Prefab Container Houses vs. Shipping Container Houses: What’s the Difference? While both prefab container houses and shipping container houses offer an eco-friendly, cost-effective, and durable solution to housing, there are significant differences between the two. Prefab container houses offer more design flexibility, a wider range of materials options, and greater customization, while shipping container houses are limited by the size and shape of the container and are made primarily from steel. Ultimately, the choice between the two will come down to individual preferences and needs.