When a solar project moves from peak construction into a smaller commissioning tail, the lowest accommodation cost is not determined by headcount alone. The practical choice is between keeping the full camp operating, isolating a complete core zone, or moving the retained team to verified external rooms with transport. The right answer changes with the number of retained residents, the expected number of weeks, the services that must remain available, and the one-time cost of switching arrangements. KUBO can configure phased accommodation, project-control, dining/welfare, sanitation, storage and support modules so a retained group can be planned before peak construction ends, while site-side utilities and operating services are defined for the project.