Tenant Fit-Outs · Clarksburg, MD
Tenant Fit-Out Plumbing
From plans to plumbing.
If your business’s plumbing is not installed properly the first time, it becomes a long-term problem. We install new plumbing fixtures and piping for commercial fit-outs across Clarksburg and Montgomery County, working from your plans through rough-in, fixtures, and final inspection, so your space opens on time and stays trouble-free.
Work from your plansPermits & inspectionsOn-schedule rough-in
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Open on time
Fit-out specialists
The basics
Get it right the first time
A commercial fit-out sets the tone for your space, your workplace, restaurant, retail shop, office, salon, or hotel, and the plumbing is the part nobody sees until it goes wrong. We handle it end to end: reading your architect or contractor plans, pulling the right permits, running new supply, drain, and gas piping, setting fixtures, and passing inspection. Doing it right the first time means no leaks behind finished walls, no failed inspections, and no costly rework after you open.
What we do
Fit-out plumbing services
Everything your new commercial space needs, from the pipe in the walls to the fixtures on the wall.
Plumbing Rough-In
Supply, drain, waste, and vent piping run to your plans before walls close, the foundation of the whole job.
Fixture Installation
Toilets, sinks, faucets, water heaters, and specialty fixtures set, connected, and tested.
New Piping & Repiping
New water, waste, and gas lines, or replacement of existing piping that will not meet your build.
Plan Review & Permits
We review the plumbing on your plans, pull the permits, and coordinate the inspections for you.
Kitchen & Bar Build-Outs
Food-service plumbing done right: grease traps, gas, pre-rinse, prep sinks, and equipment hookups.
Restroom Build-Outs
New and ADA-compliant restrooms, from rough-in to fixtures, built to code for public use.
How it works
From plans to plumbing
A clear path from blueprint to a space that is ready to open.
1
Review the plans
We study your plans, flag any plumbing issues early, and give you a clear scope and estimate.
2
Permit & schedule
We pull the permits and coordinate with your GC and trades to keep the project on track.
3
Rough-in the piping
We run supply, drain, waste, vent, and gas lines to code before the walls close.
4
Set fixtures & inspect
We install and test fixtures, then handle final inspection so you are cleared to open.
Why it matters
The cost of getting it wrong
Fit-out plumbing is buried in walls and floors. Mistakes are expensive to fix later, so we get it right up front.
Failed inspections
Plumbing that is not to code fails inspection and delays your opening, and your revenue.
Leaks behind finished walls
A rough-in mistake found after drywall and tile means tearing it back open. Get it right the first time.
Undersized or wrong piping
Lines that are too small or wrong for the use cause pressure and drainage problems from day one.
Code and ADA misses
Commercial and ADA requirements are strict. Missing them means rework and liability.
Schedule delays
Plumbing that falls behind holds up every other trade. We coordinate to keep you on track.
Patchwork from multiple plumbers
One crew that owns the whole fit-out avoids the gaps and finger-pointing of piecemeal work.
Have plans? Let's price your fit-out.
Book OnlineCall (301) 972 2223
Spaces we build out
Fit-outs for every kind of business
Whatever you are opening, we have the plumbing covered, from rough-in to the final fixture.
Restaurants & Bars
Kitchen and bar plumbing, grease traps, gas, and food-service fixtures built to health code.
Retail & Offices
Restrooms, break rooms, and tenant spaces fit out cleanly and on schedule.
Medical, Salons & More
Specialty fixtures and plumbing for medical, dental, salon, and other build-outs.
Local, licensed, on schedule
Why this matters here
Opening a business in Clarksburg, Gaithersburg, or anywhere in Montgomery County means navigating local permits and inspections, and a plumbing delay holds up your whole build. As a local, licensed contractor, we know the jurisdictions, coordinate with your GC, and keep the plumbing on schedule so you can open on time.
- Bring us in early to catch plumbing issues on the plans
- We pull permits and coordinate inspections
- One crew owns the whole plumbing scope
- We work to your GC's schedule to hit your open date
Got plans?
Send them over
Share your fit-out plans and we will review the plumbing scope and give you a clear, upfront estimate.
