The Plumber Richardson Has Kept on the Fridge Since 1946
We're a family company, and our customers ask for our crew by name. Whoever comes out will tell you the price before any work starts, and there's no trip charge in our service area.
What We Fix and Install
From a dripping shutoff valve to a whole new bathroom, the same crew does the work and gives you the price first.
- Water HeatersRepair or replace the tank water heater in your garage or closet.
- Tankless Water HeatersPut in a tankless unit, or service the one you already have.
- Leak Detection and RepairFind the leak, including slab leaks under the floor, and fix it.
- Sewer and DrainClear slow or blocked drains and sewer lines without damaging the pipe.
- Gas LinesTrack down a gas leak, then repair the line or run a new one.
- FixturesFaucets, toilets, garbage disposals and shutoff valves, installed or repaired.
- Shower PansReplace a leaking shower pan before the water reaches the floor.
- Bathroom RemodelsNew plumbing and tile for the bathroom you have in mind.
- Kitchen RemodelsSinks, faucets, disposals and the plumbing behind a new kitchen.
Neighbors Ask for Our Crew by Name
Read all 86 reviews on Google"The entire experience from booking, to job completion, was the truly the best we've had with home service companies. Mario and crew were fantastic! They were able to come out on very short notice to resolve our gas leak. Mario was very personable and walked us through the whole process. Customer for life. Thanks Koen Plumbing team!"
"Stellar experience with Koen Plumbing today. Needed new shutoff valve under my sink. Had Koen here first thing this morning and got it taken care of. They were able to respond within 24 hours. Alphonso and Adrian were polite and efficient and I very much appreciated them."
AlfonsoPat R., Google, October 2026 "Koen is the best! Honest reliable service. Never try to upcharge. I've always been very happy with the service. My family has been using them for years. Today's service was a tub drain, but used for many things: water heater, garbage disposal, pipe repair, gas line, and toilet repair."
Angela A., Google, June 2026 "Mario and his helper arrived on time, asked what was needed and prepared a quote. They then proceeded to replace stems in three sets of faucets and rebuild a toilet. They were friendly, efficient and most knowledgeable. When they needed to go to the supply store for older parts, they returned quickly."
"I now know who will replace our water heater, which is aging, and I have found my plumber. Thank you Mario."
MarioLinda, Google, July 2026 "Koen Plumbing came out quickly on an icy day for an urgent plumbing issue. They were able to put a temporary resolution in place while waiting for warmer weather to do further troubleshooting, and provided estimates for both best and worse case scenarios, so I had an idea of what to expect. Then they came back as soon as the weather improved enough to do the work. Would definitely recommend!"
Deirdre G., Google, February 2026 "Koen Plumbing has been my first & ONLY choice for any needs I have in my home for over 15 years. From their excellent customer service to their masterful expertise, in all small business categories, Koen is the BEST!"
Vicki D., Google, March 2026
Richardson Life Magazine readers and our neighbors on Nextdoor both voted us a winner in 2026.
What Happens When You Call
Here's how a visit works, from the first phone call to the cleanup.
You Call Us
Call 972-406-8076 and our Richardson office will set up a time that works for you.
We Come Out With No Trip Charge
Anywhere in our service area, there's no charge just for us to show up and take a look.
You Get the Price Before We Start
Your plumber explains what's wrong and gives you the price in writing. Nothing starts until you say yes.
We Fix It and Clean Up
We do the work you agreed to and leave the area the way we found it.
Family-Owned in Richardson Since 1946
Koen Plumbing has been fixing North Texas plumbing since 1946, and it's still a family business today. Some of our customers have had our number for more than 15 years, and one told us it's been 40.
Read our story
Where We Work
Our office is on Bowser Road in Richardson, and we work in homes across these cities. If you don't see yours, call and ask.
Koen Plumbing, Inc.
405 N. Bowser Road, STE 4B
Richardson, TX 75081
- Addison
- Allen
- Carrollton
- Coppell
- Dallas
- Fairview
- Farmers Branch
- Flower Mound
- Frisco
- Garland
- Highland Park
- Highland Village
- Irving
- Lewisville
- Lucas
- McKinney
- Mesquite
- Plano
- Prosper
- Richardson
- Rockwall
- Rowlett
- Sachse
- Southlake
- The Colony
- Wylie
Rather Write? Leave Us a Note
Tell us what's going on and someone from our office will call you back during business hours.
Water coming through the ceiling or a smell of gas? Don't wait for a call back. Call us now.
CALL 972-406-8076- Monday to Friday8:00 a.m. to 5:00 p.m.
- Saturday8:00 a.m. to 2:00 p.m.
You can call any time, day or night. A person answers after hours and books your visit for the next working day.