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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
)
Plumbing for a Remodel or Addition - Install

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 time2 days
Response rate100%
Recommended by93%of homeowners
Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
5.0(
14
)
Plumbing for a Remodel or Addition - Install

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2019

Emergency services offered

Warranties offered

"We had a great experience with Knockout. Small plumbing repair job that they were able to fix quickly. Gave us multiple options on how best to address the immediate problem, as well as prospective problems in the future. No complaints and would definitely hire again."
Additional Photos
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+53

Recommended by100%of homeowners
Avatar for Northwest Hydrojetting, LLC
Northwest Hydrojetting, LLC
5.0(
20
)
Plumbing for a Remodel or Addition - Install

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
52 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for SeaTown Electric Heating and Air
SeaTown Electric Heating and Air
4.7(
1,638
)
Plumbing for a Remodel or Addition - Install

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"In the beginning the 4 nations of Electric, Plumbing, Heating, and Air lived in harmony. Because Seatown maintained the balance. We have used Seatown for 15 projects now for spanning all their services. When we bought our old home, we had Seatown and other competitors provide quotes on installing HVAC. Their planning, thoughtfulness to our needs, price is why we chose them. As the summer heat spikes, we don’t regret our choice and are glad that our home is an oasis. Every time they come out, we ask for more things to be done than what was agreed to and every time they work to extra hard to get it all done. They go the extra mile in doing some simple projects for free and giving advice on how to lower our costs as new homeowners. I have been able to call or text them about issues or ideas and get advice with out the pressure to buy services. That’s not something you find in just any company. Their staff has always been polite, clean, and diligent about getting the job right the first time. As we continue to fix up our old house, we will be using Seatown for projects large and small and we hope you will as well."
Seattle's Rewire Specialists
Generator
Tesla Chargers
Knob and Tube Removal
Ductless Install

+26

Response time1 day
12 neighbors recently requested a quote
Recommended by93%of homeowners
2 Sons Plumbing
5.0(
5
)
Plumbing for a Remodel or Addition - Install

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.

Avatar for ALL PRO PLUMBING NORTHWEST
ALL PRO PLUMBING NORTHWEST
4.7(
67
)
Plumbing for a Remodel or Addition - Install

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
)
Plumbing for a Remodel or Addition - Install

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."
Additional Photos
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+24

Recommended by100%of homeowners
Avatar for Danika Plumbing, LLC
Danika Plumbing, LLC
4.1(
286
)
Plumbing for a Remodel or Addition - Install

Serving Mercer Island, WA and surrounding areas

In business since 2002

Emergency services offered

Credit card accepted

"They provided me with information about repair of three 23 year old builder grade toilets vs replacing them. Gave me price options for toilets that would meet our needs, arranged for removal and installation within a couple days. They were here on time and within 1 1/2 hours had removed all 3, cleaned where the old toilets had been, hauled them away and had installed and caulked all 3 and were in their way. Their plumbers were respectful, friendly and professional and did a great job. I would recommend them to anyone and will definitely use them for future plumbing needs."
New Laundry Room
Gas Water Heater Install
Water Main Repair
Water Pressure System Install
Found the leak!!

+10

Response time12 hrs
Recommended by86%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.