THE BACKLOG THAT KILLS CONSTRUCTION COMPANIES.
Winning new work accelerates a cash crisis when your working capital can't fund the mobilization gap. Every project you sign requires cash before the first pay app arrives — labor, material, equipment, overhead. If you win $2M in new contracts this month but don't have the working capital to fund the first 60–90 days of costs, the backlog that looks like growth is actually a cash drain that outpaces your ability to collect.
The GHC story in the CONTROL book is exactly this: $5M in year-two revenue, growing fast, maxed lines of credit, SBA loan, personal LOC secured against the house — all while winning work. The business was profitable on paper. The backlog was growing. And the owner was 8 days from missing payroll. This page explains how that happens mechanically — and what prevents it.
WHY GROWING BACKLOG CAN MEAN SHRINKING CASH.
Most subcontractors think of backlog as a good thing — and it is, if the working capital is there to fund it. The problem is the lag. Every project in your backlog has a cash requirement before the first check arrives. That requirement is real and it hits on day one of mobilization, not on the day the pay app gets approved.
On a $600,000 civil project, your first 6 weeks of costs might look like this: $80,000 in labor, $120,000 in material, $40,000 in equipment costs, $18,000 in overhead. That's $258,000 funded before your first pay app even hits the GC's desk — and another 30–45 days before you see a check. To mobilize that job, you needed $258,000+ in working capital on day one.
If you're signing three projects like that in the same quarter, the working capital requirement stacks. The backlog grows. The cash shrinks. You look busier than ever and feel broker than ever — because you are.
The counterintuitive reality: Slowing down new work for 60 days to let receivables catch up is sometimes the fastest path to financial stability. A civil contractor we worked with did exactly that — paused new project starts for two months, collected $310K in overdue AR, paid off two LOCs, and then resumed bidding from a cash-positive position. The backlog felt smaller. The business was safer.
WHY BACKLOG BECOMES CASH-NEGATIVE.
Mobilization Cost Exceeds Available Working Capital
You signed the contract. Your crew starts Monday. The material supplier wants a 50% deposit on the pipe. The equipment company wants the first month's rental upfront. Payroll runs week one. Your available LOC is $120,000. The mobilization requirement is $180,000. You draw everything you have and you're already $60,000 short before week two starts. Multiply this across two or three simultaneous project starts and the math breaks fast.
Growing Revenue Creates Growing Overhead Before the Revenue Arrives
To win $8M in work, you hire a project manager at $95,000. You add an estimator. You rent a bigger yard. You buy a truck. Your overhead goes up $250,000 a year before the $8M in revenue materializes as billings. The overhead is monthly and fixed. The revenue is delayed by billing cycles. If those new projects mobilize slowly or take longer than planned to start generating billable milestones, you're funding expanded overhead out of working capital for months before the revenue catches up.
Bidding Optimistically on Price Creates Work That Never Covers Costs
In a competitive market, it's tempting to sharpen the pencil to win work and fill the schedule. A full crew is better than a crew sitting idle — right? Not always. Work that doesn't cover direct costs plus overhead plus a target net margin is cash-negative from day one. If your gross margin on new work is 12% and your overhead rate is 14%, you're losing 2% on every dollar of revenue before a single thing goes wrong in the field. A full backlog of low-margin work accelerates the cash crisis it's supposed to prevent.
HOW TO KNOW IF YOUR BACKLOG IS SAFE TO FUND.
Before signing any new contract, CFOS runs a working capital check: does the available LOC headroom plus expected AR collections in the next 60 days cover the mobilization cash requirement for this project? If yes, sign. If not, either delay the start date, negotiate a mobilization payment, or pass on the work.
FREQUENTLY ASKED.
