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

Avatar for Douglas & Son Services
Douglas & Son Services
4.6(
24
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, 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."
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+6

Response time11 hrs
Response rate100%
1 neighbors recently requested a quote
F.H. Furr Plumbing Heating & Air Conditioning Inc
4.0(
25
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, 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 Excellent Plumbing
Excellent Plumbing
4.7(
179
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, MD and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"We had a hot water installed yesterday. Excellent Plumbing LLC does great work. Mike was very responsive to all of our needs. We now have a very high quality hot water heat with an extended warranty. I will hire this company again."
Recommended by92%of homeowners
CHEROKEE PLUMBING INC
5.0(
27
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, MD and surrounding areas

In business since 1992

Free estimates

"Greg arrived within the time window originally communicated. Upon arrival he introduced himself. He was able to quickly identify the problem and then fix it. He had all required tools, ladder and pipe on his truck. He was very kind, friendly and professional. He showed us the faulty pipe, cleaned the area up and the cost was inline with our expectations. A very positive experience."
Recommended by100%of homeowners
Avatar for Professional lawns
Professional lawns
5.0(
20
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, MD and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Mr. Morgan was extremely professional. He responded immediately, came out immediately and walked me through the whole process. Their prices were fair and he was extremely efficient. I would definitely call them again for any of my plumbing needs."
Fusion Car Wash
back of the hotel shows the qty of rooms
Main Street view of the hotel.
George Washington University Hospital
Fusion Car Wash

+26

Recommended by100%of homeowners
Avatar for Miracle Method
Miracle Method
4.5(
174
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, MD and surrounding areas

In business since 1979

Free estimates

Credit card accepted

"I would recommend this company for doing resurfacing. I was particularly pleased with the results on wall tiles around our bathtub that would have otherwise have been very costly to remove and replace. The company was very responsive.
"
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+20

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

Serving Monrovia, MD and surrounding areas

In business since 1961

Free estimates

Credit card accepted

"Charlie was easy to deal with. Work started right away (by putting down drop cloths) and was finished in under 3 hours. The bathtub looks like new. The guy who came was professional. They came back later after everything was dry and put our tub/shower door back on."
Recommended by98%of homeowners
Avatar for BLACK & WHITE KITCHEN AND BATH
BLACK & WHITE KITCHEN AND BATH
5.0(
23
)
Plumbing for a Remodel or Addition - Install

Serving Monrovia, MD and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"I just wanted to write a note to say how very pleased we are with our remodeled master bathroom completed by Black and White Kitchen and Bath. David the project manager and his work crew were very professional and accommodated all our needs. They went above and beyond to insure we were pleased with every aspect of the project. I would highly recommend Black and White for any kitchen or bathroom remodeling project. -Leonard S Silver Spring, MD"
Kitchen remodel
Bathroom
Bathroom Remodel
Master Bathroom
Basement

+112

Recommended by100%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Monrovia, 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 Monrovia, 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.