Do I need a permit for shed or accessory structure in Romeoville?

Yes. In Illinois, shed or accessory structure generally requires a permit, and Romeoville is no exception.

Illinois has no single statewide shed threshold, so the 200 square foot figure quoted from the model International Residential Code does not govern here. Requirements are set by each municipality, and the ones we have checked are stricter than that figure: Wheaton does not require a building permit for a shed of 120 square feet or less, and Joliet requires a shed permit with a Residential Accessory Structures Review Form and a plat of survey showing the shed location. Assume the local number rather than a national one, and ask your building department for the threshold that applies at your address before you buy the shed. Zoning setbacks, easements and lot coverage still apply where no building permit is needed, and running electrical or plumbing to the shed triggers its own permit. Romeoville lists storage sheds among the projects that require a permit, so confirm any small-shed size threshold with the Building Department before assuming an exemption. Accessory structures must meet zoning setbacks and rear-yard placement rules; verify location on your plat of survey. The Village or a utility may temporarily remove structures placed in a utility easement, so avoid easements when siting a shed.