- BBB A+ Rated
- Mesquite Chamber of Commerce Member
- 30+ Years Experience
Plumbing Services in Sunnyvale, TX
Sunnyvale sits right next door to our shop in Mesquite. When your water heater quits or a drain backs up, we are minutes away, not across the metroplex. James Armstrong Plumbing has served Sunnyvale homes since 1995. A licensed Master Plumber leads the company, we hold a BBB A+ rating, and our 4.8 star Google rating comes from more than 30 years of doing the job right the first time.
Sunnyvale is not like other Dallas suburbs, and we know it. Big lots, long water service runs, and a mix of newer estates and older ranch properties create plumbing problems you will not see in a standard subdivision. We have worked on all of them.
Call 214-918-6109 for a real arrival window and a clear price before any work starts. Call before noon and we can often be there the same day.
Licensed Master Plumber
License #M39428
The “Armstrong Clean Promise".
We leave your home cleaner than we found it, or we pay for the cleaning. No mess, no stress — that's our guarantee.
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Our Services
Every Plumbing Service We Bring to Rockwall
We handle the full range of plumbing work in Rockwall homes and businesses. Several services have dedicated Rockwall pages with deeper detail.
Most Requested 
Plumbing Repairs and Installation
Get fast help from a trusted plumber in the DFW for leaks, fixture installs, and upgrades. We restore your plumbing with smooth, reliable work.
Water Heater Services
From quick fixes to full replacements, our water heater services in Dallas-Fort Worth, keep your hot water steady. We work on all standard and tankless models.
Most Requested 
Drain Cleaning Services
Stubborn clogs disappear with our drain-cleaning solutions in Texas. We clear the buildup fully so your drains flow the way they should.
Sewer Line Plumbing
Our team handles sewer line plumbing in the DFW , with careful inspection and precise repairs. We keep wastewater moving safely away from your home.
Gas Line Plumbing
Safe and reliable gas line plumbing in the DFW, is just a call away. Whether it’s a leak, repair, or new line, we follow strict safety standards.
Emergency Service
Emergency Service — Available 24/7
Burst pipe? Major leak? Don’t wait. Our emergency team serves the entire DFW area around the clock.
Technician available now
Proudly partnered with leading brands
Meet James Armstrong
Meet the Master Plumber Serving DFW: James Armstrong
James Armstrong has been a Mesquite-resident Master Plumber since 1995. What began as helping neighbors fix leaky faucets turned into a career — and eventually a family business, built on one simple rule: treat people right, do the job with integrity, and always stand behind your work. Today, James and his crew serve Mesquite, Rowlett, Sachse, Garland, and the broader east DFW metro, with most calls dispatched and on-site within 25 minutes of the Mesquite headquarters at 844 Dalworth Dr.
“In thirty years working Rowlett, Garland, and the Lake Ray Hubbard side of the metro, the drain calls almost always come down to two things: tree roots in the older Rowlett neighborhoods near the lake, and grease and hair buildup in the newer developments off Liberty Grove and Schrade Road. We camera-inspect first, then choose hydro-jetting or snaking based on what we actually see — not on what gets you to the highest invoice.”
James Armstrong, Master Plumber • Texas License M-39428 • Founder, James Armstrong Plumbing
Every job comes with the Armstrong Clean Promise — we leave your home cleaner than we found it, guaranteed. No excuses, no mess, no shortcuts. It’s the kind of commitment that’s earned us thousands of repeat customers and a reputation across the DFW metroplex for honest, reliable work.
Why Choose Us
Why DFW Homeowners Choose James Armstrong
Licensed & Certified Technicians
Our plumbers are fully licensed, professionally trained, and committed to delivering quality workmanship that meets today’s industry standards.
Transparent, Upfront Pricing
No hidden fees and no surprises. Just clear, honest pricing you can trust before we begin any repair or installation.
Fast & Friendly Service
We respect your time. Our technicians arrive promptly, work efficiently, and treat you and your home with courtesy and care.
The Armstrong Clean Promise
Floor protection, shoe covers, and a meticulous cleanup on every job. If your home isn’t cleaner than we found it, we pay for the cleaning.
5-Star Rated by Homeowners Like You
Local families choose us for reliable plumbing and friendly service. Your comfort, safety, and satisfaction are the reasons we do what we do.
