Zoning, building permits and septic rules in North Henderson Township, Illinois

North Henderson Township’s own rules

• InspectionsRequired

  Buildings constructed after the zoning resolution's effective date on unincorporated land within North Henderson Township where a Certificate of Occupancy is required.

  • Construction must be completed and the premises inspected and certified by the Zoning Officer as conforming to the plans and specifications on which the Zoning Certificate was based.
  • The resolution provides a temporary Certificate of Occupancy for up to six months pending regular issuance.

  “No Certificate of Occupancy for a building, or portion thereof, constructed after the effective date of this Resolution, shall be issued until construction has been completed and the premises inspected and certified by the Zoning Officer to be in conformity with the plans and specifications upon which the Zoning Certificate was based.”

• Certificate of occupancyRequired

  A post-effective-date building or addition, and non-agricultural use of land not already in use on the resolution's effective date, on unincorporated land within North Henderson Township.

  • A change from one permitted use to another permitted use is excepted.
  • Utility service, including gas and electric, will not be turned on before issuance.
  • A temporary certificate may be issued for no more than six months pending completion or partial occupancy.

  “No building, or addition thereto, constructed after the effective date of this Resolution shall be occupied, and no land not in use on the effective date of this Resolution shall be used for any non-agricultural purpose until a Certificate of Occupancy has been issued by the Zoning Officer.”

• Local zoningPresent (with conditions)

  Unincorporated land within North Henderson Township; Mercer County administers the applicable zoning resolution, not the township.

  • The cited resolution expressly applies to unincorporated portions of Mercer County; incorporated Village of North Henderson land is not established by this evidence.

  “This Resolution shall divide the unincorporated area of Mercer County into districts, regulate therein the use of land, buildings, and structures;”

• Zoning districtsPartial

  Unincorporated land within North Henderson Township subject to Mercer County zoning.

  • The resolution's table of contents identifies R-3 Seasonal Home, R-4 Mobile Home, commercial, and industrial districts; the full district map and assignment of parcels in North Henderson Township were not verified.

  “ARTICLE XI R-3 SEASONAL HOME DISTRICT................................................................ 54”

• Minimum dwelling sizeSpecified

  Qualifying manufactured homes in AG-1 agricultural or R-1 residential districts on unincorporated land within North Henderson Township.

  • The cited 825-square-foot standard is limited to qualifying manufactured homes and remains subject to the ordinance's permit, lot, width, foundation, and covenant conditions.

  minimum living area: >= 825 square feet (Qualifying manufactured homes under Section 6.1:02.)

  “WITH A BUILDING PERMIT PROVIDING THAT THE MANUFACTURED HOME HAS A MINIMUM WIDTH OF 24 FEET, MINIMUM LIVING AREA OF 825 SQUARE FEET AND A FULL PERIMETER CONCRETE OR CONCRETE BLOCK FOUNDATION CONSTRUCTED ON A FROST PROTECTED FOOTING.”

• Manufactured homesLimited

  Manufactured homes on unincorporated land within North Henderson Township.

  • HUD-code homes may be located in R-4 with a building permit; R-3 for seasonal occupancy with individual permits; AG-1 farm dwellings with conditional-use permits; and certain AG-1/R-1 circumstances subject to the stated restrictions.
  • Homes not compliant with HUD Code or Illinois Code may not locate in any unincorporated Mercer County zoning district.

  AG-1/R-1 qualifying manufactured-home minimum living area: >= 825 square feet (Subject to the location, lot-of-record, permit, width, and foundation conditions in Section 6.1:02.)

  “MANUFACTURED HOMES/HOUSING NOT CONSTRUCTED IN COMPLIANCE TO THE HUD CODE OR IL CODE SHALL NOT BE PERMITTED TO LOCATE IN ANY ZONING DISTRICT IN UNINCORPORATED MERCER COUNTY.”

• Agricultural exemptionAvailable (with conditions)

  Agricultural uses on unincorporated land within North Henderson Township.

  • The exception is limited to a permit or certificate under Section 15.5.01; it does not establish exemption from all other laws or approvals.

  “No permit or certificate shall be required for: [...] Any agricultural uses.”

• Permit processPartial

  Zoning Certificate process for unincorporated land within North Henderson Township.

  • The Zoning Officer may require duplicate plats showing parcel dimensions and a scale drawing showing ground area, height, bulk, building lines, intended use, and other information required for enforcement.

  “In order to insure that the building or structure conforms with all of the provisions of this Resolution, the Zoning Officer may require the following prior to the issuance of a Zoning Certificate:”

Rules another office applies inside North Henderson Township

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

• Who permits septicMixed (with conditions)

  Private sewage disposal systems serving land inside North Henderson Township.

  • IDPH regulates the installation described in the source.
  • Mercer County Health Department identifies Well/Septic Inspections and Permitting among its environmental-health services for Mercer County residents.

  “The Illinois Department of Public Health (IDPH) regulates the installation of all private sewage disposal systems that have no surface discharge (such as septic tanks and seepage fields) as well as those that discharge treated effluent up to 1,500 gallons per day to the ground surface (such as sand filters and aerobic treatment systems).”

• Septic permitRequired

  Private sewage disposal installation inside North Henderson Township.

  • Mercer County Health Department publishes onsite wastewater disposal permit application instructions.
  • The cited state page distinguishes systems with no surface discharge and systems discharging treated effluent up to 1,500 gallons per day to ground surface.

  “This is the permit application to construct or repair an onsite wastewater disposal system in Mercer County. The following procedure shall be followed when submitting an application for approval.”

Still unanswered

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

• Owner-builder exemption — Owner-built residential construction inside North Henderson Township.
• Building code adopted — Land inside North Henderson Township.
• Minimum lot size — Residential land inside North Henderson Township.
• Setbacks — Residential land inside North Henderson Township.
• Lot coverage — Residential land inside North Henderson 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.