Building your own run in shed typically costs about half of what it costs to purchase a run in shed depending on your region. small horse barn and run in shed roof styles single slope roof: our single slope roof is based on a lean to shed design.. "my shed plans - run in shed plans - now you can build any shed in a weekend even if you've zero woodworking experience!" "if you need more storage space for your backyard, building a shed is the only solution. however, building a garden shed is complex task, as there are so many plans to choose from.". This step by step woodworking project is about building a roof for a 12