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Project Overruns: What Project Managers Whisper Behind Closed Doors

By Glazix | June 6, 2025

Because You May Not Be the Cause—But You’re Still in the Conversation

Project overruns don’t usually start with a single big mistake. They start with small breakdowns, often in vendor execution—missed deliveries, unclear sequencing, unresolved COs. And while you may not have “caused” the overrun, your name still ends up in the PM’s backchannel notes.

Where Vendors Add Untracked Cost

Delivery dates move—but the install crew is already booked.

Punch list closes two weeks late, delaying GC turnover.

Material substitutions require on-site adjustments.

What PMs Say Privately

“They just weren’t responsive once we hit closeout.”

“We had to push them for every update after they got paid.”

“Their delay added two days we couldn’t afford.”

Why This Becomes a Trust Issue

The PM has to explain the slippage to ownership.

The GC logs your firm as “needs tight supervision.”

You go from preferred to provisional—without a word.

How to Stay Out of the Post-Mortem

Send weekly impact summaries—even when on track.

Flag material, crew, or doc risks 48 hours before they hit.

Attend the project closeout—don’t just email the warranty PDF.

Conclusion

Overruns happen. But if you’re not managing your contribution to risk—PMs will assume you caused more of it than you did. And they won’t invite you back to defend yourself.


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