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Find Plumbing installers for a remodel or addition in Mercer Island

Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
50
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Schmitty's Plumbing responded to my Angi's service request almost as soon as I submitted it, and they beat out three other Angi plumbing companies in terms of pricing and transparency. I hired Schmitty's to remove an old double bowl kitchen sink and faucet with a new single bowl sink and upgraded faucet. There was no upselling or attempts to convince us to replace our garbage disposal which two of the other plumbers recommended we do. We saw no reason to replace our disposal which functions well and is not that old. Partners Drake and Gage came out to our home as scheduled, and they got to work immediately working efficiently and thoroughly. We appreciated their no-nonsense, honest, prompt service, and very fair pricing. I chose Schmitty's based on the positive customer reviews, and would hire them again. I told them I would recommend them to all my friends who have plumbing needs!"
Response time1 day
Recommended by93%of homeowners
Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
5.0(
14
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2019

Emergency services offered

Warranties offered

"Zach and his crew were amazing! Our old water heater sprung a massive leak at 2:00am on a Saturday morning. Contacted Zach at 7:30am and he called right back and was here within the hour. Not only did we replace our water heater with a tankless model, but also moved it from the second floor to garage. Zach did all of this on a Saturday for a flat fee!! He and his crew were here for 9 hours without complaint or even seeming to take a rest!! Knockout Plumbing is indeed a 'Knockout' and I would highly recommend!! Kudos to all!!"
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+53

Recommended by100%of homeowners
Avatar for Drain Pro Plumbing Inc
Drain Pro Plumbing Inc
4.8(
603
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"The need for a footing drain was a surprise to me during my basement remodel due to water leaking in through the blocks. Raman and his team got me on the schedule fairly quickly, did a great job. They also set up new plumbing for 2 bathrooms and a kitchen in the basement, and removed my old water heater and installed a tankless water heater. Any issues that came up, they were very quick to resolve (including an old copper pipe that they didn't install which welding came loose, and they were there same day to fix.) great honest service, reliable service. Pricing, well, plumbing is not cheap, but I think they are comparable to anyone in the business. I would definitely use them again. Thanks Drain Pro!"
Water service
Split water meter
Water meter installation
Water heater installation
Broken p-trap and pop assembly

+18

Response time1 day
Recommended by97%of homeowners
Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,392
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 2013

Emergency services offered

Warranties offered

"We requested a bid for installation of recessed kitchen lighting. What we got was an estimate for the cost of rewiring the knob-and-tube in our entire house, plus the cost of the fixtures. The rewiring alone was estimated over $18,000. Our home inspector informed us about knob-and-tube when we moved in, as well as the excellent condition of the wiring. Adding LED fixtures would have been a low draw on the system and we have since gotten a far better bid from another electrician. Our impression was that we were given a hard sell to spend almost $20,000 on a big project we did not ask for. There was no alternative solution offered. Additionally, the price quoted for the fixtures was very higher, higher than any I could find on a basic Internet search for the same fixtures, so big price gouging there on the materials. I am confident that these are skilled electricians, but as a homeowner and consumer, I felt that we were not heard and that the company, as represented by the initial contact with the lead electrician who seems to primarily be a salesman, is interested only in big-ticket jobs. If you need a big commercial project done, you may find Seatown to be your best choice. As a homeowner, I felt like the company's next prospective sale. We won't hire this company."
Generator Repair
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Electrical Panel Repair
Additional Photos

+44

105 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Northwest Hydrojetting, LLC
Northwest Hydrojetting, LLC
5.0(
14
)

Serving Mercer Island, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"I have used this plumber for over 4 years now - they respond immediately to any concern, are the most honest and fair people out there! Anything from simple drain clear, or water heater install, to a side sewer and complete DADU plumbing installation…they do it all, and with great communication! I pass their name and number to anyone who is looking for an honest and reliable plumber!"
Camera inspection
Camera inspection
Repairs
Remodels
Remodels

+11

Response time4 hrs
43 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Cahill's Plumbing & Heating
Cahill's Plumbing & Heating
4.1(
38
)

Serving Mercer Island, WA and surrounding areas

Approved

Credit card accepted

Customers say: Super punctual

"Jason and Henry crawled  through a very unpleasant 3' space between our first and second floor to find out that there was a double ptrap install and the vent line just venting into open space. They corrected the plumbing, installed a studer cap and brought everything upto code (fixing the bad smell) problem.

I really appreciate there willingness to belly craw into a tight space to solve the problem without having to cut a hole in the celling.

They came in just under what they estimated it to cost. Showed up promptly and were professional. This is the second time I have used Cahill's Plumbing and have always had a good experience.
"
Recommended by82%of homeowners
2 Sons Plumbing
5.0(
5
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 2017

Credit card accepted

Offers commercial services

2 Sons Plumbing is a full-service plumbing and sewer company serving the greater Seattle area. Known for reliable service, honest recommendations, and quality workmanship, our team handles everything from everyday plumbing repairs to complex sewer solutions—helping homeowners keep their systems running smoothly year-round.

10 neighbors recently requested a quote
Avatar for ALL PRO PLUMBING NORTHWEST
ALL PRO PLUMBING NORTHWEST
4.7(
67
)

Serving Mercer Island, WA and surrounding areas

In business since 1994

Emergency services offered

Warranties offered

"This is the only plumber we ever use--and we have issues with our elderly plumbing system several times a year. Reasonable rates and no nonsense. Noel is a down to earth guy who really knows his stuff. Call nobody else. Seriously, if we ever move out of this area, we plan to take him with us!"
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Response time1 day
Recommended by96%of homeowners
Avatar for All Water Plumbing LLC
All Water Plumbing LLC
5.0(
12
)

Serving Mercer Island, WA and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"Vlad was very prompt, respectful, yet personable and more than sincere in his motivation to assist with my plumbing problem. After replacing the pipes, the sink was still backing up, so he ran a snake through it a handful of times, but to no avail. He had come to the conclusion that it may be backed up much further down, and that was out of his scope of work, and with regret, he recommended other companies that would be able to assist. About 30 minutes after he left, he called me back and explained how awful he felt about not being able resolve my original issue. He informed me that he would like to make one more attempt (this was after I had already paid him the full amount), and that he was going to Home Depot to purchase a more effective tool, and said that he would be willing to go into the crawl space if it came to that. He arrived back at my house shortly after and went right back to trying to break up whatever was clogging the drains. After 4 attempts, it finally worked! The relief and the gratitude I felt was enormous! Vlad did not request any money after coming back the second time, and I think he was as happy as I was to have it working! I can't thank Vlad enough for going the extra mile, being so loyal to his work ethic, and putting his other priorities on hold to complete a job he could have easily walked away from after being paid. Thank you Vlad, and I will be calling you for all of my plumbing needs!"
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+24

Recommended by100%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Mercer Island, WA

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 Mercer Island, WA 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.