homesmarthome.org thehomestop.org repair-home.org Construct the 4-by-4 feet area to become the patio with buy-ins and chain. Dig 4 post openings 24 in . deep for that corners from the porch. Two of those will be next to the cellular home, although not attached into it. All posts is going to be inside the actual 2-by-8 ground joists.