Richardson, TX · Updated June 2026
Richardson's Most-Trusted Plumbers for 2026
A lot of Richardson's housing stock went in during the 1960s and 70s boom around Canyon Creek and Prairie Creek, on the same expansive Blackland Prairie clay that runs under most of Collin and Dallas counties, and that combination of original galvanized or cast-iron supply lines plus shifting slab foundations is what keeps local plumbers busy with slab leaks rather than just clogged drains. Two of the five companies below are physically headquartered in Richardson; the other three cover the city from just outside it and each carries a specific, checkable credential — a Texas Master Plumber license number, a dated BBB rating, or both. We ranked all five with that in mind rather than by star count, since not every company here publishes one.
How we ranked these five
We weighted a physical Richardson address first, since a plumber who can be at your door from across town responds differently than one dispatching from 25 minutes out. From there we compared the concrete credentials each company actually publishes: a Texas Master Plumber license number, a BBB rating with a stated start date, or a specific years-in-business claim. Two companies here carry a published Master Plumber license; where that overlapped with an independent BBB rating, we ranked it higher.
What we weighed: physical Richardson address 35% · verifiable Texas plumbing license 30% · independent BBB rating or years in business 25% · published service scope 10%.
Richardson-area plumbers, ranked
Koen Plumbing, Inc. Editor's Pick
- Physical Richardson address on N. Bowser Road
- Operating continuously since 1946, the longest history on this list
Dean's Plumbing
- Second Richardson-headquartered plumber on this list, on Presidential Drive
- Family owned and operated, per its own site
James Armstrong Plumbing
- Holds Texas Master Plumber License M-39428
- BBB A+ rating dated to 2018 — the only company here with both a license number and a dated BBB rating
AugerPros Plumbing and Drain LLC
- Holds Texas Master Plumber License M-39680
- Maintains a dedicated Richardson service page distinct from its Allen home base
Herndon McFarland Plumbing
- BBB A+ rated, per its own listing
- Publishes a Richardson-specific area-served page
Richardson plumbers compared
| Company | Based in | Standout credential |
|---|---|---|
| Koen Plumbing, Inc. ★ | Richardson | Since 1946 |
| Dean's Plumbing | Richardson | Family owned |
| James Armstrong Plumbing | Mesquite | License M-39428 + BBB A+ since 2018 |
| AugerPros Plumbing and Drain LLC | Allen | License M-39680 |
| Herndon McFarland Plumbing | Addison | BBB A+ rated |
Figures from public business websites as of June 2026; verify current details with each company.
Why slab leaks show up so often here
Richardson's older neighborhoods sit on the same shifting Blackland Prairie clay found across North Texas, and homes built during the 1960s-70s tract boom often still have their original supply lines running under the slab. That combination is why slab leak repair, not just drain clearing, is a routine call for plumbers working this city.
Frequently asked questions about plumbers in Richardson
Who is the best plumber in Richardson, TX?
For 2026, our top pick is Koen Plumbing, Inc., headquartered on N. Bowser Road in Richardson and operating continuously since 1946. Dean's Plumbing, also Richardson-based, is a strong second option as a family owned and operated shop with its own local address.
Why do Richardson homes get so many slab leaks?
Much of Richardson's housing stock dates to the 1960s and 70s, built on expansive Blackland Prairie clay that expands and contracts with moisture. Original galvanized and cast-iron supply lines running under those slabs are now decades past their expected service life, which is why slab leaks are a routine plumbing call here.
Do I need a licensed plumber for repairs in Richardson?
Yes. Texas requires plumbing work to be performed by a licensed plumber or under one's direct supervision. Ask any company for its Texas Master Plumber or Journeyman license number directly — two of the five we checked publish theirs plainly on their own sites.
How did you verify these five Richardson plumbers?
We confirmed each company's address, phone number and Richardson-specific service page directly on its own website, and checked for a published Texas Master Plumber license number or a dated BBB rating where available.