Many times when someone buys a new backyard storage shed from me at alan's factory outlet, they ask do i need a building permit for a storage shed, prefab garage or metal carport.sometimes people who consider the possibility of getting a shed do not even think about getting a building permit for a shed.. Build shed without permit wood storage shed design how to build a simple little 14x7 roof build shed without permit free horse barn blueprints roll up utility shed doors lowes i was amazed a person simply could order these shed building kits online, and decided to buy a shed plans that got found online.. However, there are some cities that require a building permit for any shed larger than 120 square feet and even some cities that require a building permit on any shed regardless of size. some of these cities do not charge a fee for shed building permits while others do..