The $28 Already on Your Tax Bill: What a St. Louis Plumber Costs
Revised October 25, 2026
How do you calculate labor cost for plumbing?
Plumbing labor is billed one of two ways: hourly, where time on the job is multiplied by the shop’s rate and parts are added, or flat rate, where the repair carries one set price however long it takes. Most bills also start with a service call fee, so ask whether that fee covers any actual work.
Keep reading ↓Gurgle. Then the smell. The floor drain in the basement of a brick two-family off Gravois is coughing up grey water every time somebody upstairs flushes, it’s Sunday night, and your socks are already wet because you went down the stairs before you found the light string.
You call the first number that comes up. A real person answers, and the relief in your chest is almost embarrassing. There’s a service call fee, the voice says, and a tech can be there tonight. You say yes. Nobody mentions a price for the actual work, and you don’t ask, because the water is still creeping out from the drain cover and asking feels like haggling with a lifeguard.
That silence on the phone is where most plumbing bills go wrong. Not the rate. The silence. And if you own a house inside the City of St. Louis, there’s a second thing nobody on that call will mention: you have been paying toward part of a sewer repair on your property tax bill for years. Most people find out after they’ve paid a plumber for the whole thing.
So before you say yes on that call, with the phone warm against your ear and the drain still burping, say three sentences. “What does the service fee cover?” “Will you give me the price before you start?” And if it smells like the sewer line: “Are you licensed with the City, and will you send me the camera video?” That last one isn’t fussiness. A plumber’s statement plus that video is what the City asks you to send before its sewer fund will pay for a break under the street.
How do you calculate labor cost for plumbing?
Plumbing labor gets billed one of two ways. Hourly means the time on the job, multiplied by the shop’s rate, plus parts. Flat rate means the repair carries one set price whether it takes the tech twenty minutes or the whole afternoon. Nearly every bill also starts with a service call fee, and the only thing that matters about that fee is whether it buys you work or just a visit to your driveway. You aren’t buying hours. You’re buying a drain that stops gurgling, so for routine work like a toilet rebuild or a water heater change-out, a flat price set before the wrench comes out keeps a slow tech or a stubborn fitting from becoming your problem.
One St. Louis number you can check for yourself before the van pulls up: the City’s application fee for a plumbing permit is $30, and the other plumbing permit fees are set by City ordinance and posted by type. Ask for the permit as its own line on the quote, so you can hold the number up against that page at your kitchen table.
And the hourly rate is not the plumber’s wage. The billed hour carries the truck, insurance, workers’ comp, the license, the drive between jobs and the person who picked up your call on a Sunday. When a rate sounds too good, something on that list usually isn’t being paid for. In an old brick basement on the south side, the bigger number on your invoice usually isn’t labor anyway. It’s the sewer lateral. Which brings us to the money you’ve already paid.
The $28 you already paid
Here’s the part that stings. The whole sewer lateral, the pipe running from your house out to the MSD main under the street, is your private property, and so is every root and crack in it. But the City runs a Sewer Lateral Repair Program, and every owner of a residential property with 6 or fewer units pays a $28 fee on their real estate taxes to fund it. That money repairs broken laterals under the public right of way, the stretch under the sidewalk and street, which is often the most expensive stretch to dig.
The catch is order of operations. The program won’t pay to clear clogs or tree roots, anywhere on the line, and it won’t touch a break under your yard. It wants a plumber licensed in the City of St. Louis to inspect the line, and if the break sits under the right of way, you send the plumber’s statement and the video to the Street Department at 1900 Hampton. Your property taxes have to be fully paid to qualify. Call the Department of Streets at (314) 647-3111, Monday through Friday, 8:00 to 4:30, before anyone starts digging up the sidewalk on your dime.
So when the camera goes down the line and the tech turns the screen toward you, the question that can save you the most money on this whole page is a short one: “Where exactly is the break - under my yard, or under the sidewalk?” Ask it while the picture is still on the screen.
Who’s allowed down your basement stairs
Inside the City, plumbing permits are issued to licensed plumbing contractors certified by the City of Saint Louis. The City’s permit page lists the kind of work that needs a permit and an inspection: new plumbing fixtures, soil pipe connections, and the replacement of sewer laterals, soil stacks, vent pipes and water supply lines. In an old brick house on the south side, that list covers most of the jobs that turn into real money.
Now the number that ends an old excuse. The application fee for all plumbing permits is $30, and most applications are approved within 1 to 3 business days. So when someone offers to “save you the hassle” of a permit, you know exactly how much hassle they mean. Work done without a required permit doesn’t vanish. It waits behind the drywall until you sell, and then it’s your problem at the closing table.
Before you sign anything bigger than a drain clearing, call the City’s Permit Section at (314) 622-3313, 1200 Market, Room 425, Monday through Friday from 8:00 AM to 4:30 PM. Ask two things: is this contractor licensed with the City, and does this job need a permit. A few minutes of hold music in your ear is the cheapest insurance you will ever buy on a plumbing job. If you live out in the county, the question stays the same: ask the contractor who issued their license and who pulls the permit, then check.
What an old St. Louis house adds to the bill
The plumber didn’t make your house old. But age is the line item nobody quotes on the phone, and it shows up the moment a wrench touches metal.
Galvanized supply pipe is the classic. It rusts from the inside, so the first symptom is an upstairs shower that dribbles while the kitchen tap runs fine. The cost problem is that galvanized often won’t survive being disturbed. You call about a faucet, the tech gives the old fitting a quarter-turn, and the pipe behind it crumbles like wet cardboard. Now the faucet job is a repipe of that run. A good plumber warns you before touching it, not after.
