<p>Your estimate changes because the design changes. Every export from Revit is versioned on the BidLight coordination platform, so you see what&#39;s added, removed, or modified between revisions. No waiting for someone to file a report.</p> <p>When the model updates, the numbers update in real time. That&#39;s the point: you&#39;re not locked into a stale takeoff. You get labor, equipment, material, and time costs in minutes, and they stay current as the design evolves.</p> <p>The AI reads geometry and metadata to classify line items at 86% accuracy, pulling live pricing from a database of roughly $30,000, plus Craftsman, 1Build, and RSMeans. So the change isn&#39;t guesswork—it&#39;s a direct reflection of what&#39;s in the model.</p> <p>If you&#39;d rather not chase it yourself, BidLight&#39;s team can run the coordination for you. Either way, you&#39;re not re-doing takeoffs by hand. You&#39;re defending numbers that actually match the project.</p> <p>That&#39;s the honest answer: the estimate changes because reality changes. BidLight lets you keep up without the busywork.</p>