ONE PROBLEM, IN DETAIL

PLUMBING: THE ROUGH-IN CASH HOLE

QUICK ANSWER

Plumbing spends in two humps with a canyon between: underground and rough-in load the labor and pipe early, then the trade demobilizes while walls close and finishes run, then trim-out returns months later for fixtures and final. The.

This page covers one problem. The full picture for this trade, including the other places margin leaks, is on the plumbing operating system page.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-06
WHAT BREAKS

WHERE THE MONEY GOES.

The rough-in cash hole (the trade's shape, named on the site already)

Covered in full in the quick answer above. The sourced numbers and what controls it are below.

WHAT THIS TRADE SHOULD EARN

THE NUMBER TO MEASURE IT AGAINST.

Plumbing contractors run about % net profit at $1M to $5M, rising to roughly 11% at $5M to $10M. The CFOS target at $1M to $5M is11%, set at 10 percent before taxes or 3.5 points better than your trade's average at your revenue, whichever is higher. A problem like this one lives in the distance between those two figures rather than in a loss on any single job.

Gross margin over the same bands runs % to 26%, against a CFOS target of 11%.

Full plumbing benchmark bands by revenue

WHAT CONTROLS IT

THE SYSTEM THAT FIXES THIS.

Cash Flow Cycle System

Billing, documentation and collections, which is where the days hide.

How the Cash Flow Cycle System works

COMMON QUESTIONS

FREQUENTLY ASKED.

The canyon between plumbing's two spending humps: underground and rough-in consume labor and pipe early, the trade demobilizes while the building closes up, and trim-out returns months later to collect final payment behind punch and retainage. Phase-weighted schedules of values, with rough-in billed at rough-in weight and trim-out as a separate remobilization, are the fix.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
Sixty days. We migrate your books back to the start of your last taxable year, set up ControlQore, and build your job costing structure from scratch. Fully operational in two months.
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.

IS THIS COSTING YOU MORE THAN YOU THINK?

Bring one plumbing job and your last full year. We will show you what this is worth in dollars before we talk about working together.

You don't hire a CFO because it's safe, you do it because the real risk isn't having one.
Book a 20 minute diagnostic

20 minutes. No sales pressure. We will tell you exactly what's broken before we talk about anything else.

OR START WITH THE WORKBOOKS. NO CALL NEEDED.