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Find Plumbing installers for a remodel or addition in Cos Cob

Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"It went very well. Spoke to them one evening and by the next morning, they were here to install the water heater. I appreciated the quick service."
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+6

Response time8 hrs
Response rate92%
2 neighbors recently requested a quote
Avatar for Mike's Plumbing Services
Mike's Plumbing Services
4.3(
205
)

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"I made the mistake of not negotiating a rate or price before getting the work done. As a result I paid $1450 for the installation of a $400 piece of hardware. I really liked the work that was done but for 2 hours of labor I expected more like $350, not $1450."
Boderus high efficiency gas boiler
Boiler
Gas boiler
Shower installation
A/C Install

+5

Response time2 days
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.5(
894
)

Serving Cos Cob, CT and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Hello, I just signed the contract with Sila Heating, Cooling and Plumbing on March 27, 2026. I hope everything goes well; I'll let you know at the end, once everything is installed. See you then!"
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+20

Response time9 hrs
16 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for First String Plumbing, Heating & Cooling
First String Plumbing, Heating & Cooling
5.0(
10
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

First String Plumbing, Heating & Cooling is built on over four decades of hands-on, master-level experience paired with modern equipment, straightforward pricing and a commitment to serving our neighbors near and far.\n\nWe believe every homeowner in Connecticut and New York deserves a team they can count on whenever they need help. When the lights are at their brightest and all eyes are on us, we will always do what is right and that commitment never fades.

Tankless Water Heater
Water Pipe Repair
Water Pipe Repair
Water Heater Install
20 neighbors recently requested a quote
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.6(
27
)

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."
Response time2 days
Response rate86%
18 neighbors recently requested a quote
Avatar for L.C. Schede & Sons, Inc.
L.C. Schede & Sons, Inc.
4.0(
293
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1922

Free estimates

Emergency services offered

"I selected Schede Plumbing for my conversion from an oil fired heating boiler to a gas boiler. My selection was based on known referrals in the Stamford, CT area from other well satisfied customers. I could not be more pleased, nor rate give enough praise and thanks to Lou Schede and his expert technicians. This was a major project for me and I was very anxious as to how the how conversion would take place. It would require draining the fuel tank, cutting it into manageable pieces and removing it from my basement. The idea of a gas conversion process was a bit scary to me but Lou Schede walked my through was would be involved, assessed what the heating requirement would be for my house, and selected a gas boiler which fit my needs perfectly. It was only two weeks from the time I first contacted Lou until the time the installation took place. My goodness, three Lou Schede trucks and four highly trained, professional and very polite technicians arrived at my house at 8:20 AM and by 3:00 PM my new gas boiler was installed, tested, and providing heat. Amazingly diligent workers worked very hard and did an beautiful installation. It was like a work of art in motion watching them work. The fuel tank was drained, cut up and removed. the oil fill pipes from outside to inside the basement were removed flush with both the interior and exterior walls and were cemented over. Beautiful, as if the pipes were never there. What also impressed me that whenever I had a question for Lou he was always there, immediately. No complicated voice menuing system. You want Lou, you call Lou, and you get Lou...immediately. This was very satisfying to me and he was a real pleasure to deal with. Absolutely top notch in every respect. The price for the installation was remarkably affordable....more that 6 to 8 thousand dollars less then competing firms. Incredible. He even cleaned the chimney, which was required by the city building code, applied for the permit at his expense. This was a thorough, comprehensive one shop job. Other firms required a separate electrician to hook up the thermostat, a separate firm to drain and remove the oil tank, and a separate firm to clean the chimney. Lou and his staff did it all!. One firm and he and his staff did it all. This is amazing. Lastly, he even accepted credit card for payment upon completion of the installation. I can go on and on. I have nothing but the best things to say about Schede Plumbing And Heating. They have my highest recommendation and are now my go to plumbing and HVAC company. Thanks Lou to you and your technicians for thoroughly well done job and an installation experience that was truly a pleasure."
 $100,000 Kitchen
Master Bath/Spa
Children's Bath
Guest Bath
Response time6 hrs
18 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for MVP Plumbing and Heating, LLC
MVP Plumbing and Heating, LLC
4.7(
18
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Matt was quick to respond to my enquiry. Prompt for the appointment and did excellent work. He was very helpful with other plumbing questions and issues I had around the house. I've had him back to install a waste disposal, an outside faucet and change two sinks in the master. Highly recommend."
Faucet
Modern Powder room
Wall mount faucet
Navien Combi
Old boiler

+1

Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Comfort Masters
Comfort Masters
4.5(
134
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"He noticed the mistakes that the last contractor did, he's professional, clean, he has several license in plumbing and heating, I can't recommend him more highly, top notch, his pricing was fair, left the place clean, did the work well, on time and I will use him again. He's my go to man for plumbing and heating now."
Beautiful shower upgrade
Rain Shower
Soaking Tub
Shower Upgrade
Shower Updgrade

+7

Response time6 hrs
6 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for BHI Builder & Home Improvement LLC
BHI Builder & Home Improvement LLC
5.0(
1
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

Builder Home Improvement LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 20 years of accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time1 day
Response rate100%
Recommended by100%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Cos Cob, CT

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 Cos Cob, CT 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.