Construction Profit Margin: Where It Goes for $20M to $100M Contractors

The first place margin disappears is before the job even starts. The bid log says 22 percent gross. The unit prices look reasonable. Everything looks normal. Then we pull the equipment rates, the indirect costs, and the contingency line. The bid was underpriced before anyone left the office.

Equipment rates that don't cover the equipment. Most contractors price equipment to cover fuel, operator wages, and a token rate. They miss depreciation, maintenance, idle time, and the cost of the capital tied up in the fleet. One earthwork contractor we worked with hadn't adjusted his rates in four years. He was 18 percent underpriced on equipment-heavy jobs.

Indirect costs nobody allocated. Unbilled PM time, supervision across sites, equipment moves, and yard time rarely show up in a unit price. Another earthwork contractor we worked with added $200,000 of indirect cost to the first bid he built with an allocation model. That cost had been eating his margin on every job before it.

Contingency that isn't there. A steel fabricator we worked with had been in business 20 years and never put contingency in a bid. Every overrun came straight out of profit. He thought he was bidding lean. He was bidding short.
Risk doesn't get cheaper because you didn't price it.

Profit fade is the gap between the margin you bid and the margin you landed when the job closed. When it's negative job after job, you don't have a job problem.

You have a system problem.

Costs don't blow up all at once. They creep. A little extra labor here, a material price that moved, a week of weather, a piece of equipment that sat. None of it is alarming alone. It stacks over the life of the job, and the first place it shows up is your WIP schedule.

WIP, or work in progress, is the table that shows every active job, what you've billed, what you've earned, and the gap between them. It's the closest thing construction has to a fuel gauge. If your estimated cost to complete keeps climbing month over month, your profit is shrinking while you work, and the WIP tells you before the P&L does.

The report walks through how that monthly review runs, who sits in the room, and what it catches.

The crew does the work Friday. Good work. The customer is happy. The invoice never gets written, because nobody told the office it happened. Three months later the job closes a few points under estimate and everybody scratches their head.

That's not a one-off. That's how a year loses two points of net.

Even when change orders do get billed, they often get billed wrong. Owners price the base contract at a healthy markup, then price change orders at cost or close to it, because it feels small and nobody wants to nickel-and-dime the customer. So the unplanned work, the work carrying the most risk, runs at a worse margin than the work you bid.

A change order should add profit, not drain it. The authorization rule and markup standard that fix this are in the Field Report.

Volume 2 covers the cash side of change orders and six other places cash gets stuck. Read Where the Cash Hides.

The fourth place margin disappears is the window between award and mobilization, when most contractors stop pushing on price.

The award comes in. The PM pulls the sub quotes from the bid file and honors them. Materials get ordered at bid prices. Work starts. What gets skipped is the buyout: going back to subs and vendors once you have the contract, when they want the work badly enough to sharpen their pencils.

One commercial facility services contractor we worked with had never gone back to the market after award. We set a simple rule: at least two competitive prices per major trade, with the original bidder given the chance to match. Inside one quarter, sub pricing came down 4 to 6 percent across the board. If nobody on your team produces a buyout report at mobilization, those savings are invisible, and nobody is fighting for them.

The fifth blind spot is the one owners find hardest to accept. Some jobs were never going to make money at a margin you can live with, and most contractors have no system for saying no to them.

Sales brings the opportunity. The estimator prices it. The bid goes out. Nobody asks whether it should have been bid at all.

One earthwork contractor we worked with had been bidding everything for two years. Win rate crept up. Margin crept down. He thought he had a margin problem. He had a bid problem. After we installed a no-bid process, he passed on 40 percent of the work he would have chased. Revenue dropped 12 percent. Net margin grew by more than the revenue he gave up.

Revenue is not profit. The contractors who hit top-quartile margin are the ones whose no-bid pile is thicker than their bid pile. Volume 3 goes deeper on this in January 2027.