Four mobilizations, one mob line item
You clear and grub in month one, come back for wet utilities, come back again for paving subgrade at closeout, and the contract still carries one mobilization line.
Civil is the one scope that has to fully leave a site it will be back on four more times, because the pad, the wet utilities, and the paving subgrade happen months apart with other trades in between. Everybody else stages material and keeps a crew close. You're freighting a dozer, an excavator, and a roller down the highway each time, and the return trip has to be pulled out of whatever job that iron is sitting on now.
The size of it
Four unplanned remobilizations at $4k to $8k each in lowboy moves, setup, and lost production come to $16k to $32k of cost against one mob line item. Then add the schedule damage to whichever job you stripped the crew from.
Bid mobilization by the trip and list the trips in the scope letter. Civil's scope isn't continuous, so you leave the site and return three to five times while other people build, and every return means lowboys, oversize move permits, an operator's day of setup, and a crew pulled off a job that was making money. A trade sub who pauses between phases simply stops paying labor. When you demob, the equipment freight is cash out the door whether or not anyone is billing. Price each return separately, list them by phase in the contract, and cost code them separately so you can show what the fourth trip cost when the GC asks for a fifth.
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 civil contractors money
The same mechanism in other trades
What civil owners ask
How should i bid mobilization when i have to come back to the site four times?
You clear and grub in month one, come back for wet utilities, come back again for paving subgrade at closeout, and the contract still carries one mobilization line.
What does it cost?
Four unplanned remobilizations at $4k to $8k each in lowboy moves, setup, and lost production come to $16k to $32k of cost against one mob line item. Then add the schedule damage to whichever job you stripped the crew from.
What do I do first?
Write every phase you'll mobilize for into the scope letter: mass grade, wet utilities, pad fine grade, paving and curb subgrade, and final grade and topsoil. Price a mobilization for each one.
What are civil contractors supposed to be making?
Civil 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.