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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

"Absolute best. I had three bids. One was way over the top. The other bid was slightly lower than the one from Maplewood Plumbing, but they stopped responding to my questions after I asked them two times. I understand that if it was just a $200 job, then it would not be worth the time, but $2,500 was no chump change. Couldn't I ask just a couple more questions to make sure I knew what I was getting into? Maplewood plumbing was different, from start to finish. They even came out a second time to take a closer look to reassure me on what needed to be moved or removed first in order to start their work. I doubt many companies would want to do that. The plumbers working on the job were happy to answer questions as well. There was a small drip in the water supply line/shutoff valve area of the toilet after they were done with the job, They fixed it after a call. Some companies just leave these loose ends unfixed, but they didn't. The office staff was also responsive and professional. All in all, they were such a pleasure to work with. Will definitely hire them for future plumbing needs."
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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

"Garrett Korn was my installer from Mr. Rooter. I was informed prior to his arrival that he was on his way and he arrived shortly after 8:00 for an 8 - 10 AM window. He quickly analyzed our plumbing problem, gave us a quote right away (which I agreed to) and then left to get all the parts he needed. He was only gone for a short period of time, did all the work, and was totally completed before 10:00 AM. The quality of the work was very good and now we are up and running again. I would highly recommend Mr. Rooter and selfishly ask for Garrett. He is easy to work with and very competent."
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

"Great! I called Mayo as a new customer (my former plumber had retired). John called me after office hours from his cell phone before he had even returned to his office and had a chance to review my request; we discussed my situation and he said he would work me into his schedule. They kept in touch and updated expected arrival time. When John arrived, he was very personable, professional and efficient; he even leak-checked fittings for furnace and water heater, in addition to the new fitting he installed for the dryer. I like small family-owned businesses and would hire them again in a minute!"
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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

"This was an Angie's list Big Deal - 2 hours plumbing labor for $99.  One of my hose faucets froze during the winter rupturing a pipe in my basement.  I thought this deal would be a good opportunity to get it fixed at a reasonable price.  And it turned out great.  The contractor called soon after my purchase and made an appointment.  The plumber was prompt for the appointment and had the faucet and pipe fixed within the 2 hour window.
"
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

"Smooth as could be from call to completion.  For $279 (Angie's List deal) they came in and reglazed our nasty old tub to a sparkling white new finish.  It was fast, too. Our old tub had been flaking and chipping - it looks BRAND NEW.  The one note of caution that I would say is the smell is AWFUL.  Thankfully, we have an attic fan and a bathroom fan.  It took about 2-3 days before going into the bathroom didn't knock you out. :)  The installer cautioned not to use bathmats on the tub anymore, since they could suction up the coating I guess.  There are options for non-slip aids though.
"
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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 was punctual, extremely fastidious, kept me informed of progress, did a beautiful job of re-glazing and re-caulking and cleaned up without any residual mess. He explained and gave me written instructions for care of the new surface. I will ask specifically for him when reglazing of another bathtub."
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.