Ask most shops what rework costs them, and you'll get a guess. Checks happen at the end of the line, on paper and in photos on someone's phone. Rework gets fixed and forgotten, and nobody counts how often work comes back.

Building Swell puts the quality check right on the route. Crews fill it out at the station, every photo is stamped with who took it and when, and the stage can't close until the check is done. When something fails, the stage is marked as reworked and a rework form records what went wrong. Then you see first-pass yield and rework by department, week over week, and which jobs keep coming back.