Remodels & re-pipe

Remodel plumbing & whole-home re-pipes, from planning to final inspection

Same-day appointments · ★★★★★ 5-Star Google Reviews
Licensed • Bonded • Insured • Residential & Commercial

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Expert Plumbing for Remodels & Whole Home Re-Piping in Seattle

Whether you’re updating a bathroom, building an ADU, or re-piping an entire home, Knockout Plumbing delivers code-compliant plumbing with precision and care. Our Seattle-based team specializes in residential remodels and full-system upgrades, ensuring your water and waste lines are ready for inspections and built to last. We collaborate with homeowners and contractors to install or relocate water, drain, and vent lines efficiently—on time and within budget. From rough-in to finish work, we make sure your remodel goes smoothly from start to finish.

We also provide whole-home re-piping services for older properties with outdated or damaged plumbing. If you’re experiencing low water pressure, rusty water, or leaks, our team will assess the situation and replace your existing pipes with modern PEX or copper piping, improving flow and reliability throughout the house.

OUR REMODELING SERVICES INCLUDE:

✅ Kitchen Remodel Plumbing
✅ Bathroom Remodel Plumbing
✅ Laundry Room Additions
✅ ADU & DADU Rough-Ins
✅ Full Home Re-Pipes
✅ Fixture Relocation
✅ Water & Waste Line Re-Routes
✅ Valve Replacements

💡 WHY CHOOSE KNOCKOUT FOR REMODELS?

We’ve earned a reputation across the Seattle area for remodel work done right. Knockout’s team communicates clearly with both homeowners and contractors to keep projects running smoothly. We prioritize fair pricing, clean installs, and plumbing that’s ready for inspection on the first go. When you work with us, there are no surprises—just solid plumbing.

Our Seattle-based team specializes in residential remodeling and full home re-piping projects. Whether you’re renovating a bathroom, building an ADU, or upgrading outdated plumbing throughout the home, we deliver code-compliant plumbing with precision and care. We collaborate closely with homeowners and contractors to ensure timelines are met and every detail passes inspection the first time.

We bring years of experience to remodel and re-pipe work, offering transparency, efficiency, and high-quality results you can rely on from start to finish.

FAQ – REMODELING & RE-PIPE PLUMBING

How do I know if I need to re-pipe my home?
Signs like rusty water, low water pressure, frequent leaks, or visible corrosion may indicate aging pipes that need replacing. Our team can inspect your system and help you decide if a re-pipe is the right solution.

What’s the difference between a remodel and a re-pipe?
A remodel involves updating the plumbing layout or fixtures in specific rooms (like a kitchen or bathroom), while a re-pipe replaces all or most of the piping in the home for long-term reliability and better performance.

Can you work with my contractor during a remodel?
Absolutely. We frequently collaborate with general contractors and builders to coordinate plumbing rough-ins, inspections, and final trim-outs as part of larger renovation projects.

How long does a full home re-pipe take?
It depends on the size and complexity of the house, but most re-piping projects take 3–7 days. We’ll provide a clear schedule before work begins.

Do you offer copper and PEX piping?
Yes—we install both copper and PEX, depending on your home’s needs and your preferences. We’ll walk you through the pros and cons of each material.

👉 Planning a remodel or re-pipe? Get your plumbing reconfigured the right way—with Knockout Plumbing & Mechanical.
📞 Call (206) 858-2211 or reach out here to schedule your quote.

    
 
 
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    Justin Gerardy 
 
 
 
 Trustindex verifies that the original source of the review is Google. As a restaurant owner in Seattle, I tend to find it infuriating when tradespeople over charge. It’s a real problem in this city. Knockout was fair and fast. Can’t say how much I appreciate it. I’ll be back for sure.
  
 
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    Margot Potts 
 
 
 
 Trustindex verifies that the original source of the review is Google. Zack and his crew were able to come within a couple days of calling and resolved my issue within minutes. They were very friendly and generous - highly recommend!
  
 
      Posted on Google  
    Veronica Seifner 
 
 
 
 Trustindex verifies that the original source of the review is Google. Knockout was great to work with - very courteous, responsive, and fair pricing. Zach came out to cap off a gas line for an appliance we switched to electric. The option was to do it from the inside or from the outside and remove the dedicated pipe altogether. Zach gave reasonable pricing (checked with two other companies) and was able to get the job done right away with expertise and professionalism. Knockout will be our top-choice, first-call for any future pluming needs in our home.
  
 
      Posted on Google  
    Mindy Martin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent experience. I was considering replacing my water heater back in the spring and Knockout was one of the companies I shortlisted to talk to. Ultimately I decided to wait on replacement, but Knockout was definitely at the top of my list. When my water heater started leaking the other day, I immediately reached out to Knockout, and they were able to get me scheduled the next day! I was given the choice between Bradford White and AOS. Zach came out and did a fantastic job. Friendly but professional; quick and efficient but thorough. Knockout respected the quote I was given a few months back which was very competitive. I strongly recommend this company!
  
 
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    rozap _ 
 
 
 
 Trustindex verifies that the original source of the review is Google. I asked these guys about hydrojetting our old sewer line that would occasionally get clogged. Zach showed up and looked at the situation, and after chatting for a bit he figured I could DIY it so I would know how to do it rather than paying every time it happeened. So he showed me a fitting for my pressure washer I could get, and described what to do. I did all that and it worked great, and I saved $850 that it would have cost, and then I knew how to do it going forward. They didn't even charge me. They're super honest guys with a lot of integrity. Definitely recommend them.
  
 
      Posted on Google  
    Jason Franklin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Colin and his team have completed 2 projects for us and is always very helpful and informative in his diagnosis and explaining his course of action. I highly recommend him and Knock out Plumbing for all your plumbing needs.
  
 
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    Michael Johnson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Zach has done a number of plumbing jobs for us over the years ranging from large bathroom additions to smaller repairs, every time they've been top quality. I highly recommend Knockout!
  
 
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    Simone 
 
 
 
 Trustindex verifies that the original source of the review is Google. Zach is a consummate professional. He was thorough, timely, efficient, personable, and diligent. He returned the next day after the job to place a cover on a part, which is something my partner & I wouldn’t have known. Clearly, he has integrity, which in my book is paramount. We emphatically would not recommend anyone else, but him and his team for plumbing jobs. We were beyond pleased with Zach’s skill and caliber. 20/10 ⭐️
  
 
      Posted on Google  
    Evan Wiederspan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Zack and his crew replaced my kitchen sink drain after it started leaking. I was really happy with the price, and the speed and quality of their work. It was also easy to get a quote and schedule over the phone. I would definitely hire Knockout Plumbing again in the future!