You can order this tiny prefab cabin for under $22K and place it anywhere you desire. Mono is the culmination of years of engineering and design, with every detail meticulously planned, and every material tirelessly sourced. The little retreat measures nine feet wide, 12 feet high, and 16 feet across, including a four-foot covered deck. These measurements are intentional, as they require no permits in most of North America. The compact structure uses a single-engineered truss frame that makes it capable of withstanding harsh weather, from heavy snow, to downpours, to heat.