The size of your shipping container house depends on functional requirements and site constraints. Single 20ft containers (160 sq ft) suit minimalist dwellings or auxiliary spaces, while 40ft units (320 sq ft) accommodate small families. Multi-container configurations create expansive residences exceeding 2,000 sq ft through creative stacking and joining. Vertical arrangements (2-3 stacked containers) optimize small footprints, whereas horizontal spreads suit rural properties. Our design team calculates optimal sizes based on occupancy (allow 100-150 sq ft per person), furniture requirements, and circulation space needs. Larger projects benefit from our modular approach - containers serve as structural modules that can be added over time. We consider local building regulations regarding maximum sizes, setback requirements, and height restrictions during planning. For temporary installations, smaller units facilitate relocation flexibility, while permanent residences often incorporate multiple containers for spacious layouts. Share your intended usage and site details with our planners for personalized size recommendations balancing comfort and practicality.