A plumber shows up, tightens one fitting, and leaves you with a bill that looks nothing like the twenty minutes he spent there. The obvious answer is that he's charging what he likes because you had no choice. The real answer is in the hours nobody bills for — the driving, the quotes that go nowhere, the appointments that cancel — and in the decade of training standing behind the van. We follow the Milwaukee plumber who spent twenty years telling his own industry what an hour actually costs, and the pricing system he built so you'd never see it.
Sources: Chemed Corporation 10-K filings, U.S. Bureau of Labor Statistics, Plumbing & Mechanical magazine.
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Financial Minds explains why things cost what they cost — the business model behind it, the design decision behind that, and the person who figured it out first.
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Video Summary
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This video explains why plumbing bills often seem disproportionately high compared to the simple parts used. It argues that the cost isn't just about the repair itself, but the massive overhead of running a service business, including unbillable hours, training, and marketing, all of which are hidden within a \"flat rate\" price.
Why does a plumber charge so much for a job that's one rubber washer and a wrench?
He isn't the one keeping it.
Most of that money was already spent before he pulled into your driveway.
In the autumn of 1997, at the closing banquet of a contractor's convention in New Orleans,
a plumber from Milwaukee stood up to collect a plaque for finishing two years on a board.
The room stood up, nearly all of it.
People left their tables and packed in around the stage, and the applause kept going long
past the point where applause normally stops.
He hadn't invented a tool or a fitting.
He'd spent years telling that industry one number, and for most of those years, a lot
of them had hated him for it.
The obvious explanation for your bill is that you had no choice.
Water was coming through the ceiling.
He knew it, you knew it, and the price reflected which of you was more desperate.
It's a satisfying theory.
It just doesn't survive contact with the industry's own accounts.
Start with the biggest name in American residential plumbing.
Roto-Rooter is owned by a public company, which means it has to show its homework four
times a year.
Through 2023 and 2024, people running it kept having to tell investors the same uncomfortable
thing.
The phone was ringing less.
Households were nervous about money, so a slew drain stayed a slow drain.
That is not what a captive market looks like.
Captive markets don't go quiet when times get hard.
Some of your bill is profit.
In 2024, after tax, Roto-Rooter kept a bit under 18 cents out of every dollar it billed.
On a $100 job, call it $18.
Nobody should pretend otherwise.
The greedy plumber theory isn't wrong, exactly.
It's just small.
18 cents doesn't get you from a rubber washer to a bill that feels like it came out of a
specialist office.
It's the rest of it that does the heavy lifting.
And this is where it gets strange, because you'd assume the biggest slice of that rest
is the man himself, his time, his skill, the stretch he spent kneeling on your floor.
That's the arithmetic almost everybody does while the invoice is being written, and it's
the part that's out to be wrong.
In 2024, for every dollar Roto-Rooter took in, about 34 cents went straight back out
as wages to the people doing the work.
Which brings us back to Milwaukee.
Was Frank Blau.
And for the better part of two decades, he wrote a column in a trade magazine called
Plumbing and Mechanical, aimed squarely at other contractors, telling them they were
charging far too little and going broke politely.
He was not gentle about it.
He called the ones who wouldn't listen slugs, in print.
In a magazine they subscribed to, his argument was arithmetic.
A technician is paid for eight hours.
He is not paid by you for eight hours.
Loading the van, driving across town, where nobody's home, for work that never happens.
Every one of those hours costs the company exactly what the hour under your sink costs,
and not one of them can appear on anybody's invoice list.
So they get moved.
They come out of the hours that can be billed.
That was the number Blau spent 20 years shouting at his own trade.
Not what you charge.
What a single billable hour has to carry.
And it has to carry a lot.
The median American plumber, pipe fitter, or steam fitter, earned $30.67 an hour in
May of 2025, according to the Bureau of Labor Statistics.
That's a decent living, and it is nothing like the rate implied by your invoice.
Blau's response to that gap was to write the whole thing out as a list.
In one column he took apart one contractor's price for a single toilet installation, and
the list ran the parts, the technician's wages, and the permit fee, the commission
the technician earns for selling the fixture.
Then every hour of overhead the job has to absorb, and last of all the profit, worked
out deliberately as a share of the final price, rather than tacked on at the end.
Nothing on that list was hidden from the contractor.
All of it was hidden from the customer.
The phone call is on the list, too.
Roto-Rooter measures three separate places a job can evaporate, whether a call becomes
a booked appointment, whether the appointment survives long enough for a van to be dispatched,
and whether the technician who actually arrives at the door converts it into work somebody
pays for.
There's a name for the customer who books a plumber and then unbooks him.
It's a void.
It has a rate.
Somebody in Cincinnati watches that rate every quarter.
All three stages leak.
Every leak gets paid for by the jobs that don't.
And underneath the whole list sit the hours nobody ever bills for, which start long before
the van does.
Most American states won't let a plumber work OSUN-supervised without a license, and the
road to one runs through an apprenticeship of four or five years, or call it eight to
ten thousand hours of paid training before he's legally allowed to be alone in your bathroom.
Most of those hours are spent doing the dull end of somebody else's job.
Which is exactly why, when he looks at your leak, he knows what it is and about the time
it takes you to finish asking.
You're not paying for those few seconds.
You're paying a slice of everything that had to happen before them, and there's no line
on the invoice where that shows up.
There's no honest way to write it.
Blau's whole complaint about his own industries was that it was wide open, and when mechanicals
hit a nerve, it could hang up a sign, a tune, and the ones who then guessed at their prices
spent whole careers winning work that cost them more than it paid.
Which leaves one more line, and it's the one that surprised me most.
In 2024, Roto-Rooter spent about eight cents of every dollar of revenue on advertising.
Not on vans.
Not on wages.
On being findable.
Eight cents of your bill went to making the phone ring, and that phone rang for plenty
of people who called three companies, picked one, and never thought about it again.
You paid for their comparison shopping.
Then there's the shape the number arrives in.
What Blau championed, and what most of the trade now runs on, is flat rate pricing.
A book of jobs with a price printed beside each one, handed to you at the door.
No hourly figure anywhere on the page.
That's not an accident of formatting.
He wrote it out plainly.
In a column in December of 2000, under flat rate, the unbilled time and every other cost
of the business are, in his words, built into your hourly rate, which you know, but do not
quote to customers.
The magazine that published him for 20 years said much the same in its tribute to him.
That's the whole thing.
And it isn't really a trick.
It's a decision about what to show you.
Here's what I think, and it is only what I think.
The flat rate book solved the contractor's problem and handed the customer a brand new
one.
A number can be assembled out of real costs and open profit and still land like a mugging
because a price you can't see inside is a price nobody can argue with.
The trade fixed its accounting and gave away its defense.
Every plumber who's been called a crook across a kitchen table since is paying the interest
on that.
So, one rubber washer, one wrench, and a number at the bottom of a page that doesn't appear
to match either of them.
It doesn't match.
It was never meant to.
The washer isn't what you bought.
You bought the drive over, the appointment that cancels that morning, a sliver of somebody's
fifth year as apprentice, the cover that pays out if the ladder goes, the ad that put that
number in front of you instead of a different one, and just 18 cents on the dollar for the
people who put the whole machine together.
All of it flattened into a single line, and a line is so much easier to print than a story.