Garage conversion rules in Oak Lawn, IL — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions in Oak Lawn require building permits and zoning compliance. No IL statewide garage ADU mandate. Required parking must be maintained.
Illinois has no state-mandated allowance for garage-to-ADU conversions. Oak Lawn requires building permits for garage conversions and compliance with Village zoning regulations. Required off-street parking must be maintained. Contact Community Development at 708-499-7800. This garage conversions rule under Oak Lawn's accessory structures ordinances applies to properties within Oak Lawn city limits. For current statutory text, amendments, enforcement procedures, fines, appeal options, and any exemptions that may apply to your situation, contact Oak Lawn code enforcement directly or consult the official Illinois municipal code library. Ordinances change periodically; always verify with local staff before relying on summary information.
Unauthorized garage conversions to dwelling units are subject to fines, cessation orders, and potential requirement to restore the original use.
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Side-by-side rule comparisons with other cities in Cook County.
See how other cities in Cook County handle garage conversions.
See how Oak Lawn's garage conversions rules stack up against other locations.
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