<p>An estimate survives value engineering when every number behind it can be traced back to the model — not a spreadsheet someone typed in a hurry.</p> <p>Here&#39;s what makes it hold up:</p> <ul><li><strong>It&#39;s tied to geometry, not guesswork.</strong> BidLight reads your Revit model directly, so quantities come from what&#39;s actually drawn, not a manual takeoff someone eyeballed.</li></ul> <ul><li><strong>The classification is defensible.</strong> Two AI models read geometry and metadata to sort BOQ line items at roughly 86% accuracy — close enough that a reviewer spends time confirming, not rebuilding.</li></ul> <ul><li><strong>Pricing comes from real sources.</strong> Costs are pulled from a database of about $30,000 line items plus Craftsman, 1Build, and RSMeans — not a gut-feel markup you have to defend on the spot.</li></ul> <ul><li><strong>It updates when the design does.</strong> When someone in the meeting asks &quot;what if we swap this assembly,&quot; the number moves with the model in real time instead of forcing a redo overnight.</li></ul> <ul><li><strong>It separates labor, equipment, material, and time.</strong> When the room wants to cut cost, you can point to exactly which category is driving it instead of trimming the whole number blind.</li></ul> <p>That combination is the point: when someone pushes back in the room, you&#39;re not defending a guess — you&#39;re showing them where the number came from.</p>