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Top-Rated Plumbing installers for a remodel or addition in Knoxville - Updated Nov 2026

F.H. Furr Plumbing Heating & Air Conditioning Inc
4.0(
25
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Emergency services offered

"Wonderful. Joe, Nelson, and the entire team did a great job. Polite, friendly, and efficient. Cost-effective too. We will definitely consider using them again for the inevitable kitchen and bathroom remodeling."
15 neighbors recently requested a quote
Recommended by54%of homeowners
Avatar for Miracle Method
Miracle Method
4.5(
174
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

In business since 1979

Free estimates

Credit card accepted

"First I would like to say I would NOT HESITATE to hire Miracle Method Surface Restoration from Kensington, MD again. The office receptionist (Margaret) and the two gentlemen that did the cut out and install (Carlos and Luis) were EXCELLENT and I would rate them an "A" in all aspects of their roles in the company. The C responsiveness and C Punctuality related to the following: (1) a prearranged appointment resulted in a no show by the company head (this is not our residence); and (2) the representative that did come the next day did not have any photos of previous work or paperwork to move the project ahead. If it wasn't for Margret in the front office we would not have used this company; however, she went out of her way to get a photo of a cut out, ensured that the proposal was revised for details, and scheduled the work. Like I said in the beginning, I would gladly hire and recommend this company. Just be sure to confirm appointments."
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+20

Recommended by87%of homeowners
Avatar for Porcelite
Porcelite
4.8(
164
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

In business since 1961

Free estimates

Credit card accepted

"Process was excellent from start to finish. The owner of the company came to our house to take measurements and provide an estimate that was very reasonable when compared to the more well-known national companies that franchise locally. Intaller was very professional, put drop clothes down in all areas, removed debris, etc. Installation took a full day but it was apparent that the time was well-spent to do things right. Very happy with the end result and to have supported a local, family-owned company."
Recommended by98%of homeowners
Avatar for Orbit Water Solutions
Orbit Water Solutions
4.8(
44
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"We could not be happier with the Puronics Hydronex iGen Whole home treatment system and Micromax 7000 drinking water system provided by Orbit Water Solutions. Justin, the marketing rep who sold us the system, was very professional and accommodating. Justin took about an hour to demonstrate a series of tests which reflected to quality of our water which had more chlorine and hardness than we expected. If you have concerns for lead, Orbit standard demonstration does test for it so you will need to have a separate test done. After some negotiation, we were able to settle on a deal which got us the system and financing for the next 10 years. Orbit provides annual maintenance services on the machine and there is a lifetime warranty on parts which really assured us we were making an investment to improve our water. The best part about it is that the system travels with you. For a small fee, Orbit will pack the system up and ship it to your next home if you move which was a big selling point for us. Orbit also threw in a subscription to PureSelects soap for the next 10 years which was a nice add-on. PureSelects provides every kind of soap or cleaning product you could ask for so it will be nice not to have to purchase additional soap products in the near future. Within a couple days, the installation team came out to install the system. They arrived on time but the installation took a little bit longer than expected. Turns out our the installed garbage disposal was too large to fit with the RO unit tank under the sink. Orbit was very accommodating though. Orbit purchased a new garbage disposal and installed it free of charge which I bet many companies would not have done. I highly recommend getting the larger of the under sink tanks for the RO unit. Even with the two gallon tank, my family has used up all the water in the tank. A 1 gallon tank would just not have been enough. The water in our house has been incredible since we installed the system a few months ago. We noticed an immediate impact to our skin and hair after using it and our drinking water certainly tastes better. Best of all, we feel confident in the quality of the water we use throughout the house to keep us safe and our appliances in good condition. We highly recommend the investment in the water treatment systems through Orbit."
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+9

Recommended by97%of homeowners
Avatar for KBR Kitchen & Bath
KBR Kitchen & Bath
4.6(
142
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

In business since 2014

Free estimates

Credit card accepted

"KBR Kitchen and Bath (Fairfax) did an incredible job remodeling our upstairs bathrooms! We initially reached out to several companies for quotes, but we selected KBR because the designer (Silviya) made such a great impression when she came to our home to take measurements and to collect our requirements for the project. She asked great questions, gave helpful advice, and she helped us select the right design and materials to ensure that we ended up with bathrooms that we love. Throughout the project, the Project Manager, Omer, kept us informed of the process and schedule, answered our questions, and he ensured that communication between us, the subcontractors, and the crew doing the work was seamless. The crew was at our house from 8-5 every day, they put down drop cloths to cover the floor from the front door to the bathroom, and they cleaned up well before leaving each day. The team was led by Urias whose attention to detail, eye for design, and experience resulted in bathrooms that exceeded our expectations in every way. We were so impressed by Urias’ work that we added additional electrical work in the kitchen and basement onto our contract. I had heard so many horror stories about remodeling projects that drastically exceeded the budget and schedule, so I was expecting some surprises. The only surprise was how great the final product was…both bathrooms exceeded our expectations in every way!"
Modern Kitchen Project
Farmhouse Kitchen Project
Contemporary Kitchen Project
Master Bathroom Project
Master Bathroom Project

+54

Recommended by92%of homeowners
Avatar for Mega Kitchen and Bath
Mega Kitchen and Bath
4.8(
196
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"After doing our homework, my wife and I selected Mega Kitchen and Bath for complete remodels of our master bath and hall full bath. We could not have made a better decision as the entire process was flawless. Katherine, a Certified Interior Decorator, was so patient and helpful with our selections. Felipe, the project manager, came by almost every day. Not that he needed to, because the installers (Johnny and Grover) were courteous and extremely hard working. The project was completed on schedule and the quality of the work was such that we did not have any punch lists items once the baths were completed. I would recommend Mega Kitchen and Bath in a heartbeat. You can’t go wrong."
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+106

Recommended by96%of homeowners
Renaissance Restoration Inc.
4.6(
107
)
Plumbing for a Remodel or Addition - Install

Serving Knoxville, MD and surrounding areas

In business since 1986

Free estimates

Credit card accepted

"I highly recommend Rene Lopez and Renaissance Restoration. They have completed a number of jobs at my house. The latest involved renovating a garden room, which included repairing and painting walls, hanging new doors, re-plumbing a sink, installing recessed lights, rebuilding an outdoor stoop, and lots more. Rene does any project I've asked him to do well, and always does a little extra to make it even better. He discusses options with me and offers what usually turn out to be great suggestions. He always responds promptly to phone, email, or text questions, and always shows up when he says he will. He and his crew are a pleasure to work with, and I would definitely hire them again without hesitation."
Recommended by96%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Knoxville, 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 Knoxville, 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.