Cast iron drain stacks rust the same way, inside out, and they tend to fail as a damp patch low on a basement wall instead of an obvious drip. Clay sewer laterals are the third. Roots find the joints, the line snakes clear, life is fine for months, and then that gurgle comes back on another Sunday night. Snaking treats the symptom. A camera run down the line tells you whether you’re looking at routine maintenance or a lateral that needs replacing, and where the break sits decides whether that $28 fund can help.
Three questions that make any quote honest
You don’t need to know what a fair price is. You need a process that makes an unfair one obvious. Ask these out loud, every time.
“What does the service fee cover?” Trip only, trip plus diagnosis, or trip plus the first stretch of work. The answer tells you what the first line of the invoice will say before anyone gets wet.
“Will you give me the price before you start?” On anything past the diagnosis, you should hear a number and say yes to it. A plumber who works first and prices afterward has quietly taken away your right to say no.
“Can I see it?” If someone says the whole sewer line has to go, ask to watch the camera footage. A legitimate company turns the screen around without a pause. Being told to replace a lateral with no camera run is the loudest alarm in residential plumbing.
Water shut off and nothing to cook on until the plumber leaves? St. John’s whole food scene is a short drive and one click away.
Also listen for manufactured urgency. Real emergencies exist: water you can’t shut off, sewage coming into the living space, no water in the house at all, a water heater leaking from the tank body. A discount that “expires tonight” on anything else is a sales move, not a diagnosis.
People are asking
Does an emergency plumber charge more on a holiday or weekend in St. Louis?
Not always, and you want that answer while the water is still ankle-deep, before anyone backs a van into the driveway. Roto-Rooter’s St. Louis branch says on its own site there is “no extra charge for nights, weekends, or holidays,” and that it gives upfront pricing before any work begins. Ask every shop you call the same two things - is there an after-hours fee, and what’s the price before the work starts - and get the answer in a text you can hold up when the invoice comes.
Tonight, or Monday morning?
After-hours dispatch costs more almost everywhere, so the cheapest plumbing decision you’ll make is knowing what can wait. A single slow drain, a running toilet, a dripping faucet, low pressure at one fixture, a drip you can catch in a bucket with the supply valve closed - all of that can usually wait for a daytime appointment and a second quote.
What turns most emergencies into Monday appointments is a valve. Find your main water shutoff on a calm, dry afternoon, with a flashlight and no panic. In a lot of older St. Louis houses it sits in the basement on the wall where the water line comes in from the street. Give it a turn so you know it moves. If you ever smell gas, skip all of this: get out of the house first and call the gas utility from outside.
Want a plumber who’ll answer those three questions without flinching? Start with the St. Louis plumbers on St Louis Near Me Directory, then make the call to City Hall before anyone opens a wall.
If you’re the plumbing shop, the drain crew or the one-truck plumber who gives straight prices, the homeowner reading this with wet socks is looking for you right now. List your business or see who AI names instead of you and get more customers.
Getting a fair price without a bidding war
In a true emergency you take whoever can come. For anything planned, get more than one quote and make them comparable: same scope, in writing, naming the fix, the parts, who pulls the permit and the warranty on the labor. A short warranty on workmanship tells you how confident the shop is in its own work. And ask what happens if the job changes once a wall is open. The right answer is “we stop and call you.” The wrong answer is silence, followed by an invoice.
If the water came in from outside instead of from a pipe, our guide to basement waterproofing in St. Louis is the other half of that problem.
Pricing more than one trade on an older house? These use the same quote-comparing approach:
- What a roof replacement costs in St. Louis
- What an electrician costs in St. Louis, including what old wiring adds to a quote
Frequently asked questions
What is a normal call out fee for a plumber?
It varies by shop and by hour, and it climbs at night and on weekends. The useful question isn’t the amount but what it buys: trip only, trip plus diagnosis, or trip plus the first stretch of work. A company that won’t tell you the fee on the phone is one to skip.
How to tell if your plumber is overcharging you?
Judge the process. You should hear a price before work begins, get an invoice that separates parts from labor, and see evidence for any big diagnosis. Nobody should recommend replacing a sewer line without running a camera and showing you the footage. Pressure to sign tonight is a sales tactic.
What is the normal cost to replace a hot water heater?
It depends on the unit, the fuel, the venting and whatever code upgrades your house needs, so get a written flat-rate quote that lists all of it. Going tankless usually costs more because gas lines and venting often have to change too. Ask whether the job needs a permit and who pulls it.
What is the labor cost to install a 50 gallon hot water heater?
Labor is the part that swings. A straight swap in an open basement is a simple job for a plumber. A unit wedged in a tight corner, venting that has to be reworked, or old galvanized connections that crumble when they’re removed all add time, which is why a flat-rate quote is the safer way to buy it.
What is the hourly rate for a plumber in Illinois?
The Illinois side of the St. Louis area draws on the same pool of plumbers, so the same rules apply: compare finished-job quotes, not hourly rates, and ask what the service fee covers. Licensing works differently across the river, so ask where the contractor is licensed.
Why do plumbers charge so much to replace a water heater?
The tank is only part of it. The rest is licensed labor, venting, code upgrades, permits where they’re required, and hauling the old tank up the basement stairs and away. A quote that lists each piece is easier to trust than one lump sum.
How much does Home Depot charge to replace a hot water heater?
Big-box stores usually send local installers, so the price tracks your market and the crew rather than a national sticker. Whatever the quote, ask what it leaves out. Permits, venting changes and haul-away are the usual carve-outs.
Written by a dedicated team of St. Louis locals who live, work, and play right here in the St. Louis metro. Founder Lane Forman and team are committed to building the region’s most trusted directory by verifying listings and connecting local businesses with loyal customers across Missouri and Illinois.