Accessory Structures in Tinley Park, IL (2026)
5 verified accessory structures rules for Tinley Park, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Tinley Park does not have a permissive accessory dwelling unit (ADU) ordinance. Second kitchens, separate dwelling units, or rental of a secondary unit on a single-family lot are generally not permitted in residential zoning districts. Some properties with legal non-conforming two-family status may exist, but creating new ADUs requires a zoning variance.
Tinley Park ADU Rules
Heavy RestrictionsShed Rules
Tinley Park requires a building permit for sheds over a specified size (typically 120 square feet). Sheds must be located in the rear yard, meet setback requirements from property lines (typically 3 to 5 feet), and may not exceed lot coverage limits. Material and height standards apply, and sheds may not be used as dwelling units.
Tinley Park Shed Rules
Some RestrictionsGarage Conversions
Converting a garage into living space in Tinley Park requires a building permit, zoning compliance, and maintenance of required off-street parking. The conversion may not create a separate dwelling unit. Required parking lost to conversion must be replaced elsewhere on the property, which is often infeasible on typical subdivision lots.
Tinley Park Garage Conversion Rules
Heavy RestrictionsCarport Rules
Tinley Park generally discourages carports in residential districts and may prohibit them or restrict them in favor of enclosed garages. Where permitted, carports require a building permit, must meet setback requirements, and must be constructed of materials consistent with the dwelling. Temporary fabric carports are often prohibited as permanent structures.
Tinley Park Carport Rules
Some RestrictionsTiny Homes
Tinley Park does not have a specific tiny home ordinance. Tiny homes on foundations are regulated as single-family dwellings and must meet minimum floor area, width, and building code requirements. Tiny houses on wheels (THOW) are generally not permitted as dwelling units in residential zoning districts; they are treated as RVs subject to RV parking rules.
Tinley Park Tiny Home Rules
Heavy RestrictionsLooking for Cook County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Tinley Park city rules.
Accessory Structures in Cook County →