16' x 20' cottage shed with porch, project plans -design #61620 plans design an affordable high quality set of plans how to build storage shed with a limited amount of time, tools and money for any level skill of builders. plans are original professional design generated directly from auto-cad include complete material list, detail layout diagrams and easy follow step-by-step instructions so that anyone can understand what needs to be done. build our shed not only save you money; they enhance the value of your property as well, while solving many storage challenges.