Full Home Re-Pipes in Seattle

Trusted Galvanized Pipe Replacement & Whole-Home Re-Piping for Seattle Homes

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

Call us now for any and all plumbing needs!

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OLD PIPES CAUSING PROBLEMS?

Low pressure, rusty water and repeat leaks usually mean it’s time to re-pipe. We replace old galvanized, poly and failing pipes with durable new lines.

Whole-home PEX or copper re-pipes
Minimal wall openings
Permits handled
Clear, upfront quote before we start
Licensed, bonded & insured

Prefer to talk? Call or text (206) 858-2211

Expert Plumbing for re-piping your home

Old or corroded plumbing can lead to leaks, poor water pressure, and long-term damage to your property. At Knockout Plumbing & Mechanical, we specialize in full home re-piping services that restore your plumbing system’s performance, safety, and reliability—whether you’re dealing with outdated galvanized pipes, low water pressure, or chronic leak issues.

We serve homeowners throughout Seattle including Beacon Hill, Ballard, Queen Anne, Fremont, Green Lake, West Seattle, Capitol Hill, Shoreline, and Lake Cit with expert workmanship, clear communication, and fair pricing.

Common Signs You Need a Whole-Home Re-Pipe

• Low water pressure
• Rusty or discolored water
• Old galvanized or polybutylene pipes
• Frequent leaks
• Temperature fluctuations when using water
• Corrosion around exposed pipes
• Water hammer or banging noises in the walls

✅ Our Full Home Re-Piping Services Include:

Replacing old galvanized, polybutylene, or copper piping
Whole-house cold and hot water line replacement
Re-piping for multi-story homes and additions
Upgrading plumbing systems to meet current code
Installation of new shut-off valves and hose bibs
Minimally invasive wall, floor, and ceiling access
Coordination with city inspection requirements
Cleanup and restoration following pipe installation

Frequently Asked Questions

How long does a full home re-pipe take?
Most single-family homes can be re-piped in 2 to 5 days, depending on the size and complexity of the layout.

Will I have to leave my home during the re-pipe?
Not usually. We work in sections and keep essential plumbing services available when possible, so you can remain in your home throughout the project.

What materials do you use?
We primarily use PEX or copper piping, depending on your home’s needs, local codes, and your preferences.

Does this come with a warranty?
Yes! We stand behind our work with warranties on both labor and materials. Ask us about specific terms for your project.

Do I need permits for a whole-house re-pipe?
Yes, and we’ll take care of pulling any necessary permits and coordinating inspections with the city of Seattle or your local municipality.

Ready for a Fresh Start?

If you’re tired of low water pressure, rusty water, or constant leaks—let’s get your plumbing system back on track.
📞 Call (206) 858-2211 or request a quote online and ask about full home re-piping options.

Related Services

• Water Service Line Replacement
• Sewer Line Repair & Replacement
• Water & Drain Line Re-Routes
• Emergency Leak Detection

    
 
 
       Posted on Google  
    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.
  
 
      Posted on Google  
    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!
  
 
      Posted on Google  
    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.
  
 
      Posted on Google  
    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!
  
 
      Posted on Google  
    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!