Table of Contents
36
8 min
29.09.2026
Construction Profitability: Count It Per Crew-Day, Not Per Contract
Olena Smolikova
Financial expert at Finmap
Ask a builder which job was the best last year and you will usually hear the biggest one. Ask which was the most profitable and the answer is the same — because profitability is being read as the margin written at the bottom of the estimate.
That number answers only half the question. A contract that leaves 400,000 sounds better than one that leaves 180,000, until you notice the first tied up two crews for five months and the second took three weeks.
Your real capacity is crew-days
A construction company does not sell square metres or contracts. It sells the time of a limited number of crews, and that number is fixed in the short term: you have four teams, they work roughly twenty-two days a month, and that is 88 crew-days to allocate — no more, whatever the pipeline looks like.
Once capacity is counted this way, the right question about any job stops being «what is the margin?» and becomes «what does it leave per crew-day, and could that crew have done better elsewhere?»
The same margin, different businesses
Two jobs. A full apartment renovation: contract 1,850,000, materials and subcontractors 1,190,000, leaves 660,000. It occupies two crews for four months — roughly 176 crew-days. That is 3,750 per crew-day.
A bathroom refit: contract 240,000, materials and subcontractors 156,000, leaves 84,000. One crew, sixteen days. That is 5,250 per crew-day.
The big job leaves nearly eight times more money and is the worse use of the company. Fill the same four months with bathroom refits and the same crews produce meaningfully more — which is exactly the calculation that never appears in an estimate.
Count the days the estimate forgets
The comparison only works if the day count is honest, and estimates are optimistic by habit. Include the days that do not feel like work: waiting for materials, waiting for the client to choose tiles, redoing what the client changed his mind about, the crew standing idle because the electrician has not finished.
Those days are paid — the crew is on the payroll whether or not the site is moving — and they belong to the job. A renovation that «took four months» usually consumed four months of crew capacity, not the two and a half months of actual work in the plan.
Overheads land on days, not on contracts
The office, the estimator, the transport, the tools, the accountant — these are paid per month. Spreading them across contracts by revenue makes big jobs look expensive and small ones cheap. Spreading them across crew-days is closer to the truth: every day a crew works costs the company its share of the office whether the job is large or small.
Divide monthly overheads by monthly crew-days to get the number. If the office costs 220,000 a month and you have 88 crew-days, that is 2,500 per crew-day that every job must cover before it earns anything. In the example above, the bathroom refit clears it comfortably and the big renovation is closer to the line than its margin suggested — the same effect described in overheads that quietly ate 22% of the margin.
What changes in how you sell
Once jobs are compared per crew-day, three decisions get easier. Which enquiries to chase — a steady flow of short, high-density work can beat one prestigious contract. Which jobs to price higher — a long job that blocks a crew for months should cost more per day, not less. And when to say no — a contract that leaves less per crew-day than your overhead is a job that pays you to be busy.
It also changes the conversation about delays. A two-week wait for the client's decision is not a scheduling annoyance; it is two weeks of crew capacity at 2,500 of overhead a day, and it is reasonable to price or bill for it.
Where to start
Take the last five finished jobs. For each write down what it left after materials and subcontractors, and how many crew-days it really consumed, including the idle ones. Divide. Then work out your overhead per crew-day and see which of the five actually paid for the office.
In Finmap you see income and costs by project alongside the calendar, so a job that is quietly consuming capacity is visible before it finishes — see also margin by project. Try it free for 7 days.
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FAQ
What is profit per crew-day?
What a job leaves after materials and subcontractors, divided by the number of days it occupied a crew. It compares jobs by the resource that is actually scarce — crew time — rather than by contract size.
Should idle days be counted against the job?
Yes. Waiting for materials or for a client decision is paid time: the crew is on the payroll and cannot be sent elsewhere, so those days belong to the job that caused them.
How do I spread office overheads across jobs?
By crew-days rather than by revenue. Divide monthly overheads by the crew-days available that month; every job must cover that amount per day before it earns anything.
Does this mean small jobs are always better?
No — it means density matters as much as size. A long job is fine if it leaves enough per crew-day; the point is that a large contract should be priced for the months of capacity it blocks.
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