One challenge of using two 40-foot-long containers and one 20-foot-long unit in the main house was the different heights of the two container lengths. Rather than keeping the floor level the same, Robertson chose to lift the kitchen container up a few feet to match the ceiling height of the other two modules and add a step between the kitchen and dining room. "Every home has its challenges," he says. "It’s always like solving a Rubik’s Cube."