Chicago does not require a building permit for a one-story detached storage shed 150 square feet or smaller, 15 feet or lower, and without plumbing.
The exemption does not waive zoning, landmark, public-way, electrical, foundation, fire-safety, placement, or other code requirements.
What this tells youComputed rule answer
How precise this isComputed rule answer
Official data checkedChicago small permanent structures
Next stepCheck the official shed/accessory-structure rules with your project dimensions.
No building permitOne story, detached, 150 sq ft or smaller, 15 ft or lower, no plumbing, storage or similar use
Permit reviewAny exemption condition is not met
Still verifyZoning, landmarks, public way, electricity, foundation, fire separation, and placement