CASE STUDY · CONCRETE CONTRACTOR

$1.3M LESS REVENUE. MORE PROFIT.

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A $4.9M concrete subcontractor felt that something was wrong, because revenue kept rising and cash never reflected it. Overhead was carried on the books at 5 percent when the real number was closer to 12, so every job had been priced against a cost structure that was wrong. We collected $203,000 in the first week, corrected the rate, and rebuilt job costing.

This is the most common failure we find and the least visible one. Overhead was posted in places that kept it out of the overhead line, so the rate loaded into every bid was less than half the real number. The jobs looked healthy at the gross line and the company made almost nothing, which is what an understated overhead rate produces. Correcting it meant every bid going forward carried the real cost of running the business, and the immediate consequence was declining some work. The following year the company did $1.3M less revenue and made more money.

BY JOSH LUEBKERPublished June 2026Updated August 2026
THE SITUATION

A $4.9M CONCRETE SUB. REVENUE UP, CASH FLAT.

A concrete subcontractor doing $4.9M a year, self performing flatwork and structural concrete for commercial general contractors. Revenue had grown for several years. The owner described the feeling as knowing something was off without being able to point at it, which is the most accurate diagnosis anybody gave us before we started.

THE PROBLEM

GOOD JOBS, NO MONEY.

Each job looked acceptable when it closed. The gross margin was in a range the owner expected and the crews were producing, so there was no obvious failure to investigate. At the end of the year the company had very little to show for $4.9M of work.

Pricing was set from the last similar job plus a feel for the market. Because the overhead rate in the estimate was understated, the bids were competitive for a reason nobody understood, which is that the company was absorbing part of its own cost of doing business on every award.

There was also $203,000 of overdue receivables that had aged without a routine, and the owner had never been able to pay profit sharing despite wanting to for years.

WHAT WAS REALLY WRONG

AN UNDERSTATED OVERHEAD RATE.

Overhead on the books read 5 percent of revenue. Rebuilt from the actual trailing twelve months, the real figure was closer to 12 percent, because costs that belonged in overhead had been coded into job costs and other accounts. Every estimate for years had loaded roughly 7 points less overhead than the business consumed.

The chain ran from a miscoded chart of accounts, into an understated overhead rate, into systematically underpriced bids, into a gross margin that looked normal and a net margin that was near zero. The Job Profitability System was the module that wasn't running, and this is the failure it exists to catch, because a company can't price work correctly against a cost structure it has recorded wrong.

Job Profitability System
THE INTERVENTION

WHAT CHANGED, WEEK BY WEEK.

Week 1: Worked the receivables aging against a defined follow up and collected $203,000 of overdue invoices.
Weeks 2 to 4: Rebuilt the chart of accounts so overhead costs stopped being coded into job costs, and recalculated the real overhead rate from the trailing twelve months.
Month 2: Rebuilt job costing against the estimating structure, so labor production per unit could be read separately from material on every pour.
Months 2 to 3: Loaded the corrected overhead rate into estimating and set a bid floor, which meant declining work that couldn't carry it.
THE OUTCOME

THE NUMBERS, NOT THE FEELING.

$203K
Collected in Week One
5 to 12%
Overhead Rate Corrected
$130K
Profit Sharing Paid, First Time
$1.3M
Less Revenue, More Profit

The following year the company took $1.3M less revenue and made more money than it had at its peak, because the work it declined had been the work that was losing. The owner paid $130,000 in profit sharing for the first time.

Total time from first call to a corrected overhead rate running inside live bids: about 10 weeks. The revenue reduction and the profit increase both showed in the following full year.

WHAT THIS MEANS FOR OTHER CONTRACTORS

DOES THIS SOUND FAMILIAR?

Contractors carrying this failure tend to recognise the same set of things. Revenue has grown and the bank balance hasn't moved with it. Individual jobs look fine at the gross line while the year produces almost no net. Nobody has recalculated the overhead rate in the estimate for at least a year. And the company wins a suspiciously high percentage of what it bids.

That last one is the tell most owners read as a strength. Winning most of your bids usually means you're the cheapest for a reason inside your own numbers.

See how CFOS applies to concrete subcontractors specifically on theConcrete Operating System page, or book a 20 minute call and bring your own numbers.

COMMON QUESTIONS

FREQUENTLY ASKED.

Usually an understated overhead rate. In this case overhead was carried on the books at 5 percent of revenue when the real figure was closer to 12, because costs belonging in overhead had been coded into job costs and other accounts. Every bid for years loaded roughly 7 points less overhead than the business consumed, so jobs looked healthy at the gross line while the company netted almost nothing.
$203,000 collected in the first week, the overhead rate corrected from 5 percent to a real 12 percent, $130,000 of profit sharing paid out for the first time in the company's history, and the following year produced more profit on $1.3M less revenue. The corrected rate was running inside live bids in about 10 weeks.
Yes, and it applies to concrete and flatwork subcontractors roughly between $1M and $12M, particularly any company that wins a high percentage of what it bids. Concrete is where it hits hardest because labor production is the entire margin, so an understated overhead rate plus an unmeasured production rate can erase a bid without a single visible failure on the job.
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial project manager and master electrician: 150+ projects worth $2.1B combined, from $50,000 to $300M. Now fractional CFO to commercial subcontractors.

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