Building a 10 x 12 storage shed will give you plenty of storage room for those household items that never seem to have a place of their own. often there is a need to store excess items outside the home, so a sturdy storage shed is ideal. utilizing the materials that are needed will ensure that your shed is well built.. Shed plans 10x12, with gable roof. plans include a free pdf download, step-by-step details, drawings, measurements, shopping list, and cutting list.. A 12-by-12-foot wood shed provides a valuable storage area that will make a tremendous difference in the organization and space in your home's interior or garage. the shed... a list of materials needed to build a 12x12 wood shed | hunker.