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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
1 neighbors recently requested a quote
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

"Very well done! Tennant called to notify us of a leaking garbage disposal unit. Received a phone call when technician (Raman) arrived with a clear diagnosis before work was to be completed. Used an Angie's list special that was honored with no up-charges or additional work added. Drain Pro is now my go-to for all plumbing needs."
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(
1,391
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 2013

Emergency services offered

Warranties offered

"Lead plumber Mitchell, did great service with even better follow up. As with a lot of services, it comes down to the actual person with which you interact. Mitchell handled a drywall repair issue related to the installation by taking personal responsibility and action to cover the cost himself. Seatown plumbing manager initially said they were not covering the repair, but after speaking with Mitchell this morning confirmed that Seatown will reimburse him for the cost of repair. Mitchell exhibited a high level of competency in his work, and an equally high level of character."
Generator Repair
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Electrical Panel Repair
Additional Photos

+44

88 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 was contacted by Northwest Hydrojetting, LLC immediately after my request for a water heater replacement on Angie's list. They supplied a base quote and said they could complete by next day. The quote was reasonable and after I checked a few other responses, I checked back and they said they could actually get out the same day. They were quick, responsive, polite and very professional. As a recently retired Facilities Superintendent I would recommend this company to my business colleagues as well as private home owners."
Camera inspection
Camera inspection
Repairs
Remodels
Remodels

+11

Response time4 hrs
56 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Pace Plumbing
Pace Plumbing
4.7(
15
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"I highly recommend Pace Plumbing. 3 years ago they installed a new bathroom for me in an unfinished basement. Work is superior. Since then I have used them for several rentals and for other issues at my home. I am impressed beyond words and I highly recommend them. They are on time! they communicate and they are highly skilled plumbers. Great company to work with."
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+12

Recommended by84%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

"These guys were amazing! We had the plastic water intake valve behind the toilet burst and spray water everywhere at 4am. after cleaning up the mess we called Cahill's at about 6:45am and they arrived by 8:30am to fix the valve, which took them like 15 minutes. I asked them about doing all of the valves in the house (16 total) and they agreed to come back at noon to do all of them. At exactly noon they were back at my house and had all the valves changed out in less than 2 hours. They were friendly, clean, polite, and provided excellent customer service. Jason and Harry were the team that came to my house and I would highly recommend them. And thanks to Russell, the owner, for giving us a great deal on the work his team did. We will be calling on Cahill's for any future plumbing needs."
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.

3 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!"
Additional Photos
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

"One could not ask for much more with Vlad from AWP. He was willing to take the time to discuss what he was doing and explain options. His work is very neat and precise and he maintained a very clean work environment. As someone who does most of their own work, I can assure you that I will utilize AWP for all my plumbing needs in the future."
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+24

Recommended by100%of homeowners
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Showing 1-10 of 188
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.