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Find Plumbing installers for a remodel or addition in Washington DC

Avatar for DAY & NIGHT PLUMBER LLC
DAY & NIGHT PLUMBER LLC
4.9(
85
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 2020

Free estimates

Emergency services offered

"They were very professional. They showed up on time and did a great job. I was working from home and they caused minimal noise and disruption."
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+1

Response time10 hrs
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
4.4(
597
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 1935

Free estimates

Emergency services offered

"Roto Rooter did an awesome job replacing my main line. They worked all day and night to get the job done. Quality work at a great price. Again a huge thank you to Roland, Brandon, Wayne, Umasis, Dillion, Cliff, Damon, and Thomas. Awesome job ! Tight spot and a deep trench. Happy Holidays ! Hope you get some rest."
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+5

3 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Douglas & Son Services
Douglas & Son Services
4.8(
18
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 2018

Free estimates

Emergency services offered

"Charles and Kevin were outstanding! We were very impressed by the notifications to allow us to know precisely when they would arrive. They were very clear throughout the process on what was required, what the process itself entailed, the cost, and how much time was estimated for the project. In addition, they were very professional and friendly! We would highly recommend Charles and Kevin!"
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+6

Response time11 hrs
Response rate94%
Recommended by94%of homeowners
Avatar for Kozan Construction, LLC
Kozan Construction, LLC
4.8(
29
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 1985

Free estimates

Emergency services offered

"Frank and his team at Kozan did an absolutely incredible job on my house replumb! We had to replace our 1980s polybutylene pipes as they were finally starting to leak, and knew it would be an invasive job. I had 5 companies come out and quote me - Kozan came in the most reasonable, but that wasn't the only reason I went with them. When Frank was here doing his estimate, he was the only guy who really looked at the pipes, and started putting together a plan; having worked construction myself, this is exactly what I would've done. All the others were in and out with a handshake and a couple pics. Regarding the work, they replumbed the house with minor intrusion, and even took care to cut the drywall stud-to-stud to make my patchwork a bit easier. They did everything they could to keep the water running to all the lines not being worked on, and cleaned everything up every day before they left. All-in-all the job was very well done, and Frank was a true professional. Thanks Frank!"
Master bathroom walls and floor
Travertine tiles on Master bathrom
Cabinets and Counter Top
Kitchen Cabinets and Counter Top
Master Bathroom With Shower

+16

Response time6 hrs
4 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Len The Plumber Heating & Air, LLC
Len The Plumber Heating & Air, LLC
4.1(
610
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 1996

Emergency services offered

Credit card accepted

"His knowledge and expertise was great. A previous plumber had installed a wrong fitting. Rudy was able to get it fixed and explain everything to me and my wife. He did a wonderful job."
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Response time10 hrs
Response rate85%
3 neighbors recently requested a quote
Avatar for Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
5.0(
6
)

Serving Washington DC, DC and surrounding areas

Angi Approved

In business since 1935

Free estimates

Emergency services offered

"The technician, Marvin, could not have been more professional, knowledgeable and efficient. The main issue we wished to resolve was changing the shower. Marvin communicated the process involved, project pricing and returned on the second day with necessary parts to complete the job. The entire experience working with him was seamless and was a great way to start 2026!"
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+8

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FAQs for plumbing installation for a remodel or addition projects in Washington DC, DC

Adding bathroom plumbing to a detached garage starts with the basic line installation cost of $900 to $1,300. On top of this base expense, you'll need to budget for each fixture. A toilet costs  $250 to $550, sinks cost $150 to $800, and a shower or bathtub costs $400 to $1,900. The project will also require ventilation, moisture-resistant materials, and possibly electrical work. Remember that these costs reflect only the plumbing aspects—additional construction, finishing, and permitting expenses will apply to complete a functional bathroom space.

While certain aspects of garage renovation might be suitable for DIY enthusiasts, plumbing installation requires professional expertise. Connecting to water and sewer systems demands specialized knowledge and equipment, and improper installation can result in severe water damage, code violations, and potential health hazards. Most municipalities require permits for plumbing modifications, and these often stipulate that licensed professionals must perform work. Consider limiting your involvement to simpler tasks like painting or basic finishing work.

The timeframe for adding plumbing to a detached garage spans one to three days for the actual plumbing work. However, this represents only the active installation period. The complete project timeline must account for planning, obtaining permits (which can take weeks depending on your locality), coordinating multiple contractors if needed, and addressing any unexpected challenges that arise during installation. Weather conditions can also impact excavation and outdoor connection work.

Adding plumbing to a detached garage will likely increase your property taxes. Tax assessors consider plumbing an improvement that enhances property value and functionality. The specific tax impact varies by location and project scope. Converting a garage into living space with plumbing facilities can trigger significant reassessment in many jurisdictions. Before proceeding with your project, consult your local tax assessor's office to understand the potential tax implications and factor this ongoing expense into your decision-making process.

The Washington DC, DC homeowners’ guide to plumbing installations for a remodel or addition

From average costs to expert advice, get all the answers you need to get your job done.