The build-out crew
A crew you are glad to let in
Fit-out plumbing rewards experience and coordination. Our own trained, licensed, background checked crew reads plans, works cleanly alongside your other trades, and stands behind the work, so the space you open stays trouble-free.
From our neighbors
What your neighbors say
Rating
Marina W.
August 26, 2026
The best plumbers in the Bethesda area! We have worked with over 4 companies and none could figure out our issue until we called Clarksburg. They are honest, flexible and communicative. Wonderful experience from start to finish.
Douglas F.
August 26, 2026
John and Maddy were excellent! Professional and beyond. Not only did the effectively fix our kitchen leak, but gave solid recommendations to fix other problems in advance. Appreciate them! Arrived on time, came quickly . We are definitely using this company for the rest of our remodeling planned. Thank you again. Doug Frankel Cost was no issue. They stand behind their work as they did today
Kevin
August 20, 2026
Knowledgeable technicians who explained everything in detail and did a great job installing my new water heater.
Lynn A.
August 18, 2026
We had our first experience with Clarksburg Plumbing & now we're sold! Charlie replaced our powder room toilet & did a great job. We moved to our house 3 years ago (& needed a new plumber) so we're happy to a great plumber now. Highly recommend!
Stephanie B.
August 13, 2026
Booked an apt with Clarksburg plumbing at 7am and by 9am they were at my house. Seth was a great tech that explained anything he was doing and answered my questions. would use Clarksburg plumbing again.
Susan F.
August 11, 2026
Highly recommend John Brown from Clarksburg Plumbing LLC! Yesterday John flushed and descaled our tankless water heater. We've gotten used to waiting and waiting for service people. That's not the case with John. He arrived pleasantly early for both the initial visit (for a no-cost estimate) and for the actual service call. He was personable, knowledgeable, and very patient with our many questions. He really helped us understand the ins and outs of this new-to-us technology of tankless water heaters. We're already recommending him to our neighbors!
Judith
August 10, 2026
John and Maddie were professional and customer focused. They completed several plumbing projects efficiently and verified my satisfaction with the work. John diagnosed a plumbing problem for future remediation. Great people and company.
Daniel J.
August 7, 2026
I had Clarksburg Plumbing come out for a minor home plumbing repair. Seth and Maddie were on time, friendly, and professional. They provided a free estimate, and I went ahead with the repair. The repairs took just under 2 hours and I was completely satisfied with the service. I will definitely use Clarksburg Plumbing again in the future. Thanks, Seth and Maddie!
Dennis D.
August 7, 2026
We had a very good experience with Clarksburg this year. A new fresh water pipe from the street and cleaning the waste pipe. From Brady in the office to John Brown and his team on site (Franklin and Chris) everything went smoothly, successfully, and on time. Would highly recomnend!
Ryan
August 7, 2026
Charlie S. was efficient and friendly. He also answered some of my plumbing questions which I greatly appreciate. I will be using Clarksburg Plumbing in the future.
Lisa W.
August 7, 2026
I recently used Clarksburg Plumbing for a condo repair of my main water turnoff valve and my outside hose bib. It required coordination with DC Water and the condo, and Clarksburg was extremely helpful, professional, and patient in the process. They came out a few times to evaluate and troubleshoot the issues, and then ultimately performed/made the repairs. Garrett and John Brown were the first to help, both very kind, knowledgable and highly skilled, and then Pablo (along with apprentice Tevon) made the final repairs. Not only did they do a great job, explaining everything to me in the process and checking after the water was restored to the condo, they also helped out one of the other owners that was having a sudden, luckily minor issue, as well. It’s a relief to know that I finally have a plumbing company that I can rely on for any future issues.
J C.
August 3, 2026
John Brown & Maddie did a great job with installing our new sump pump and battery backup--very informative, patient and thorough.
Daniel C.
August 3, 2026
Many thanks to John and Maddie for their excellent work and cheerful attitude.
Joye K.
