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

Rules another office applies inside Oakdale Township

Oakdale 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

  All construction in Washington County, including unincorporated land inside Oakdale township; the county statement does not single out the township.

  • The county page states the requirement for all construction, including agricultural buildings.
  • The page does not mention any village of Oakdale exception; whether the village of Oakdale applies its own permit process was not checked.

  “all construction in washington county requires a building permit including agricultural buildings!”

• Zoning districtsPartial

  Unincorporated land in Washington County, including Oakdale township outside the village of Oakdale.

  • The flyer names only three common districts: Ag-40, R-1 (rural residential) and R-2 (urban residential).
  • Other districts exist in the county ordinance but are not named on an official page opened here.

  “the three most common districts and their minimum lot sizes are: ag-40 acres, r-1 (rural residential) 2 acres, and r-2 (urban residential) 1 acre.”

• Minimum lot sizeDistrict specific (with conditions)

  Lots in the Ag (agricultural) district on unincorporated land inside Oakdale township.

  • A parcel in an ag district divided into less than 40 acres must be rezoned before construction is allowed, usually to R-1 or R-2.
  • Exceptions stated in flyer: existing homesite since 1980; agriculturally exempt buyer owning at least 40 acres; lots created before 1980 zoning are grandfathered.

  minimum lot size: >= 40 acres (Ag (agricultural) district)

  “the three most common districts and their minimum lot sizes are: ag-40 acres, r-1 (rural residential) 2 acres, and r-2 (urban residential) 1 acre.”

  2 more reviewed findings on this topic

  • District specific (with conditions) — Single-family residential lots in the R-2 (urban residential) district on unincorporated land inside Oakdale township.

    “the three most common districts and their minimum lot sizes are: ag-40 acres, r-1 (rural residential) 2 acres, and r-2 (urban residential) 1 acre.”

  • District specific (with conditions) — Single-family residential lots in the R-1 (rural residential) district on unincorporated land inside Oakdale township.

    “the three most common districts and their minimum lot sizes are: ag-40 acres, r-1 (rural residential) 2 acres, and r-2 (urban residential) 1 acre.”

• Agricultural exemptionConditional

  Parcel divisions in Ag districts on unincorporated land inside Oakdale township; this exemption applies to the rezoning requirement only.

  • The buyer must be actively engaged in agriculture and own at least 40 acres.
  • The exemption is stated as an exception to the rezoning process for a split parcel, not as an exemption from building permits.

  minimum acreage owned: >= 40 acres (agriculturally exempt buyer)

  “if the buyer, the one building on the property is agriculturally exempt (actively engaged in agriculture and owns at least 40 acres)”

• Subdividing landLimited

  Parcel divisions of land inside Oakdale township outside the village of Oakdale.

  • The flyer says the actual division of a parcel is not regulated by the county; the zoning office acts when construction is anticipated.
  • If a parcel of less than 5 acres is divided inside a village or municipality, that town applies the Illinois Plat Act instead of the county zoning office.
  • The city of Nashville handles subdivision compliance within 1.2 miles of its city limits.
  • The flyer says other exemptions apply; contact the zoning office.

  “subdivision rules come into play when a parcel of 5 acres or less is divided”

• Permit feesPublished (with conditions)

  Zoning office building permits for construction on unincorporated land inside Oakdale township.

  • The flyer states a $100 fee for construction over 150 square feet; it does not list other permit fees.
  • The flyer's rezoning figure (about $150) is a separate zoning map amendment cost, not a building permit fee.
  • Fee schedule not verified on the county site beyond this flyer.

  building permit fee: 100 USD (stated for construction over 150 square feet)

  “zoning office issues building permits for any construction. a fee of $100 is charged if over 150 square feet.”

• Permit processPartial

  Permits for construction on unincorporated land inside Oakdale township.

  • The flyer says the zoning office reviews the parcel's zoning before a permit is issued.
  • The zoning page says the office is open Mon-Fri 8am-4pm and that applications can be submitted online.
  • Full application steps and checklist not found on an official page.

  “the washington county zoning office becomes involved when construction or future construction is anticipated.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for permits inside Oakdale township.
• Building code adopted — Building code adopted for construction inside Oakdale township.
• Inspections — Building inspections for construction inside Oakdale township.
• Certificate of occupancy — Certificate of occupancy for new homes inside Oakdale township.
• Local zoning — Whether Oakdale township administers its own zoning ordinance inside its limits.

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.