Accessory Structures in Peoria, IL (2026)
5 verified accessory structures rules for Peoria, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Peoria's Appendix B (Zoning Ordinance) does not include 'accessory dwelling unit' as a defined use category. Single-family districts permit only one principal dwelling per lot; a second self-contained unit generally requires a parcel in a two-family or higher-density district or a variance/special use from the Zoning Board of Appeals. Illinois has no statewide ADU enabling statute, so all authority rests with the home-rule city under 65 ILCS 5/.
Peoria IL ADU Rules (No Codified ADU Use — Zoning Ordinance Controls)
Heavy RestrictionsADU Permits
Peoria does not have a streamlined ADU permit pathway. A second self-contained dwelling on a single-family parcel requires either (1) the parcel to be re-zoned to a two-family or multi-family district, or (2) a use variation or special use permit through the Zoning Board of Appeals. Once zoning approval is obtained, the standard Residential Building Permit and trade permits issue from the Building Safety Division (309-494-8600). Illinois has no statewide ADU enabling statute.
Peoria IL ADU Permits (Variance/Special Use Required)
Heavy RestrictionsADU Impact Fees
Peoria does not levy general residential impact fees on new construction. Charges on a new dwelling unit are limited to building permit fees calculated on construction valuation, electrical/plumbing/mechanical trade permit fees, and water and sanitary sewer tap-on fees if a new service line is installed. School and park land/cash contributions under the Illinois Plat Act (765 ILCS 205/) apply only when a parcel is subdivided or platted, not on a permit for an existing platted lot.
Peoria IL ADU Impact Fees (No General Residential Impact Fee)
Few RestrictionsShed Rules
Peoria requires an Accessory Structure Permit from the Building Safety Division (309-494-8600) for residential sheds, with thresholds and dimensional limits set by Appendix B (Zoning Ordinance). Sheds are typically restricted to rear or side yards, with setbacks from property lines, maximum height around 12-15 feet, and limits on combined accessory structure footprint. Sheds may not be used as habitable space or as a second dwelling unit.
Peoria IL Shed Rules (Appendix B Zoning + Building Safety Permit)
Some RestrictionsGarage Conversions
Converting a Peoria garage into habitable living space requires a building permit from the Building Safety Division (309-494-8600) and zoning review under Appendix B (Zoning Ordinance). A conversion that creates a self-contained second dwelling (kitchen + bath + sleeping area) is restricted under the city's ADU rules — the same variance/special use route through the Zoning Board of Appeals applies. Off-street parking minimums must still be met after conversion.
Peoria IL Garage Conversions (Appendix B Zoning + ADU Restrictions)
Heavy RestrictionsLooking for Peoria County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Peoria city rules.
Accessory Structures in Peoria County →