Accessory Structures in Romeoville, IL (2026)
4 verified accessory structures rules for Romeoville, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Romeoville does not currently permit accessory dwelling units (ADUs) as a by-right use in residential zones. The Village's Zoning Code (Chapter 159) does not include ADU provisions. Illinois HB 2373 (2024) encourages ADU development statewide, but Romeoville has not adopted local ADU regulations.
Romeoville ADU Rules & Accessory Dwelling Unit Regulations
Heavy RestrictionsShed Rules
Sheds and accessory structures in Romeoville require building permits and must comply with Chapter 159 Zoning Code setback and size requirements. The Building Division at 815-886-7200 handles permit applications. A plat of survey may be required. The Village adopts the International Building Code for construction standards.
Romeoville Shed Rules & Outbuilding Regulations
Some RestrictionsGarage Conversions
Garage conversions in Romeoville require building permits and must comply with Chapter 159 Zoning requirements. Converted garages must maintain required off-street parking. Illinois has no state-mandated garage-to-ADU conversion allowance. Contact the Building Division at 815-886-7200 for permit requirements and current zoning guidance.
Romeoville Garage Conversion Rules & Requirements
Some RestrictionsCarport Rules
Romeoville treats a detached carport as an accessory structure governed by Chapter 159 (Zoning Code). Section 159.020 requires accessory structures to be set back at least 5 feet from any side lot line and 10 feet from the rear lot line (7 feet rear in R-5A), capped at one story with a 15-foot ridge height and 9-foot wall height. Carports are listed as a permitted accessory use under Section 159.044, and a Building Division permit is required.
Carport Rules in Romeoville
Some RestrictionsLooking for Will County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Romeoville city rules.
Accessory Structures in Will County →