<p>BidLight shows you what a late design change touches in the model you already have, so you have a clear answer in minutes instead of redoing half the review by hand.</p> <p>That 5 PM email asks for a change, and you do not know what it does to the other trades. Here is what changes with BidLight:</p> <ul><li>You do not rebuild anything. Publish the revised model from Revit or Navisworks and it becomes a versioned snapshot.</li><li>Compare it to the last revision. The differences list element by element, grouped by structural, MEP, envelope and interior.</li><li>Pin an issue to each affected element and assign an owner. Each issue carries the sheet and revision it came from.</li><li>Owners see their items in the 6am digest.</li></ul> <p>You get the answer in about 15 minutes instead of a 90-minute meeting. A late change caught in the model costs far less than one found on site, where a clash runs $5,000 to $50,000.</p>