You won the job, and then the job ate your margin. The estimate looked fine when it went out the door. Nobody checked it hard, because nobody had the time, and the estimator who built it was the same person who signed off on it.
That is the gap. Most construction businesses do not have a real estimate review process. They have a habit, and habits break under pressure. When work is busy and bids are stacking up, the checks that should catch a missed line item or a soft labour number are the first thing to go.
I have spent more than 20 years advising business owners, most of them in construction and the skilled trades. I run The Business Builders by Workplaces out of Edmonton, coaching owners on the two outcomes that keep a contractor alive: moving top-line revenue and protecting margin. A shaky estimate review process quietly wrecks both.
Why a weak estimate review process compounds
An estimating mistake does not stay small. It rides the whole job.
Underprice the labour on a bid, and you do not find out on day one. You find out three weeks in, when the crew is behind and the hours have blown past what you quoted. By then the money is gone and there is nothing to do but eat it.
Here is the part owners miss: the errors are not random. When one person builds and self-verifies every estimate, the same blind spots repeat on every bid. The estimator who forgets to load equipment costs forgets it every time. The one who runs optimistic on labour runs optimistic every time. You are not paying for one mistake. You are paying for the same mistake, over and over, scaled up on your biggest jobs.
The biggest jobs are exactly where self-verification fails hardest. A ten-thousand-dollar quote can absorb a small error. A high-value bid cannot. Yet in most shops, the small job and the large job get the same review, which is to say almost none.
There is a second cost that is harder to see: the bids you lose. When estimators pad every number to cover their own uncertainty, your pricing drifts high and you stop winning work you should win. No review means no calibration, and no calibration means you are either too high or too low, rarely right.
The fix: tiered review scaled to bid size
The answer is not to review every estimate the same way. You do not have time, and you do not need to. The answer is to match the level of review to what is at stake.
Think of it as tiers.
Set review thresholds by dollar value
Draw two or three lines based on bid size.
- Small bids: the estimator self-checks against a standard checklist. Fast, light.
- Mid-size bids: a second estimator or lead does a peer review before it goes out.
- Large or high-risk bids: management review, sign-off required, no exceptions.
The thresholds are yours to set. The point is that a job big enough to hurt you never leaves the building on one person’s word.
Build a short estimate scorecard
A review is only as good as what it checks. Give reviewers a simple scorecard that forces the questions that actually cause overruns:
- Are labour hours built off real production rates, not hope?
- Is every material line current, including recent price moves?
- Are equipment, mobilization, and disposal costs loaded?
- Is overhead and target margin applied, not just cost?
- Are the assumptions and exclusions written down?
When the same questions get asked on every bid, your blind spots stop hiding.
Write it down as an SOP
A process that lives in your head is not a process. Document the thresholds, the scorecard, and who signs off at each tier. Two pages is enough. The value of writing it down is that it survives a busy week and a new hire, which is exactly when informal review collapses.
The honest counter-argument
Owners push back on this, and fairly. “We are slammed. Adding a review step slows down bids we need out the door.”
True, a little. Peer review costs time. Look at what it replaces. It replaces weeks of lost margin on a mispriced job and the rework of chasing money you already spent. A few hours of review across the year is cheap against one bad bid on a large job.
The other honest point: review only works if the person reviewing is competent to catch the error and willing to say so. That is a people question as much as a process one. If your reviewers rubber-stamp to keep the peace, you have a scorecard and no defence. Good review needs someone with the standing to send a bid back, which is why the largest jobs belong with management.
Business coaching for construction and trades owners
If you are looking for a program that coaches construction and home-service owners on operations and leadership, this is the work I do. The Business Building Program and the Leadership and Management Development Series are built for owners who already have revenue and a crew and a margin problem, not for people starting out. We install operating rhythms, review cadences, and the accountability that makes an estimate review process hold.
Your next step
Pull your last five estimates that lost money or lost the bid. Look for the pattern, not the one-off. If the same category keeps showing up, that is your first scorecard line and your first review threshold. Build the tier around it, write it down, and use it on the next bid over your threshold.
Build what compounds. You can reach out through Workplaces when you want a second set of eyes on the process.
