Most GC jobs do not lose their profit in the estimate.
They lose it in the changes.
The job starts clean. The bid was tight but honest. The schedule makes sense. Then week three, the owner changes the finish. Week five, a hidden condition shows up behind a wall. Week seven, the design team revises a detail nobody priced. Each change looks small on its own. Nobody wants to be the contractor who stops the job over paperwork.
So your crew does the work. The paperwork will catch up later.
Later is where the profit went.
By the end of the job you have done 8, 10, sometimes 15 percent more work than you were paid for — and the margin you bid is gone. Not because you built it badly. Because you gave the changes away one verbal yes at a time.
Why change orders bleed profit
Change order work is the most expensive work on the job, and most GCs price it like it is the cheapest.
It is unplanned work. Your crew stops what was sequenced, remobilizes, works around what is already built, and loses rhythm. An hour of change work costs more than an hour of base work. Almost nobody prices it that way.
It is priced under pressure. The superintendent is standing in front of you. The owner wants an answer today. The schedule is slipping while you decide. Under that pressure, owners price the direct cost — the labor and material they can see — and forget supervision, delay, re-inspection, and the work it pushes into overtime three weeks later.
It starts before it is approved. This is the big one. Once the work is in place, your leverage is gone. An owner who would have signed a fair change order in advance will argue about the same work for months after it is done — because now it is a negotiation, not a decision.
Nobody is counting the total. One change is $2,400. Another is $1,800. Nobody adds them up, so nobody notices the job has quietly grown by $40,000 of extra work — until the final job-cost report explains why a good job made no money.
If that pattern sounds familiar, it is exactly what I dig into first in a 90-Day Business X-Ray: not whether the work was good, but where the money leaked between the bid and the final bill.
The three leaks to plug first
You do not need new software to fix this. You need three habits, enforced every time, even when it is uncomfortable.
Leak 1: Verbal approvals. “Go ahead, we’ll sort it out” is not an approval. It is a dispute scheduled for later. If it is not in writing — a signed change order, or at minimum a written confirmation from someone authorized to approve it — it does not start. No exceptions for good clients. Good clients sign. It is the ones who will not sign that you need the signature from.
Leak 2: Pricing only what you can see. Price every change for the work plus the disruption: supervision time, schedule impact, re-sequencing, small tools, cleanup, and the effect on the work that follows it. If a change pushes other work, say so in writing when you price it — not after the delay has already happened. A change order that does not name its schedule impact has silently donated it.
Leak 3: No running log. Keep one simple log per job: date identified, description, price submitted, status, date approved, date billed. Review it every week. The log does two things. It stops approved work from going unbilled for 60 days — which happens constantly — and it makes the cumulative total visible while there is still time to do something about it.
The system: five rules that protect the margin
This is the system I recommend to every GC owner I work with. It is deliberately boring. Boring is what holds under pressure.
Rule 1: Nothing moves without a signature. Work on a change does not start until the change is approved in writing. Put this in your subcontractor flow-downs too — your subs follow the same rule with you that you follow with the owner.
Rule 2: 48-hour pricing turnaround. Speed is your side of the bargain. If you want signatures before work starts, you cannot take two weeks to price a change. Commit to pricing most changes within 48 hours. Owners respect the rule a lot more when it does not feel like a delay tactic.
Rule 3: Price the disruption, not just the work. Build a standard change-order rate sheet — labor burden, supervision, markup — before the job starts, and price from it every time. Pricing from a sheet is faster and more consistent than pricing from memory at 6 p.m. on a job site.
Rule 4: Review the log weekly. Ten minutes in your weekly job-cost review: What is pending? What is approved but unbilled? What is the total change volume on this job so far? That last number changes behavior all by itself. This weekly rhythm is the same discipline behind my 6-Step Roadmap work — small reviews, done on schedule, instead of one painful autopsy at the end.
Rule 5: Bill it when it is done. An approved, completed change gets billed in the next pay application. Not at the end of the job. Not bundled into a final settlement where it becomes a chip in someone else’s negotiation.
What to say when the owner pushes back
The fear underneath every verbal yes is the same: if I insist on paperwork, I will look difficult and lose the next job.
In practice, the opposite happens. Owners and architects trust contractors whose changes are priced fast, documented cleanly, and free of surprises at the end. The contractor they remember as difficult is the one who shows up at closeout with a stack of unsigned extras.
Try this line, calmly, the next time you hear “just go ahead”:
“I am happy to do it, and we can start as soon as I have your sign-off. I will have the price to you by tomorrow so we do not lose time. What I cannot do is start it on a verbal — that is how both of us end up arguing at the end of the job, and I do not want that for either of us.”
That is not red tape. That is a professional protecting both sides of the deal.
The bottom line
You did not get into this business to donate change work.
Your bid margin is not lost in one big mistake. It leaks out in small, well-intentioned yeses — work started early, priced light, tracked nowhere, billed late. Plug those leaks with a signature rule, fast pricing, honest disruption costs, and a weekly log review, and the jobs you already win will start keeping the profit you already earned.
If your jobs look busy but the profit keeps fading between bid day and closeout, book a free 15-minute strategy call and we will find the leak: https://calendly.com/warren-warrenzysman/intro-call
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