Romeoville, IL Accessory Structures: Carport Rules (2026)

Romeoville Zoning Code Chapter 159 governs detached carports as accessory structures. Section 159.020 (Accessory Structures or Use) sets the controlling placement and bulk standards: all accessory structures, buildings and uses (except fences, hedges, driveways, and walkways) must be set back a minimum of 5 feet from any side lot line and 10 feet from any rear lot line, with a 7-foot rear setback in the R-5A district. Detached accessory buildings or structures in residential districts may not exceed one story in height, with total height not exceeding 15 feet from the accessory-structure pad to the ridge, and with a wall height not exceeding 9 feet from the ground floor pad to the top of the finished wall. Section 159.020 also bars accessory structures (except fences) from any public utility, drainage, or pipeline easement except with the written permission of every utility company and the Village. Section 159.044 (Accessory Uses) lists garages, carports, or other parking spaces for the exclusive use of residents or occupants of the premises among the accessory uses permitted in residential zones. An attached carport that is structurally part of the principal dwelling is governed by the principal-structure setbacks of the underlying residence district under Sections 159.060 et seq. (R-1 through R-5A) rather than by the §159.020 accessory-structure setbacks. A building permit is required (Building Division / Permit Coordinator 815-886-5163, Community Development 815-886-7200), construction must comply with the 2021 International Building Code adopted in Section 150.02, and a kit (manufactured plastic or rubber) shed not exceeding 64 square feet is exempted from the Village's concrete-slab requirement under Romeoville's Chapter 150 amendments — this exemption is shed-specific and is not a substitute for the carport permit.