UPSIGHT Reconstruct turns an ordinary phone-video walk-through into a measurable 3D model of a construction site - no LiDAR, no survey crew, no special hardware. A site engineer simply walks the site recording with a smartphone; UPSIGHT filters the frames, reconstructs the jobsite in 3D within 2–4 hours, and aligns it to the drawings and the schedule. Teams can then measure distances and dimensions, compare planned versus actual progress, and locate issues in spatial context instead of flat photos. In internal validation, UPSIGHT achieved a 0.945% distance error over 100 meters from ordinary mobile video - at roughly USD 2 of graphics compute per reconstruction, not the USD 50,000–60,000 of a LiDAR rig. By making professional-grade 3D capture as easy as recording a video, UPSIGHT lets any contractor - even a single field engineer - verify site conditions and dimensions, turning a routine phone walk into trustworthy, measurable spatial intelligence.