Building permits, zoning and land rules in Peoria County, Illinois

Peoria County requires building permits for new homes, additions, remodels, alterations, repairs, garages, pools, electrical, HVAC and plumbing work on unincorporated land¹. Sheds of 200 square feet or less, re-siding, reshingling and cosmetic upgrades are listed as exempt, but sheds still must meet setback and accessory-structure limits; every building permit application requires a site plan¹. County-permitted projects require inspections, a current permit to schedule them and at least 24 hours’ notice¹. Owners may apply for building permits themselves, but must still obtain required trade and health approvals⁶. Illinois also has a narrow owner-occupant plumbing exemption, subject to the state plumbing code and local plumbing-permit requirements^8,9.

Peoria County Planning and Zoning accepts digital building permit submissions at buildingpermits@peoriacounty.org and encourages appointments for zoning services³. Complete, readable plans may be submitted digitally or over the counter and must be reviewed and approved before building permit issuance². New residential construction costs $0.50 per square foot with a $750 minimum, plus a $45 technology fee; residential additions or alterations have a $250 minimum plus the technology fee¹⁰. The published fee schedule lists a $160 floodplain development permit fee and a 3% credit-card service charge, while the Planning and Zoning counter says it accepts check or exact cash; confirm payment arrangements when fees are ready^3,10. Pekin, a city reaching into Peoria County but mainly in Tazewell County, issues its own building permits¹¹. Septic permits for Peoria County property remain with the Peoria City/County Health Department⁴.

Peoria County zoning applies to unincorporated property³. Peoria Heights has its own zoning, as does Pekin, which reaches into Peoria County but lies mainly in Tazewell County^12,13. Septic permits for property in Peoria County remain with the Peoria City/County Health Department⁴. Setbacks and height limits depend on the applicable district¹⁴. County land splits may require special-use approval, a survey, recording or access conditions; in the A-1 Agricultural Preservation district, a split below the 40-acre minimum requires a Special Use¹⁵. Most unincorporated short-term rentals require County Board Special Use approval as Overnight Accommodations¹⁶.

The Peoria City/County Health Department acts as the local Health Authority for private onsite wastewater systems under the Illinois private sewage code and the county ordinance⁴. A Health Department permit is required before constructing, repairing or altering an onsite wastewater system⁴. The Health Authority may refuse an onsite permit when sanitary sewer is available, including a practical permitted connection within 300 feet of a single-family property's boundary; an onsite system may still be allowed if a conforming individual sewer connection cannot be made⁴. Installation or repair must be inspected before backfilling, and final approval follows a visual compliance inspection⁴. Only 35.9% of county soils are rated without severe limitations for a conventional drain field, so make septic feasibility an early purchase contingency¹⁷. A well needs its own permit: the application to construct or modify a water well carries a $100 permit fee, and the person constructing or deepening a permitted well must notify the Department or approved local health department at least two days before work begins¹⁸. The Health Department provides online records for onsite wastewater systems and wells installed after 2009¹⁹.

Unincorporated Peoria County allows temporary RV shelter on the same parcel when a fire or natural disaster makes a residence uninhabitable, during rehabilitation or reconstruction²⁰. A temporary use permit is required as soon as practicable after emergency occupancy begins, with health-department water and sewage approvals before issuance; the term is at most 6 months unless the Zoning Administrator grants an extension for demonstrated need²⁰. The RV must be at least 10 feet from the dwelling being rebuilt, meet principal-structure side and rear setbacks, and be removed after the replacement or rehabilitated home receives an occupancy permit²⁰. County RV parks require Special Use approval and patrons must maintain a permanent residence outside the park; RVs need at least 10 feet from interior drives, adjacent RVs and buildings, plus district setbacks²¹. These provisions do not establish permission for ordinary RV living while building a new home; ask Planning and Zoning about that use, tiny-home occupancy and minimum dwelling size, which we could not confirm^3,20,21.

1. Confirm that the parcel is unincorporated, identify its zoning district, and ask Planning and Zoning for the applicable use, lot, setback and height rules^3,14.
2. Check whether a land split or A-1 lot-size issue requires an additional county approval¹⁵.
3. Ask the Health Department whether sewer is considered available; if not, obtain the onsite wastewater permit before construction⁴.
4. Determine whether floodplain development approval or a county-road entrance permit is needed before site work^5,7.
5. Submit complete, readable plans to Planning and Zoning; plans must clear review before permit issuance².
6. Confirm the project fee, including the applicable technology fee, before payment¹⁰.
7. Schedule and pass the required building and septic inspections before covered work is closed^1,4.

Start with jurisdiction, zoning and legal access: county zoning serves unincorporated parcels, land splits are regulated, and a new residential, commercial or field entrance onto a county road needs Highway Department approval before construction^3,7,15. For a state, municipal or township road, contact that road authority instead⁷. Development in a Special Flood Hazard Area requires a county floodplain development permit before work begins, and the county treats filling, paving, demolition, storage and land clearing as development too⁵. Confirm both sewer availability and septic feasibility because an available sewer can prevent an onsite permit, and only 35.9% of county soils are rated without severe limitations for conventional drain fields^4,17. A new, modified or abandoned well requires a state or approved-local-health-department permit before work²². The median property-tax bill is $3,416 per year¹⁷.