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Margin One
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Plumbing contractors

The plumbing numbers that actually move profit.

Service, drain, repair, install, new construction — dispatch density and callback cost decide whether a busy week was a profitable one. Margin One makes the difference visible by job, crew, and channel.

Book a CallHow It Works

Margin One is a fractional-COO service paired with an operating system (M1COS) built for plumbing contractors. It unifies your field-service, accounting, and marketing data to show true margin by job type, dispatch density, and channel — so you can tell whether a busy week was actually profitable, cut windshield time, and run the shop on a weekly scorecard.

The blind spots

The questions Plumbing owners can’t answer.

Is service-and-drain margin subsidizing low-margin installs — or the other way around?
How tight is our dispatch density, and what is windshield time costing us?
Which jobs generate callbacks, and what's the true rework cost?
Are we converting service calls into memberships and bigger work?

See it in M1COS

Your Plumbing business, on one screen.

A look at Cohen Plumbing’s week — the margin, the leaks, the scorecard, and what marketing actually booked. This is the report you’ll run every week.

Cohen Plumbing · Margin dashboard
M1COS

Net margin

16.9%

▲ 1.4 pts

Avg ticket

$438

▲ $21

Close rate

47%

▲ 2 pts

New members

+61

this month

Gross margin by job type

34%
29%
26%
17%
7%
21%
margin line
ServiceDrainRepairInstallWarrantyReroute

This week's scorecard

MetricTargetActualStatus
Booked-call rate82%85%On track
First-time fix rate90%86%Watch
Membership conversion14%11%Watch
Callback rate<4%5.1%Off track
AR over 60 days<8%7%On track

Marketing — cost per booked job

ChannelSpendBookedCost / job
On track: Local Services Ads$3,80041$93
Watch: Paid search$5,20024$217
On track: SEO / organic$2,10027$78
Off track: Direct mail$2,9008$363

Illustrative M1COS reporting — your numbers, your crews, your channels.

Margin levers

Where Plumbing margin is won.

Service-vs-install margin

Know which side of the business actually carries the profit — and price accordingly.

Dispatch density

Tighten routing and cut windshield time so more of the day is billable.

Callback cost

Surface the rework that quietly eats margin, by crew and job type.

Membership conversion

Turn one-time service calls into recurring revenue and repeat work.

Common questions

Plumbing owners ask us this.

Why is my plumbing company busy but not profitable?
High volume hides low-margin work. Callbacks, loose dispatch density (windshield time), and installs priced below their loaded cost can quietly consume the profit that service and drain work earns. Seeing margin by job type and crew — not a blended average — is what separates a busy week from a profitable one.
What's a healthy net profit margin for a plumbing business?
Most plumbing shops run roughly 5–10% net; disciplined operators reach 12–18%. The lever is usually job-mix and dispatch efficiency more than headline pricing, which is why a weekly operating scorecard tends to move the number faster than a rate increase alone.
How does a fractional COO help a plumbing contractor?
A fractional COO installs the operating rhythm a growing shop lacks — a weekly meeting, a KPI scoreboard, and accountability on dispatch, close rate, and margin. Margin One pairs that with the M1COS platform so the operator's decisions are backed by live numbers, not a monthly bookkeeping lag.

Keep reading

Fractional COO vs. CFO for contractorsWhat belongs on a contractor KPI scorecard

Realize Your Margin.

See your own Plumbing numbers in M1COS. One conversation to start.

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