Barntoolbox.com and Myoutdoorplans.com have free building plans for carports. A builder can download a plan for a 12-foot-by-24-foot carport at Barntoolbox.com, and Myoutdoorplans.com has step-by-step directions, including illustrations, for building a simple carport.
The Myoutdoorplans.com plan includes needed materials and tools, plus a video tutorial. The website estimates that a free-standing carport with a gambrel roof should take about a day to complete. Before beginning the project, the website suggests that the builder lays out the carport using batter boards and string and buy quality lumber, ensuring the slats are straight and in perfect condition. The builder should buy lumber made for outdoor use such as cedar or redwood. In addition, a do-it-yourself carpenter must have a drill machinery, a miter saw and a concrete mixer in order to complete a project of this size.