"From the master-planned communities and new subdivisions to the historic homes near downtown — Roy Adams and Flat Rate Plumbing Company bring more than 40 years of honest, upfront plumbing to Mansfield."
Mansfield, southeast of Grand Prairie where Tarrant, Johnson, and Ellis counties meet, is one of the fastest-growing communities in the Metroplex — known for its highly rated schools, its charming historic downtown, and attractions like Big League Dreams and Hawaiian Falls. Its housing leans heavily toward new construction and master-planned communities, balanced by the older homes clustered around the historic center of town. Flat Rate Plumbing Company — owned and operated by Roy Adams, a Texas Master Plumber (License M-14388) serving the area since 1984 — has kept Mansfield-area homes running for more than 40 years.
Roy has worked on both ends of Mansfield's housing — the brand-new builds going up in the growing subdivisions and the older homes near downtown. Because Flat Rate is owner-operated, the person who answers your call is the same master plumber who does the work. No dispatch center, no middleman — just Roy and four decades of experience.
Even Mansfield's newer homes aren't immune to the region's plumbing challenges. North Texas's expansive clay soil shifts slab foundations and stresses the pipes below, a common cause of slab leaks — and new construction has its own first-decade issues, from settling to connections that work loose over time. Hard water wears on water heaters and fixtures throughout the area, and the sudden hard freezes that hit North Texas can burst outdoor and attic lines that weren't protected against the cold.
That's why Mansfield homeowners call Flat Rate Plumbing Company. You get a Texas Master Plumber (License M-14388) with more than 40 years of experience, upfront flat-rate pricing with no surprises, and an owner who does the work himself and stands behind it. Whether it's a slab leak, a water heater issue, a stubborn drain, or a new-home plumbing quirk, Roy diagnoses the real problem and fixes it right — one honest price, agreed before the work starts. Call or text Roy at (972) 641-4837 to get your Mansfield plumbing handled.
Every job is handled personally by Roy — honest work, upfront flat-rate pricing, and no middleman. Here's what Flat Rate offers across Mansfield and the surrounding communities:
Installation, replacement, and repair for gas and electric water heaters — dependable hot water, sized and done right.
Leaks found and fixed at the source — before shifting clay soil and hidden drips turn into costly damage.
Kitchen, bathroom, and utility faucets and sinks installed and repaired — no more drips or weak flow.
Running, leaking, and weak-flushing toilets repaired, plus clean, level new-toilet installations.
Clogged and slow sink and lavatory drains cleared quickly, so the water moves freely again.
Shut-off valves, outdoor hydrants, and frost-proof faucets — control and freeze protection for your home.
Real reviews from homeowners who have trusted Roy and Flat Rate Plumbing Company with their plumbing for years.
"Roy Adams has provided services for me during the past 25 years — slab leaks, water heater installation, faucet and sink installations, disposal replacement, toilet replacements, and more. He is trustworthy, reliable, and very knowledgeable in all aspects of plumbing. I have 100% confidence in Roy's work and advice."
— Clif Nelson
Grand Prairie, TX
"I rarely give five stars unless well deserved but Flat Rate Plumbing is by far the best plumbing company that I have ever hired. Flat Rate provided professional service, the plumber was extremely knowledgeable and friendly. If you are ever in need of an awesome plumbing company, please contact Flat Rate Plumbing — you will not be disappointed."
— Nefretiri
Grand Prairie, TX
"Roy has done plumbing jobs large and small on our house for 20 years. He is prompt, reliable, does great work and backs up his work always. We 'shop small' to support local contractors and businesses every chance we get, and Roy is our go-to for all plumbing needs. Highly recommend him and his work."
— Brenda Slade
Grand Prairie, TX
Locally owned and operated from Grand Prairie, Flat Rate Plumbing Company serves Mansfield and the surrounding communities with honest, upfront flat-rate plumbing.
Answers to the most common questions Mansfield-area homeowners ask before calling a plumber.
Flat Rate handles the full range of residential plumbing — water heaters, plumbing leak repair, faucets and sinks, toilets, garbage disposals, shower and tub valves, drain and stoppage clearing, shut-off valves, outdoor hydrants, and frost-proof faucets. Every job is done personally by Roy.
Yes. Roy gives you one upfront flat-rate price that covers diagnostics, labor, and parts, and you approve it before any work begins. There's no hourly meter running and no surprise charges at the end — the price you agree to is the price you pay.
You do. Flat Rate is owner-operated, so when you call you reach Roy Adams, the master plumber himself — not a call center or a dispatcher. You get straight answers from the person who will be doing the work.
They are — North Texas's expansive clay soil shifts with the seasons and stresses the pipes beneath a slab foundation, which makes slab leaks a common issue in Mansfield and across the area. Roy locates leaks and repairs them at the source, so the problem is genuinely solved.
Yes. Roy Adams is a Texas Master Plumber (License M-14388) and has been in the trade since 1984 — more than 40 years of hands-on experience serving Mansfield and the surrounding communities.
The fastest way is to call or text Roy directly at (972) 641-4837, or use the form on our contact page. Tell him what's going on and he'll get you a clear, upfront flat-rate estimate.
Based in Grand Prairie and serving the surrounding area. Click any community below to learn more about Flat Rate Plumbing there.
Call or text Roy today • Texas Master Plumber • Lic. M-14388 • Upfront Flat-Rate Pricing • Serving Mansfield & the Surrounding Communities