8x40 Shipping Container Home Design Ive designed and drawn-up my first 8 x 40 steel shipping container home plans. Its a 320 sq. ft. tiny home design. While it is specifically designed for a shipping container, there is no reason it couldnt be a stick-built tiny home plan as well. In fact, if you did that you could put on a gable, gambrel, or shed roof to get some extra storage or sleeping loft space too.