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

It depends. Whether shed or accessory structure needs a permit in Aurora comes down to the details of your project.

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. Aurora reviews sheds and other detached buildings through an Accessory Structure permit application. Small sheds under the city's size threshold may not need a building permit, while larger sheds and detached garages do, so confirm your square footage with the Division of Building and Permits before you build. Even an exempt shed must still meet Aurora zoning rules for setbacks, lot coverage and placement, and structures in a historic or Foxwalk district may need a Certificate of Appropriateness. A plat of survey or site plan is typically requested, and any permit is filed and tracked through the city's eTRAKiT online portal.