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REVENUE GROWTHCASH FLOWOVERHEAD RATESUBCONTRACTOR FINANCECFOSWORKING CAPITALREVENUE GROWTHCASH FLOWOVERHEAD RATESUBCONTRACTOR FINANCECFOSWORKING CAPITAL
THE CONSTRUCTION CFOSCHEDULE A FREE CALL
SYMPTOM — THE CONSTRUCTION CFO

MORE WORK.
BUSIER THAN EVER.
SO WHERE IS THE MONEY?

QUICK ANSWER

Revenue growth in construction requires more mobilization capital before it produces more cash. Going from $3M to $5M means funding 67% more work in progress before collecting 67% more revenue. If the cash conversion cycle stays at 75 days and working capital doesn't grow proportionally, more revenue creates more cash stress — not less. This is not a failure. It's math.

The $5M year feels tighter than the $3M year because it is. You're carrying more projects, more crew, more equipment, more material — all financed for 60–90 days before a draw arrives. The margin is there. The cash isn't — yet. The businesses that scale through this successfully have working capital planning, front-loaded billing, and a 13-week forecast that shows the growth gap coming before it arrives.

BY JOSH LUEBKERPublished: May 2026Updated: May 2026
THE MECHANISM

WHY MORE WORK
CREATES MORE CASH STRESS.

Every new project start requires mobilization capital before the first billing cycle. On a $500K project with a 45-day first draw, you're funding $80K–$120K of labor and material before any cash comes in. Add three simultaneous project starts in the same month and the mobilization demand is $250K–$360K — all before a single pay application is approved.

67%
More Working Capital Needed to Go $3M→$5M
45 Days
Average Wait for First Draw on a New Project
$360K
Potential Mobilization Demand From 3 Simultaneous Starts

The trap: Growth feels like success until the cash position deteriorates. Then it feels like failure. Neither is accurate — growth consumes working capital predictably. The problem is most subcontractors don't model it in advance.

THREE CAUSES

WHICH ONE IS
DRIVING YOUR SITUATION.

01

Growth Outpaced Working Capital

Took on more work than the cash position could support. Every new project start is a cash outflow before it's a cash inflow. Without adequate working capital or a credit facility, growth creates cash stress that looks like a failing business.

02

Overhead Grew With Revenue But Margin Didn't

Added staff, equipment, and overhead to handle the growth — but project margin didn't increase proportionally. Revenue is up. Overhead is up at the same rate. Net profit is flat or shrinking.

03

The New Work Is Lower Margin

Winning bigger projects, chasing volume, accepting work below the minimum margin threshold to fill capacity. Revenue grows. Margin per dollar of revenue shrinks. More work, less money per dollar of work.

THE FIX

HOW TO GROW
WITHOUT LOSING CASH.

Model working capital requirements before taking new work — know how much cash you need before you commit
Front-load every new project SOV — bill mobilization, submittals, and early phases aggressively from day one
Set a minimum margin threshold for new work — below threshold requires explicit approval
Build or expand a line of credit before you need it — banks lend to growing businesses, not crisis businesses
Update the 24-month cash flow forecast when new work is awarded — model the cash demand before the project starts

A $7.1M civil contractor grew from $500K year one to $5M year two — and was three weeks from losing his house. The growth was real. The cash management wasn't there yet. SPM restructured the billing and collections process, built the forecast, and cleared two maxed LOCs and an SBA loan in 90 days. See the case study →

FAQ
COMMON QUESTIONS.

Because revenue growth requires proportionally more working capital to fund. Every new project start requires mobilization capital — labor, materials, equipment — before any billing. A $5M contractor needs roughly 67% more working capital than a $3M contractor to fund work in progress. If working capital doesn't grow with revenue, more projects create more cash stress.

Three practices: model working capital requirements before accepting new work so you know the cash demand in advance; front-load SOV structure on every new project to collect cash earlier; and maintain or expand a line of credit before you need it. Growing businesses get better credit terms than businesses in crisis — arrange the credit during the growth, not after the crisis.

A rule of thumb: working capital should be at least 10–15% of annual revenue. A $5M subcontractor should have $500K–$750K in available working capital — cash plus undrawn line of credit. The CFOS target is $650K in the bank at all times plus a $1.2M credit facility available for growth. This buffer handles mobilization demand on multiple simultaneous project starts without cash stress.

Yes — and it's common. Taking on more work than the cash position can support is one of the most common causes of subcontractor financial distress. The work is real, the margin is real, but the cash to fund the mobilization doesn't exist until the draws come in. The fix is not to stop growing — it's to model the cash demand of growth and arrange the working capital to support it before committing to the work.

Josh Luebker
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction PM and master electrician. Managed 150+ projects totaling $300M+. Fractional CFO for commercial subcontractors $1M–$12M. Author of CONTROL: The Construction Financial Operating System. About Josh →

RELATED RESOURCES
CASE STUDY
$7.1M Civil — Grew Fast, Fixed Faster
$5M year two, maxed LOCs, almost lost the house — fixed in 90 days
AUTHORITY
Why Profitable Contractors Fail
The exact mechanism — revenue up, cash down, why it happens
CFOS
Cash Flow Cycle System
13-week and 24-month cash forecasting — model growth before it hits

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A CASH PROBLEM?

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Josh Luebker, The Construction CFO
JOSH LUEBKER
FOUNDER & CFO

Master electrician and former project manager, 150+ projects and $2.1B+ in commercial work. Now runs the numbers for subcontractors instead of standing on the job site.

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VP OF OPERATIONS

Keeps the system running day to day: job costing, WIP, monthly financial reviews, and the follow-through between calls. Josh handles onboarding.

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