Provided rectangular office container is basically prefabricated structure that can be used as suitable working space for commercial or government organization. Quick to assemble, this galvanized steel made structure is insulated with sandwich panel to attain excellent thermal as well as acoustic attributes. PVC and aluminum made doors and windows of this container structure are crack proof and highly durable. Neat and clean look of its interior optimizes productivity of working personnel. This rectangular office container is preferred over any concrete made commercial structure for its foundation free erection method, low installation charge and ease of assembling.