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The Real Cost of Project Overruns in PM Conversations

By Glazix | June 6, 2025

Because You Might Be Holding Scope—But You’re Still Part of the Blame

Project overruns are where reputations go to die. And while no single vendor causes a timeline blowout, PMs have a mental list of which partners added friction, failed to speak up, or made the clean-up harder.

You don’t have to be the root cause to be remembered as part of the problem.

How Vendors Contribute to Overruns (Silently)

Delay flags not raised until the impact is irreversible.

COs submitted without explaining time risk.

Field support ghosted during install issues.

Even if your scope was “complete,” your role in how that scope landed is what PMs remember.

What PMs Say in Post-Mortems

“They were always late with info—never early.”

“We burned 2–3 extra days coordinating their delivery hiccups.”

“They didn’t cause the overrun, but they didn’t help either.”

Why It Matters

PMs must defend vendors to GCs and internal execs.

If your name keeps popping up in recovery meetings, you won’t be on the next bid.

Overruns tie directly to margin loss—and vendors seen as unreliable get cut first.

How to Stay Off the Blame Board

Provide weekly status updates—even if “no change.”

Flag every scope-impacting variable: lead time, sequencing, install support.

Be visible in install phases, not just material delivery.

Conclusion

The best vendors don’t just meet their scope—they protect the schedule. If you want to stay off the PM’s post-mortem list, your job isn’t done until theirs is.


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