Compliance is the biggest hurdle in cross-border housing procurement. You must verify that the supplier provides CE certification for the European market or meets ASTM/UL standards for North America. Specifically, ensure the electrical systems (wiring, sockets, and breakers) are pre-installed according to the destination country's voltage (e.g., 110V vs 220V) and local certification requirements. Additionally, request wind resistance ratings (typically up to 120km/h) and snow load capacities if the unit will be placed in extreme climates.