Six Trips Back for Pads and Sidewalks, One Unit Price
You were first on the site and you're still coming back for stairs, pads, curbs, and exterior flatwork, all priced inside a per-yard number that assumed you never left.
Being first on and nearly last off is a scheduling position no other trade holds, and it means your small-quantity work is spread across a year of somebody else's sequence. The unit price you bid was built on continuous placement rates, so every return trip is priced as though it were part of the big pour. Nobody bids these as separate mobilizations, so the cost has no home in the estimate and no cost code in the field.
The size of it
The last 5 percent of contract value routinely eats 15 to 20 percent of the job's labor hours at the worst production rates on the job. It happens after you've already reported the job substantially complete and profitable, so the erosion only surfaces in the final job report, and by then it has repeated across the whole portfolio.
Concrete takes six mobilizations, and the last five are all small quantities. Footings, walls, and slab-on-grade run as continuous production with good rates and a full crew. Then the crew returns for a stair flight, a couple of housekeeping pads, a curb run, and the exterior flatwork, each trip carrying a crew, trucking, sometimes a pump, and a load small enough to draw a short-load fee below roughly 4 yards. Winter returns add ACI 306 protection on top, which means blankets, heat, and accelerator that were never in the estimate.
Three moves, in order
Step 01: Job cost structure
Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words.
What else costs concrete contractors money
The same mechanism in other trades
What concrete owners ask
How to bid concrete remobilization for pads and sidewalks?
You were first on the site and you're still coming back for stairs, pads, curbs, and exterior flatwork, all priced inside a per-yard number that assumed you never left.
What does it cost?
The last 5 percent of contract value routinely eats 15 to 20 percent of the job's labor hours at the worst production rates on the job. It happens after you've already reported the job substantially complete and profitable, so the erosion only surfaces in the final job report, and by then it has repeated across the whole portfolio.
What do I do first?
Create a numbered remobilization cost code for each return trip and make the foreman code hours and trucking to the trip number, not to the base pour phase.
What are concrete contractors supposed to be making?
Concrete runs 21% gross margin, 14% overhead and 7% net profit before taxes at $1M–$5M. The all-trade average is 7%, so this trade sits right on it. The CFOS target is 10%.
Which part of the system fixes it?
The step is number 01, job cost structure. Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words. It comes from chapter 1 of CONTROL: The Construction Financial Operating System.
Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.
Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.