<p>A door becomes a headache when a spec change slips past coordination and the rework, delays and pulled labour pile up around it.</p> <p>A client swaps the door for one with different hardware, a fire rating or a new frame. By the time anyone catches it, framing, electrical rough-in and finish schedules have moved on. The door is not the expensive part. The cost is everything that has to be redone around it, and a clash found in the field runs $5,000 to $50,000.</p> <p>The change was cheap in the model and costly in the field. BidLight keeps it cheap:</p> <ul><li>Publish the revised model from Revit. It becomes a versioned snapshot.</li><li>Compare it with the last revision and the changed elements show up, grouped by interior and MEP.</li><li>Pin an issue to the door and the elements behind it. It carries the sheet and revision.</li><li>Assign an owner and let the 6am digest chase them.</li></ul> <p>Caught in the model, it costs about $50.</p>