Tighten change-order discipline
When it may fit: Work is being done before change orders are approved.
Evidence needed: Change-order log with status and timing.
Trade-off: Slows the field if over-formalized; clients may resist.
Construction Intelligence Brief
Why a Profitable-Looking Construction Project Can Become Unprofitable
A job can look profitable on the schedule of values and finish thin. The gap between margin at bid and margin at completion is where construction companies lose money.
1. The business problem
How does a project that looked profitable at bid end up losing margin?
Construction margins are set at bid and tested by every change thereafter: change orders, productivity, material prices, subcontractor performance. By the time a project is half built, much of its final margin has already been decided, and the accounting may not show it.
This matters because a full pipeline can disguise margin erosion. Revenue recognized keeps growing while the margin each project will finish with quietly shrinks.
2. What the evidence can reveal
Tracking project margin honestly takes more than reading revenue and cost to date:
- Calculated Revenue recognized, job cost and gross profit by period.
- Calculated Estimated final margin versus margin at bid, project by project.
- Calculated Productivity: revenue and cost per labor hour.
- Information gap Change orders: approved versus pending, and how much unapproved work has been done.
- Information gap Cost to complete, billing and cash collected, which matter as much as profit on paper.
Estimated final margin is a forecast, not an accounting result, so its reliability depends on how well cost to complete is estimated.
3. Investigate the problem
In the synthetic contractor, revenue recognized grew 12.0% but job costs grew 15.4%, so gross margin moved from 8.5% to 5.6%. Illustrative Cost per labor hour rose 7.7% while revenue per labor hour rose 4.5%.
Calculated The erosion is concentrated. Estimated final margin on Harbor Logistics Warehouse fell from 12.0% at bid to 5.0% now, and on Maple Street Apartments from 9.0% to 2.5%. Other projects held up, and one improved. Labor and subcontractor costs each grew about 17%, faster than revenue.
Hypothesis Unapproved change orders, lower labor productivity, or subcontractor cost growth could each drive that pattern. The data cannot say which, and the answer determines whether the fix is in field management, contracting or estimating. The scenario shows the size of the lever: recovering 1% more revenue (for example through change orders) is worth about +$515K, far more than a 1% change in any single cost.
4. Explore the interactive experience
Investigate it yourself.
Project Performance Dashboard: a project portfolio dashboard with estimated final margins, a scenario simulator for change orders and costs, evidence-linked answers from APIS, and a sample brief, all on synthetic data.
The experience below is built on a synthetic contractor, “Demo Builders Inc.” Nothing in it is real, so you can explore freely.
- In the project table, sort by Est. final margin. Which projects have lost the most since bid?
- In the Scenario tab, add 2% to price / change orders recovered and compare it with a 2% fall in labor cost.
- Ask APIS why a profitable-looking project can become unprofitable.
5. Evaluate possible solutions
What helps depends on whether the erosion comes from unrecovered scope, productivity, or cost growth.
6. What leadership should do next
Questions to answer
- Which projects have eroded most since bid?
- How much work is unapproved?
- Are hours above estimate?
- What is the cash position on each project?
Data to gather
- Change-order log
- Hours and cost versus estimate by phase
- Cost-to-complete forecasts
- Billing and cash collected
Steps to take
- Rank projects by margin erosion.
- Trace the largest to cause.
- Test recovery and productivity scenarios.
- Feed lessons back into estimating.
7. Engage Two Pillars
Improve Project Visibility and Financial Control
Two Pillars can help contractors investigate project portfolio, margin, estimating, cash-flow and operational performance using your own project data. A good first step is a project margin review that traces each project’s estimated final margin back to its causes.
Sources and data notes
- The organization, its figures, and every number in this article and its interactive experience are synthetic and illustrative. They are not real data, a benchmark, or a forecast.
- Reviewed October 2026. This article describes an approach to investigation. It does not replace review by qualified professionals.