Make sure that you understand all the legal requirements before looking for a how to build a shed step by step guide. Basically, it depends on where you live. Most constructions ask for an application, as well as a building permit before you begin the build. Get in touch with the building department in the area for specific details. Follow the instructions in small details or you risk being fined. Normally, it depends on whether or not you need a foundation for the shed. Therefore, its size plays a very important role in the process, so be careful about your selections.