Every large capital project already has two sets of eyes on the drawings before they reach the field. The architect checks the set against design intent. The contractor's coordination review is scoped to pricing the work accurately. Both reviews are real, thorough, and staffed by capable people — and neither one is scoped to protect the party writing the checks.
That gap isn't a failure of process. It's the process working exactly as designed, for a different, legitimate purpose. Once you see it, the pattern shows up on nearly every large, multi-discipline set we've reviewed — commercial, multifamily, industrial, or higher-ed.
The two reviews your project already has
Start with what's actually happening on a typical bid or IFC set. The architect of record runs quality control against their own design intent — checking that what got drawn matches what they meant to draw. Once that's confirmed, their review is complete. It was never scoped to catch a mechanical duct routed through a structural member on someone else's sheet.
The general contractor's coordination team reads the same set differently. Their review is scoped to pricing the work accurately — not to flagging cross-discipline conflicts on the owner's behalf, which is a different task with a different objective. Neither party is doing anything wrong. They're both doing their jobs as their contracts define them.
What an uncaught conflict actually costs
The same clash carries a radically different price tag depending on when it's caught. At the design phase, a conflict costs nothing to fix — it's a redline. By permit, it's a coordination note. By bid, someone has already priced around the ambiguity. In the field, it's a stop-work RFI, a change order, and very likely schedule float that no one budgeted for.
No clash detection software flagged it, because the model itself wasn't in conflict — it was a general note on one sheet contradicting a routing decision on another. That distinction matters more than it sounds like it should.
Why BIM clash detection doesn't close this gap
Clash detection is genuinely useful, and most large projects already run it. But it catches geometry — two coordinated elements physically overlapping inside the model. It doesn't catch a written note that prohibits what another sheet requires, a spec section that contradicts a detail, or an omission where no conflicting geometry exists at all because no one ever drew the connection. Those are the conflicts that live in the issued documents themselves, not in the model.
On one 133-sheet bid set for a large data center build — a set that had already been through a top-5 general contractor's own coordination process — an independent owner-side pass surfaced 26 cross-discipline conflicts, six of them critical, representing roughly $430,000 in confirmed field-cost exposure. None had been caught by anyone else on the project.
What owners can do before the set goes out
The fix isn't more process from the same two parties — it's a third, independent read of the set, run for no one's interest but the owner's. In practice that means:
- Reviewing the issued set, not just the model. Written notes, specs, and details matter as much as coordinated geometry.
- Pricing every finding in dollars. A "potential conflict" doesn't get budget attention. A documented exposure number does.
- Doing it before bid, not after. Every day the set sits uncorrected, the cheapest fix on the table keeps disappearing.
- Adding a review whose incentives are aligned with the owner's from the start. A dedicated, owner-paid read focused specifically on cross-discipline exposure, run alongside the architect's QC and the GC's coordination review — not instead of them.
None of this requires slowing down a project. A focused, independent pass on a bid set typically takes 48 hours and changes nothing about the design or construction schedule — it just puts a number on what's hiding in the documents before the field finds it.
For a fuller breakdown of what makes this kind of review distinct — who pays for it, who it reports to, and how that changes its scope — see what owner-side QA/QC actually means.
Key takeaways
- The architect's QC and the contractor's coordination review are both real — and neither is scoped to protect the owner.
- The same conflict gets exponentially more expensive the later it's caught: free at design, costly in the field.
- BIM clash detection catches geometry, not contradictions between written notes, specs, and details.
- An independent, owner-side review run before bid is the only check with incentives aligned to the owner alone.
Whichever direction a project ultimately goes, the sequencing rarely changes: the cheapest fix for any given conflict always exists before the set issues, never after. Every day a review gets pushed later is a day that fix gets more expensive for whoever's paying for it — and on projects this size, that's rarely a small difference.