St. Louis & St. Charles County
About Landmark Plumbing
We've spent over two decades earning the trust of homeowners and businesses across the St. Louis metro — one honest job at a time. When you call Landmark, you're getting a real local plumber who shows up, communicates clearly, and gets it done right.
The Person Behind the Work
Meet Mark Schmitz,
Master Plumber
Mark founded Landmark Plumbing with a straightforward belief: plumbing done right shouldn't be a luxury. With 22 years of hands-on experience and a Missouri Master Plumber license, he's seen — and solved — just about everything the pipes in a St. Louis home can throw at you.
What separates Mark from the rest isn't just technical skill. It's the way he works — arriving on time, explaining the issue in plain language, and leaving your home cleaner than he found it. No upsells, no runaround. Just honest answers and quality work.
From emergency pipe bursts at midnight to whole-home remodels, Mark approaches every job with the same care he'd give to a neighbor's house. Because most of the time, it is a neighbor's house.
- Missouri State Master Plumber License
- 22+ years of field experience
- Residential & commercial expertise
- Fully licensed, bonded & insured
Why Landmark
What Makes Us Different
We're not a call center that dispatches strangers. When you hire Landmark, you know who's coming — and you know the work is backed by real expertise.
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Master-Level Quality
A Master Plumber license represents the highest certification in the trade. Every job Mark touches meets that standard — no corners cut, no temporary fixes.
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On Time, Every Time
We respect your schedule. You'll get a clear arrival window, a heads-up call before we arrive, and a technician who gets straight to work — no waiting around.
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Transparent Pricing
You'll always get a written estimate before any work begins. What we quote is what you pay — no hidden charges, no surprise line items on the invoice.
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Friendly, Local Service
We live in this community. We treat our customers the way we'd want our own family treated — with courtesy, patience, and a genuine desire to help.
A Plumber You Can Actually Count On
Finding a reliable plumber shouldn't feel like a gamble. At Landmark Plumbing, we've built our entire business on showing up when we say we will, fixing things the right way, and treating every customer with the respect they deserve. Whether it's a dripping faucet or a full plumbing overhaul — we're the call you make once.
Ready to experience plumbing service the way it should be? Give us a call or request a free quote below. We'd love to earn your trust.
Let's Get to Work
Call now for a same-day estimate, or fill out the form and we'll be in touch within the hour.