Whether you need a covered place to park your vehicle at night or you simply need some extra storage, adding an outbuilding somewhere on your property can be a great idea. Outbuildings can range in size, price and purpose, but they have countless benefits as long as outdoor space permits. Even if you are a DIY enthusiast, building a structure like a shed or a garage is not generally recommended. Instead, hire a professional builder or contractor to tackle the project, and use this guide as a reference for determining average costs associated with these jobs.