Certainly! If you choose to secure your structure with ballast some room within the containers will be taken up, but apart from that your containers will continue to work as containers, and can offer handy storage space for tools, products and site materials.
You can also use the containers as a workshop, garage, service bay or lockable dangerous goods storage area. Choosing to fix your containers in place with concrete footings rather than ballast will maximise the available space inside.
