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

Rules another office applies inside Timber Township

Timber 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, additions, alterations, renovations and repairs in unincorporated Peoria County, including unincorporated land inside Timber township

  • Decks over 25 square feet and sheds over 200 square feet also require a building permit.
  • Pools, fences and demolitions also require a permit; erosion control, electrical, plumbing and HVAC permits may also apply.
  • Assumes the parcel is unincorporated; municipal limits inside Timber township were not checked.

  deck size requiring permit: > 25 square feet · shed size requiring permit: > 200 square feet

  “a building permit is required for new construction, additions, alterations, renovations, and repairs of a building or structure.”

• Building code adoptedAdopted

  New construction and alterations under county building permits in unincorporated Peoria County, including land inside Timber township if it is unincorporated

  • Assumes the parcel is outside any incorporated municipality; municipal limits inside Timber township were not checked.
  • The page lists the 2018 International Residential Code, International Building Code, International Existing Building Code, International Mechanical Code, International Fuel Gas Code, International Fire Code and International Property Maintenance Code as adopted and enforced from July 1, 2021.
  • The page says the state plumbing code (Illinois Administrative Code Part 890) applies, not a county plumbing code.
  • The page lists the 2021 Illinois Energy Conservation Code, effective January 1, 2024, and the 1996 Illinois Accessibility Code.

  building code edition: 2018 ICC I-Codes (plumbing governed by state code; energy code 2021 Illinois Energy Conservation Code effective January 1, 2024) · electrical code edition: 2017 NFPA 70 National Electrical Code

  “effective july 1, 2021, peoria county will enforce the 2018 icc i-codes and the 2017 national fire protection association 70: national electric code.”

• InspectionsRequired

  Permitted construction in unincorporated Peoria County, including unincorporated land inside Timber township

  • Inspectors require at least 24 hours advance notice to schedule an inspection (county FAQ).
  • Assumes the parcel is unincorporated; municipal limits inside Timber township were not checked.

  “various inspections will be performed during the building phases and a certificate of compliance will be issued after all final inspections are completed.”

• Permit processPartial

  Building permit process for unincorporated Peoria County, including unincorporated land inside Timber township

  • The county says building permits are now accepted digitally and that over-the-counter acceptance continues.
  • Incomplete submittals are not sent for plan review; the county requires a submittal requirements checklist and a call to schedule an appointment.
  • Process steps beyond review and approval were not fully opened.

  “plans will then need to be reviewed and approved before a permit can be issued.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for a home inside Timber township
• Local zoning — Whether Timber township itself adopts and administers a zoning ordinance for land inside its limits
• Zoning districts — Zoning district map or list for land inside Timber township
• Minimum dwelling size — Minimum dwelling size in the main single-family residential district inside Timber township
• Minimum lot size — Minimum lot size in the main single-family residential district inside Timber 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.