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

Avatar for MAPLEWOOD PLUMBING
MAPLEWOOD PLUMBING
4.8(
337
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Maplewood Plumbing was the 2nd company I called to replace a garbage disposal after the first company was blatantly trying to rip me off. The plumber they sent was on time, friendly, honest (he didn't try to upsell me models) and was less than a third the price of the 1st company I had called. Thankful for a company I can trust, I will absolutely use them again in the future!"
Additional Photos
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+7

1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Mr. Rooter Plumbing of St. Louis
Mr. Rooter Plumbing of St. Louis
4.2(
351
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I used Mr. Rooter to help me retro fit the existing plumbing for my shower after installing a new tile shower in the master bathroom. They came out quickly, fixed the plumbing in under 2 hours, and installed the new shower head for me. They were professional, on-time, and did a great job."
Mr Rooter Neighborly Hub for Home Services
Courteous, Uniformed Professionals.
Keep your home clean with mats and shoe covers.
Provide a price before we start.
Revolutionary Drain Cleaning Services

+7

Response time1 day
102 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Mayo Plumbing Co
Mayo Plumbing Co
4.8(
481
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"John has been our go-to guy for several years now. We live in an early 70s home, and as with all older homes there are repairs that are needed fairly often. From the first time he worked for us, identifying that a leak originated from a roof vent that had been knocked slightly askew in a storm and rain water had gradually seeped down the pipes and terminated above our kitchen cabinets, he has always been prompt, courteous, professional in every way, and just an all around nice guy to work with. And the pricing has always been fair. Since then he has installed a number of appliances and fixed sundry leaks for us. Can't recommend him or his company enough. Give them a try."
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+3

Recommended by96%of homeowners
Avatar for J & E Plumbing
J & E Plumbing
4.2(
166
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 1974

Emergency services offered

Credit card accepted

"They had a big plumbing emergency and canceled the first appointment. I had to call them to reschedule but they did arrive on time and did a good job. We had a couple of additional problems crop up which made our project take longer. The drain size didn't match and the Moen roman tub spout was damaged out of the box. None of that was their fault. I would use them again."
Recommended by81%of homeowners
Avatar for ALLN1 Plumbing & Construction Co
ALLN1 Plumbing & Construction Co
4.8(
46
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Alln1 plumbing did an excellent job. They were knowledgeable, polite, efficient and effective. I work from home and they took care to make sure I could work and feel comfortable with them working throughout my home. I highly recommend this team of plumbing professionals."
Bathroom Renovation
Bathroom Renovation for Mr and Mrs Fields
Before
Plumbing Project
Bathroom renovation

+39

Recommended by95%of homeowners
Avatar for The Tub Company
The Tub Company
4.6(
129
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 1986

Credit card accepted

"WOW!!! I am astonished. My realtor told me the blue tub had to go. I got in touch with The Tub Co. told them my situation, they were out here in less than 24 hours making it happen. I needed it that quick, but never dreamed it would happen or turn out like it did. It literally looks like a brand new white tub. Our house is going to slow so well. Thank you so much. I appreciate it. You made the last piece so easy for me. Very professional and what a great job. In and out and no more dated blue. Wish I would have done it sooner. Especially for that price."
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Recommended by96%of homeowners
Avatar for Contemporary Refinishing
Contemporary Refinishing
4.8(
134
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 1996

Free estimates

Credit card accepted

"

James arrived on time and ready to work.  He came in and told me exactly what he was going to do.  He cleaned out the tub and then put in some kind of cleaner and then taped up the bathroom including enclosing the door with a zipper so he could run a vacuum out the window for exhaust. He took his time and was a very pleasant man to work with.  He explained everything he was doing and wanted to know if I had any questions.  It took about 5 hours but he left with it very clean and beautiful.  The bathroom looks so nice we had to go out and buy all new plumbing because the old just did not look good. I would recommend this company (James) to anyone who needs work on their bathroom.  They do a great job and it was well worth the money.




"
Bathroom
Bathroom
Kitchen
Recommended by96%of homeowners
Avatar for Honey Do's Solutions LLC
Honey Do's Solutions LLC
4.6(
219
)
Plumbing for a Remodel or Addition - Install

Serving University City, MO and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"I am extremely pleased with the job completed by Jason and his team. This team is professional and very attuned to detail. There were a few things, not related to the kitchen, that came up during the project, which I asked the team to address. They handled them and still were able to work on the kitchen project. The team worked up until they had to wait on the counter top installation; then, returned and finished the job. The job was started on 5/20/19 and was finished on 6/21/19. I highly recommend Honey Do's Solutions, which I have used for other projects."
Old kitchen (Before photo)
Kitchen remodel
Awesome granite
New dream kitchen
Kitchen remodel

+43

Recommended by93%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in University City, MO

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 University City, MO 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.