The combination of two 40ft containers (each measuring 40ft×8ft×8.5ft) and two 20ft containers (20ft×8ft×8.5ft) creates a flexible footprint that balances square footage with practicality. Typically, the ground floor leverages the 40ft containers for open-concept living spaces—such as kitchens, living rooms, and guest bedrooms—while the 20ft units serve as auxiliary areas like home offices, storage rooms, or bathrooms. The second storey, often constructed by stacking additional containers or extending the frame, adds bedrooms, a master suite, or a rooftop deck, maximizing vertical space without expanding the building’s footprint. This configuration results in a total living area of approximately 1,280 square feet (120 square meters)—spacious enough for a small family while remaining compact enough for urban lots, remote properties, or temporary settlements.