A shed requires a permit if it is over 200 square feet in size. Sheds must be placed at least three feet from your side or back property line and off any easements across your property. Sheds also must be anchored and the maximum height of a shed is 14 feet to the mean distance between eaves and ridge of a gable, hip or gambrel roof. Make sure your new shed plus any existing garage space does not exceed 1,400 square feet.