July 31, 2026
We had a fire at our house 3-Jul-2025. Our contractor used Clarksburg Plumbing for all of our plumbing needs as we rebuilt our house. Pablo was with us from the beginning until all work on the house was completed a year later. Pablo was the lead plumber from Clarksburg Plumbing. He worked on the plumbing rough-in in December through February this past winter in bitter cold through the end of July 2026 when work was finally completed. Pablo quietly does his work. It’s clear that he is very skilled but he is not arrogant in any way. Rather, he is very engaging, takes suggestions under consideration and employs them as warranted, and is always kind even when I interrupt his work. Pablo represents Clarksburg Plumbing very well. It was my pleasure working with Pablo.
Prabhu P.
July 30, 2026
John & Maddie were great to get me scheduled for a potable water replacement
Erin M.
July 30, 2026
Properly identified the source of my leak after multiple other plumbers/companies couldn’t figure it out. Were thorough in explaining what they were doing, how they arrived to their determination, and gave advice on how to proceed with next steps that were outside their scope of operations. Thanks Pablo and Tevon
Jason R.
July 28, 2026
So grateful for you all, after 10 years and multiple plumbers your techs Garrett and Brady found the problem in 10 mins. Professional, friendly, knowledgeable, and we are more than satisfied with the work. Great company, great employees. We have a plumber now!
Ajay P.
July 23, 2026
We had a severe blockage in our kitchen sink drain, causing water to back up into both the sink and the dishwasher. Seth and Brady arrived on time, quickly identified the issue, and did an excellent job clearing the kitchen drain. They also fixed the dishwasher drain line, which is now working perfectly. They were professional, efficient, and courteous throughout the process. I highly recommend them to anyone needing plumbing services.
Abbie C.
July 22, 2026
Recently had an issue with my hot water heater in the restaurant I worked at. Clarksburg plumbing was quick and efficient and I was lucky enough to get John and Maddie as my techs! They were knowledgeable and helpful and fixed the issue in no time. I can’t recommend Clarksburg Plumbing enough and especially John and Maddie. They were honestly wonderful.
Anna F.
July 22, 2026
John and his assistant, Maddie, replaced an outside water valve and reviewed plumbing in a bathroom. They did excellent work, gave good advice and were friendly and nice. We were pleased with the work and will contact them at Clarksburg Plumbing for any plumbing needs in the future.
L C.
July 20, 2026
John was very knowledgable and provided all the details I needed to make my decision on what I wanted. Matty give me the exact estimates to consider. They were very curteous and professional. Thank you.
Chantell P.
July 20, 2026
John and Maddie arrived on time and were professional and kind! All issues were resolved without issue! Highly recommend!
David G.
July 19, 2026
Happy we called them. It is refreshing to deal with a company a company with great customer service and honest techs. Highly recommend you call them.
Christine K.
July 18, 2026
Seth was very professional, quick and efficient. Also kind and personable.
Good questions
Tenant fit-out FAQ
What owners, GCs, and property managers ask us most.
Do you work from architect or contractor plans?
Yes. We review the plumbing on your plans, flag any issues early, and build to spec, coordinating with your architect, general contractor, and other trades throughout the project.
Do you handle permits and inspections?
We do. We pull the required plumbing permits and coordinate the rough-in and final inspections, so you do not have to manage that piece yourself.
Can you do restaurant and bar build-outs?
Yes. Food-service plumbing is a specialty, grease traps, gas lines, pre-rinse units, prep and bar sinks, and equipment hookups, all built to health and plumbing code.
Do you do both rough-in and final fixtures?
Yes. We handle the full scope: supply, drain, waste, vent, and gas rough-in before walls close, then fixture setting, connection, testing, and final inspection.
Can you keep up with our construction schedule?
Absolutely. We coordinate with your GC and trades and staff the job to hit your milestones, because a plumbing delay holds up everyone else.
What types of spaces do you fit out?
Restaurants and bars, retail, offices, medical and dental, salons, and other commercial and tenant spaces across the area.
What areas do you serve?
We serve Clarksburg, Germantown, Gaithersburg, Rockville, Damascus, Potomac, North Bethesda, and the surrounding Montgomery and Frederick County area.
Open on timeLet's build it right.
Let's Flow.
Planning a fit-out or build-out? Send us your plans or call to talk it through. We handle the plumbing from rough-in to final inspection and coordinate with your team to open on time.
Book OnlineCall (301) 972 2223