Do you need a permit for a shed 20 by 20 on skids

Yes. You will definitely need a shed permit through the building department due to the size of it. 120 square feet or less is a same-day permit. A 20 by 20 will require submitting engineered plans among other items. 352 - 754 4050 is the phone number. The office closes from 11:30 to 1. But is open 7:30 two for every day except Wednesday it opens at 9

Yes, sheds over 120 sq ft requires a building permit and sheds 120 sq ft or less requires a zoning permit.