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

Rules another office applies inside Hahnaman Township

Hahnaman 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 code adoptedAdopted (with conditions)

  Construction on land inside Hahnaman township that is outside any incorporated municipality (county code applies to unincorporated areas)

  • Adopted by Whiteside County ordinance #18 dated June 20, 2017, per the code text
  • Applies to all land not within an incorporated municipality
  • Source is a third-party-hosted copy of the county code; current county adoption not confirmed on the county site

  building code edition: 2015 International Building Code (as adopted by the county board)

  “pursuant to whiteside county ordinance #18 dated june 20, 2017, all construction in the unincorporated areas shall comply with the 2015 international building codes, as adopted by the county board.”

• Zoning districtsPublished (with conditions)

  Zoning districts for unincorporated Whiteside County, including land inside Hahnaman township outside any incorporated municipality

  • The code publishes district regulations including the A-1, A-R, R-1 through R-3, I-1 and I-2 districts; only the R-1 and agricultural district passages were read
  • Zoning applies only to unincorporated areas (sec. 39-1)

  “the purpose of the one-family residence district is to provide for residential uses on lots smaller than those permitted in the a-1 and a-r districts where soils allow.”

• Minimum lot sizeDistrict specific (with conditions)

  R-1 one-family residence district in unincorporated Whiteside County, including land inside Hahnaman township outside any incorporated municipality

  • Lot size shown as 'or as determined by health department'
  • Existing lots of record and health-department requirements may modify lot area (sec. 39-301)

  minimum lot size: >= 33000 square feet (or as determined by health department)

  “30 feet 33,000 square feet (or as determined by health department) 1.5 du/ac (single-family) 145 feet”

• SetbacksDistrict specific (with conditions)

  R-1 one-family residence district in unincorporated Whiteside County, including land inside Hahnaman township outside any incorporated municipality

  • Centerline setback is also set for R-1 but its value was cut from the extracted text
  • Setbacks may be modified by variance or by county health department requirements (sec. 39-147, sec. 39-301)

  side setback: 10 feet (minimum) · rear setback: 45 feet (minimum)

  “side setback (minimum) rear setback (minimum) ten feet 45 feet centerline setback (minimum) 80 feet”

• Building heightDistrict specific (with conditions)

  R-1 one-family residence district in unincorporated Whiteside County, including land inside Hahnaman township outside any incorporated municipality

  • Height limits do not apply to barns, silos or farm buildings at least 50 feet from every lot line, church spires, water towers and similar structures (sec. 39-73(b))

  maximum building height: <= 30 feet (exemptions in sec. 39-73(b))

  “height (maximum) lot size (minimum) density (buffered subdivision option only; see section 39-242) lot width (minimum) 30 feet 33,000 square feet (or as determined by health department) 1.5 du/ac (single-family) 145 feet”

• Who permits septicCounty (with conditions)

  On-site sewage disposal for a new home on land inside Hahnaman township outside any incorporated municipality

  • Lots not served by public sewer must meet county health department requirements
  • County health department approval of sewage disposal method is required before a lot is built upon

  “however, no lot of any size may be built upon unless the county health department approves the method of sewage disposal and source of water supply.”

• Septic permitRequired

  Construction of a private residential on-site sewage disposal system for a homeowner on land inside Hahnaman township

  • Application is made to the Whiteside County Health Department, 1300 W 2nd Street, Rock Falls, IL 61071
  • Form lists a separate tank-only fee; plan and site details are required on the application
  • An older directory gave a different county health office address; confirm before filing

  homeowner installation permit fee: 460 USD (tank only: $360.00 per the same form)

  “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”

• Off-grid sanitationLimited

  Homes on private septic and well in unincorporated land inside Hahnaman township

  • Sewage disposal method must be approved by the county health department before a lot is built upon
  • Lots not served by public sewer or water must meet county health department requirements

  “however, no lot of any size may be built upon unless the county health department approves the method of sewage disposal and source of water supply.”

• Agricultural exemptionConditional

  Land used for agricultural purposes inside Hahnaman township outside any incorporated municipality

  • Agricultural purposes as defined in 55 ILCS 5/5-12001 are exempt from the chapter's regulations, but land use for agricultural purposes must conform to all building setback lines unless the district regulations provide otherwise

  “regulations, elimination of uses, buildings or structures, or permits for agricultural purposes as defined in 55 ilcs 5/5-12001, except that: a. land use for agricultural purposes must conform to all building setback lines unless otherwise provided in the applicable district regulations; and b. all structures must comply with applicable county construction codes and state and federal law.”

• Subdividing landRegulated (with conditions)

  Land divisions and plats on land inside Hahnaman township outside any incorporated municipality

  • Plat approval is required before any division of land into lots (sec. 39-? subdivision chapter text)
  • Building permits are not issued for lots in a subdivision until the required final plat is approved
  • Lots not served by public sewer or water must meet county health department requirements

  “(1) the rules and standards governing plats and subdivisions of land contained in this chapter apply to all land not within an incorporated municipality.”

Still unanswered

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

• Building permit — Building permits for new dwellings on land inside Hahnaman township
• Owner-builder exemption — Owner-builder construction on land inside Hahnaman township
• Local zoning — Whether Hahnaman township itself adopts and administers a zoning ordinance
• Minimum dwelling size — Minimum floor area for a home on land inside Hahnaman township
• Lot coverage — Maximum lot coverage for a home on land inside Hahnaman 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.