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Find Plumbing installers for a remodel or addition in Frederick

Avatar for Mahon Plumbing
Mahon Plumbing
4.6(
199
)

Serving Frederick, MD and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Recently used Mahon Plumbing for various plumbing needs around my house. As a new homeowner you can be skeptical on what’s behind your walls or in this case pipes. Mahon did an initial sewer line inspection and called them back to swap out toilets and install natural gas in my backyard for a grill and fire table. They were professional, honest, and extremely knowledgeable about all phases of my projects. I would recommend Mahon Plumbing for all of your plumbing needs!"
Tankless water heater installation
Tankless Water Heater Installation
Commercial drain cleaning
Sewer Line Video Inspection
Water heater replacement

+30

Response time1 hour
Response rate88%
Recommended by92%of homeowners
Avatar for Douglas & Son Services
Douglas & Son Services
4.6(
24
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"This company is very professional and extremely personable. Patrick went above and beyond to ***** my issues and I was extremely satisfied I will definitely be using this company again for all my heating/cooling and plumbing services. Thanks again for doing a great job."
Additional Photos
Additional Photos
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Additional Photos

+6

Response time11 hrs
Response rate94%
Recommended by94%of homeowners
Avatar for Horizon Services, LLC (MD)
Horizon Services, LLC (MD)
3.8(
1,467
)

Serving Frederick, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Hello, I am requesting assistance from a licensed plumber/gas fitter for gas service restoration at my property: 1239 Maple Ave. Baltimore, MD 21227 BGE has determined that the prior gas service was abandoned and is now processing the project as a new gas service line and exterior meter installation. BGE will be meeting me on-site on Tuesday, June 9, 2026, at 9:00 AM to review and approve the proposed exterior meter location. I need a licensed plumber/gas fitter who can either attend that BGE site visit or come immediately afterward to evaluate the work required on the customer side of the gas system. The scope of work includes: - Inspecting the existing gas piping to determine whether any portion can be safely reused; - Extending, repairing, or replacing internal gas piping as needed; - Establishing the new customer-side gas connection point for the exterior BGE meter; - Pulling the required gas/plumbing permit; - Performing the required pressure test; - Coordinating the requir"
Horizon Plumber under sink
Horizon Plumber in Kitchen with homeowner
Horizon Plumber crawl space
52 neighbors recently requested a quote
Recommended by89%of homeowners
Heuer Plumbing and Heating
4.4(
11
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"BB&B removed a faulty garbage disposal and installed a new one. The plumber, at my request, purchased the new unit on my behalf and selected one appropriate for the job without gouging me on the price. The work was done quickly and neatly and I was quite satisfied; I will certainly call them in the future."
Response time10 mins
Response rate100%
Recommended by90%of homeowners
Avatar for Family Plumbing Services LLC
Family Plumbing Services LLC
4.2(
13
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"My water heater started leaking on a Sunday. I reached out to Family Fire Service and they responded immediately. They had a new water heater out to my house the next day and installed in a few hours. The supervisor and the tech worked seamlessly to have us up and running. They provided quality service and at a very competitive price. I highly recommend Family Fire Service and Plumbing. KC"
WH Replace
Sewer Repair
Battery Back Up
Camera Inspection
Clogged Sewer Snake

+1

Response time5 hrs
177 neighbors recently requested a quote
Recommended by18%of homeowners
MGD Contracting LLC
4.9(
39
)

Serving Frederick, MD and surrounding areas

In business since 2007

Emergency services offered

"George was very prompt and provided great service. Came out quickly, gave accurate estimate, and completed work in the agreed upon time frame. I would use him and recommend his services as well. He was able to do a custom tile shower, tile floor, install toilet and double vanity to complete my bathroom in the basement. Very satisfied with the work that he did, he actually had to come in after the previous contractor I had decided he did not want to finish the job after starting it."
Recommended by100%of homeowners
Avatar for Excellent Plumbing
Excellent Plumbing
4.7(
179
)

Serving Frederick, MD and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"I was looking to replace my 13 year old water heater and called Excellent Plumbing to get a quote. I provided all the information to Mike and he gave me a quote over the phone. I really appreciated this because most of times contractors need to conduct a home visit. Mike was professional and answered all my questions before I agreed to the job. Afterwards, I sent pictures of the old heater and its location. Mike was right on time and got to work. It took about 4 hours. I am very pleased with my new water heater. I will be calling Excellent Plumbing for my any future plumbing jobs. I definitely recommend Excellent Plumbing for their professionalism, friendly customer service and superb work."
Recommended by92%of homeowners
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Showing 1-10 of 217
FAQs for plumbing installation for a remodel or addition projects in Frederick, MD

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 Frederick, MD 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.