TRADE SERVICE · MECHANICAL, PLUMBING & HVAC CLUSTER

FRACTIONAL CFO FOR PLUMBING CONTRACTORS.

QUICK ANSWER

We run the finance function for plumbing subcontractors doing $1M to $12M: job costing aligned to the way you estimate, a 13 week cash flow forecast, monthly WIP, and a CFO in the room every month. Pricing starts at $1,900 per month.

Plumbing spends in two humps with a canyon between them, so the schedule of values has to be phase-weighted rather than flat percent complete. Underground and rough-in load labor and pipe early, the trade demobilizes while walls close, and trim-out returns months later for fixtures and final behind punch and retainage, which means a flat SOV starves the front and strands the back. We reconcile fixture allowances in writing as selections come in, with deadlines that carry schedule consequences and substitution deltas priced as change orders rather than absorbed. Then we get under-slab conditions photographed and documented before backfill, because the picture taken before the concrete truck shows is worth more than the claim filed after it leaves.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-06
WHERE PLUMBING LOSES MONEY

THE THREE THINGS THAT DRAIN THE CASH.

LEAK 01

The Two-Hump Canyon

Underground and rough-in spend the money; trim-out collects it, months later, behind punch and retainage. A flat percent-complete SOV starves the front and strands the back; phase-weighted billing is the trade's oxygen.

LEAK 02

The Allowance Ambush

Fixture allowances reconcile at the end unless the contractor reconciles them in writing as selections land. Late selections, silent substitutions, and unpriced deltas are the finish line's favorite back-charges.

LEAK 03

The Buried Evidence

Under-slab surprises get documented before backfill or they never happened. The photograph taken before the concrete truck arrives is worth more than the claim filed after it leaves. (cfos-job-profitability-system) ---

HOW SPM FIXES IT

WHAT WE CHANGE.

The rough-in cash hole (the trade's shape, named on the site already)
Copper and pipe on the commodity tape
Fixture allowances and the back-charge trap
Underground changes (the first trade in the dirt of the building)
Service vs new construction (the family split, plumbing verse)
PRICING

FLAT MONTHLY FEE. NO SURPRISES.

Priced by trailing 12 month revenue. No hourly billing. No payroll. No add-ons.

Last 12 months revenueMonthly fee
Up to $1M$1,900 to $2,900
$1M to $3.5M$2,600 to $3,900
$3.5M to $6.5M$3,800 to $5,700
$6.5M to $9.5M$5,100 to $7,100
$9.5M to $12.5M$6,100 to $8,500
$12.5M to $15.5M$7,400 to $11,000
$15.5M to $18.5M$9,400 to $13,500
$18.5M+Quoted individually

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions rather than a report.

Your bookkeeper keeps doing the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Nobody in your office is answering coding questions or chasing a reconciliation at month end.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the job costing.

COMMON QUESTIONS

FREQUENTLY ASKED.

Plumbing contractors at $1M to $5M net about 7.5 percent on the SPM 48-trade benchmark dataset, rising to 9.5 percent by $25M to $50M; the CFOS target at $1M to $5M is 11 percent. The flat middle of that curve usually traces to construction-heavy mix; service-mix operators lift it. Every net profit figure here is stated before taxes, the same basis CFMA reports on, so the two are directly comparable.
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.
ControlQore is the job costing and WIP platform we use for all clients. Purpose-built for contractors, more affordable than legacy tools, and AI-infused. We set it up and manage it, so you do not have to learn it.
A bookkeeper records what happened. We tell you what it means and what to do about it. We align job costing to your estimates, track WIP monthly, and hold strategic accountability meetings so problems get fixed and not merely documented.
$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial construction project manager and master electrician. Managed 150+ projects worth more than $2.1B combined, with individual jobs from $50,000 to $300M, including data centers, military bases, hospitals, and high-rises. Now fractional CFO for commercial subcontractors doing $1M to $12M through Sulphur Prairie Management.About Josh  | LinkedIn

DO YOU KNOW YOUR TRUE MARGIN ON PLUMBING WORK?

Bring one job. We will show you the difference between what you bid and what it cost.

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.