You may find information on Accessory Structures by clicking on the following link: https://ecode360.com/37342298#37342298
Accessory Structures are not attached to the primary residence and larger than 10' x 12' (120 sq. ft.), some examples include pergolas, pavilions, detached garages.
A detached structure up to 10' x 12' (120 sq. ft.) is considered a shed.