shall be subject to inspection by the building official.”

• Certificate of occupancyRequired

  New buildings constructed after the ordinance effective date in unincorporated Henry County, including land inside Osco township

  • Land vacant on the effective date may not be used for any purpose until a certificate of occupancy has been issued by the zoning enforcing officer.
  • A temporary certificate of occupancy exists under the ordinance; its terms were not extracted.

  “No building or addition thereto, constructed after the effective date of this Ordinance shall be occupied”

• Zoning districtsPublished

  Zoning districts of the Henry County zoning ordinance in unincorporated areas, including land inside Osco township

  • The ordinance names ag-1 agricultural and r-1, r-2, r-3, r-4, and r-5 residential districts; per-district use tables were not extracted.
  • Disconnected territory is classified as ag-1 agricultural district until reclassified.

  “all land lying outside of the incorporated areas in Henry County is hereby divided into the following districts:”

• SetbacksSpecified

  Agricultural buildings and structures in unincorporated Henry County, including land inside Osco township. Applies to farm buildings claiming the agricultural exemption, not to all buildings.

  • Setback from township or private roads is measured from the common right-of-way/property line boundary; the ordinance also gives 73 feet from centerline on roads with 66 feet right-of-way and 65 feet from centerline on roads with 50 feet right-of-way.
  • Setbacks from county, state, and federal highways are 50 feet from the right-of-way/property line (100 feet from centerline on highways with 100 feet right-of-way; 90 feet on highways with 80 feet right-of-way).
  • Agricultural buildings remain subject to floodplain rules.

  minimum setback from township or private road: >= 40 feet (from common right-of-way/property line boundary)

  “TOWNSHIP/PRIVATE ROADS – 40 FEET BACK FROM COMMON RIGHT-OF-WAY/PROPERTY LINE BOUNDARY”

• Manufactured homesLimited

  Manufactured homes located in unincorporated Henry County, including land inside Osco township, under the county zoning ordinance

  • Compliant homes may locate in the listed residential districts only with a building permit and the stated size limits.
  • Homes not built to HUD or Illinois code are not permitted in any zoning district in unincorporated Henry County.
  • Permit, district, and covenant conditions listed in Article VII apply.

  minimum width: >= 24 feet (zoned r-1, r-2, r-3 and r-5 districts, with a building permit) · minimum living area: >= 825 square feet (section 7.6 bulk regulations; or as per deed restrictions or subdivision covenants)

  “MANUFACTURED HOMES/HOUSING IN UNINCORPORATED HENRY COUNTY SHALL BE REGULATED AS FOLLOWS:”

• Agricultural exemptionAvailable (with conditions)

  Farm land, farm dwellings, and farm structures used for agricultural purposes in unincorporated Henry County, including land inside Osco township

  • The ordinance defines a farm as an area comprising ten (10) contiguous acres or more used for agricultural purposes.
  • The claimant must demonstrate that the property and buildings are primarily adapted and used for agricultural purposes.
  • Agricultural buildings and land uses are not exempt from federal, state or local floodplain regulations.

  minimum farm acreage: >= 10 acres (contiguous acres used for agricultural purposes)

  “land, farm dwellings and farm structures which are used for agricultural purposes, while so used”

• Subdividing landRegulated (with conditions)

  Land divisions and plats in unincorporated Henry County, including land inside Osco township

  • Henry County publishes a separate subdivision ordinance; its terms were not read.

  “No land within the subdivision jurisdiction of Henry County [...] shall be subdivided or developed except in compliance with the regulations of this Article”

• Permit feesPublished

  Building permit fees for unincorporated Henry County, including land inside Osco township

  • The fee schedule is a linked PDF; its amounts were not extracted.

  “A Fee shall be paid to the Henry County Treasurer for the total value of all work to be performed including materials and labor.”

• Permit processPublished

  Building permit process for unincorporated Henry County, including land inside Osco township

  • Permit instructions are linked PDFs; their steps were not read.

  “To obtain required building permit, applicant shall provide the following information on the application:”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for a home inside Osco township
• Building code adopted — Which building code applies to construction inside Osco township
• Local zoning — Whether Osco township itself adopts and administers a zoning ordinance
• Minimum dwelling size — Minimum site-built dwelling size in the main single-family residential district in unincorporated Henry County
• Minimum lot size — Minimum lot size in the main residential and agricultural districts in unincorporated Henry County

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.