Tiny home rules in Peoria County, IL — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
How Peoria County treats a tiny home depends on its foundation. A tiny house on a permanent foundation is a dwelling that must meet the building code and minimum floor area; a tiny house on wheels is handled as an RV or manufactured home.
In Peoria County and the City of Peoria a tiny home on a permanent foundation is treated as a single-family dwelling and must meet the adopted building code, utility and sewer or septic connections, and the zoning district's minimum floor area. Appendix Q of the International Residential Code provides construction standards for houses of 400 square feet or less and can apply. A tiny house on wheels is generally classified as a recreational vehicle or manufactured home and cannot be parked and lived in on a residential lot outside an approved manufactured-home or RV park. Because Illinois has no statewide ADU mandate, using a tiny home as a backyard second dwelling depends entirely on local zoning approval.
Living in a tiny house on wheels on a residential lot, or occupying a foundation-built tiny home without a certificate of occupancy, is a zoning and building violation subject to fines, relocation, or removal.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Peoria County's tiny homes rules stack up against other locations.
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