Emergency Response Available
Afterhours and weekend emergency calls accepted. $199 emergency service fee — no surprises. Call (214) 918-6109.
Emergency Calls Accepted After Hours & Weekends as well.
Our Process
What to Expect When You Call
Call or Book Online
Speak with a real person, not a call center. We schedule at your convenience.
Same-Day Inspection
A licensed plumber evaluates your issue on-site. No guesswork.
Upfront Quote
You approve the price before work begins. The number you see is final.
Clean, Expert Work
Armstrong Clean Promise — we leave your home better than we found it.
Follow-Up Guarantee
We check in within 24 hours and follow up to ensure everything holds.
Free estimate · No obligation · Real person answers
Service Areas
Serving Communities Across Dallas-Fort Worth
- Allen
- Anna
- Arlington
- Azle
- Balch Springs
- Bedford
- Benbrook
- Blue Mound
- Blue Ridge
- Burleson
- Celina
- Colleyville
- Combine
- Dallas
- Everman
- Fairview
- Farmersville
- Flower Mound
- Forest Hill
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Plano
- Richardson
- Rowlett
- Sunnyvale
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FAQ
Frequently Asked Questions
Have questions? We’ve got answers. Can’t find what you’re looking for? Give us a call anytime.
Our shop is at 844 Dalworth Dr, Suite 10, Mesquite, TX 75149, right next door. Sunnyvale is one of our core service areas, and daytime response is usually well under an hour.
Often yes, especially if you call 214-918-6109 before noon. We give you a real arrival window when you book, not a vague all-day promise.
Yes. Business-hours emergencies run at standard rates. After hours, a flat $199 emergency fee applies, and we tell you that number before we dispatch. We are honest that we are not a 24/7 call center. You reach real people who actually show up.
Leave immediately with everyone in the house. Do not touch switches or use your phone until you are outside. From a safe distance, call 911 and Atmos Energy at 866-322-8667. Once the property is cleared, call us for the licensed repair.
Yes, for everything up to the septic connection: drains, supply lines, fixtures, water heaters, and gas. Tank pumping and drain field repairs need a licensed septic contractor, and we will point you to the right kind of company if that is what your problem turns out to be.
On large Sunnyvale lots, the most common answer is a leak in the long service line between the meter and the house, or a slab leak under the foundation. Both hide well. Leak detection finds them without digging up your whole yard.
See the pricing table above for typical ranges on the most common jobs. We give a firm price after seeing the work, and you approve it before we start.
Both. If the tank itself is leaking or the unit is past ten years old, replacement usually beats repair. If it is a valve, element, or thermostat, repair often makes sense. We tell you which and why.
Yes. We size it to your household, upgrade the gas line if the existing one is undersized, and handle permits and inspection.
Yes. James Armstrong holds Texas Master Plumber license M-39428 with a gas endorsement, and we carry full insurance on every job.
Yes. Offices, retail, schools, and warehouses, scheduled around your business hours where possible.
Call 214-918-6109 or use the form on this page. Describe the problem, get a range over the phone, and get a firm price once we see the job. Estimates are free on most standard work.
Comparison
What Plumbing Work Costs in Sunnyvale
You searched for costs, so here are real ranges. Every home is different, and we quote firm after we see the job. These typical Dallas-Fort Worth ranges let you plan before you call.
| Service | Typical DFW Range |
|---|---|
| Drain cleaning (single drain) | $150 to $500 |
| Hydro jetting | $350 to $800 |
| Water heater repair | $150 to $700 |
| Tank water heater installation | $1,200 to $3,500 |
| Tankless water heater installation | $2,500 to $6,500 |
| Toilet repair | $150 to $400 |
| Toilet installation | $350 to $800 |
| Faucet or sink repair | $125 to $350 |
| Water leak detection | $150 to $500 |
| Slab leak detection | $250 to $600 |
| Slab leak repair | $1,500 to $4,000 or more |
| Whole-home repiping | $4,000 to $15,000 |
| Sewer camera inspection | $150 to $450 |
| Sewer line repair | $1,500 to $5,000 |
| Trenchless sewer replacement | $4,000 to $15,000 |
| Gas line repair | $250 to $800 |
| Gas line installation (typical run) | $500 to $1,500 |
| After-hours emergency fee | $199 flat |
The price is approved by you before work begins. No surprise line items.