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Find Plumbing installers for a remodel or addition in Seattle

Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
48
)

Serving Seattle, 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 Drain Pro Plumbing Inc
Drain Pro Plumbing Inc
4.9(
560
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Drain Pro plumbing installed a new Toto flush mount toilet for us which requires a bit more work and effort than standard toilet installations. The technician was extremely knowledgeable, professional, and friendly. They have done other projects for us in the past such as convert a single vanity in the master to a dual vanity and redo plumbing in the kitchen to accommodate our IKEA drawer. I would hire them again for any future projects."
Water service
Split water meter
Water meter installation
Water heater installation
Broken p-trap and pop assembly

+18

Response time1 day
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
5.0(
14
)

Serving Seattle, 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!!"
Additional Photos
Additional Photos
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Additional Photos
Additional Photos

+53

Recommended by100%of homeowners
Avatar for Northwest Hydrojetting, LLC
Northwest Hydrojetting, LLC
5.0(
13
)

Serving Seattle, 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
55 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Apollo Plumbing
Apollo Plumbing
4.7(
541
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2005

Emergency services offered

Credit card accepted

"The entire team at Apollo Plumbing was great to work with. They got me scheduled for the same day and I was notified when the technician was on his way. Mark did a thorough job inspecting my plumbing, explaining the issues and providing multiple solutions so that I could pick the right one for my family and budget. I could not be more impressed with the people and quality of service at Apollo Plumbing. I will definitely recommend them to all of my friends and family."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

10 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,291
)

Serving Seattle, 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
Additional Photos
Additional Photos
Electrical Panel Repair
Additional Photos

+44

92 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Paragon Construction, LLC
Paragon Construction, LLC
4.9(
24
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Jonathan and Robert installed trusses, roof framing and metal roofing on a shop for me. They are professional, hardworking and were willing to make right anything that needed it. I would use them again and recommend them to others."
Kitchen remodel
Finish
Kitchen remodel
Kitchen remodel
Kitchen remodel

+30

Response time3 hrs
8 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Cahill's Plumbing & Heating
Cahill's Plumbing & Heating
4.3(
35
)

Serving Seattle, WA and surrounding areas

Approved

Credit card accepted

Customers say: Quick response

"Work required a day and a half to complete.  Ran into problems changing out the fixtures.  soldering old copper can be a challenge. They did a very good job of opening the wall to access the plumbing.  It made my job of repairing the wall much easier. <br />"
Recommended by82%of homeowners
Avatar for Randklev Plumbing LLC
Randklev Plumbing LLC
4.9(
6
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Our family is very satisfied with Randklev Plumbing LLC service 👍. Will and his great team work really effectively, on time and take their highly responsibilty on their job. Last week our refrigerator pipe was broken issue with water leaked badly. They came and fixed very professionally . We recommend to y’all call them Randklev Plumbing LLC when needed. They have very good credit and clientele in town. Angela Ho "
Response time6 hrs
63 neighbors recently requested a quote
Recommended by16%of homeowners
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Showing 1-10 of 1023
FAQs for plumbing installation for a remodel or addition projects in Seattle, 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 Seattle, 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.