Oak Park, IL Accessory Structures: Tiny Homes (2026)

Oak Park's zoning ordinance does not specifically address tiny homes as a dwelling category. Tiny homes on wheels (THOWs) are classified as recreational vehicles under the village code and may not be used as permanent dwellings on residential lots. RVs cannot be occupied as living quarters while parked on residential property. Tiny homes on permanent foundations must meet the village's minimum dwelling unit size requirements. Oak Park's zoning code establishes minimum floor area requirements for dwelling units (typically around 500-600 sq ft for efficiency units, varying by district). A tiny home on a permanent foundation that meets the minimum size requirement, building code standards, and zoning requirements could potentially be approved as an ADU or accessory dwelling. Such a structure would need to comply with all building codes for habitable space including foundation, structural, electrical, plumbing, fire safety, and energy efficiency standards. The Illinois Residential Code sets statewide minimum standards that apply. Any tiny home structure requires a building permit and full plan review.