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Knockout Plumbing & Repipe Inc.

Plumbers in San Jose, California
Ranked #4 in San Jose | Grade B+
4.90 (322 reviews)

Knockout Plumbing & Repipe Inc.

Plumbing contractor focused on repipes, drains, and sewer solutions for single-family and multifamily properties. Known for responsive estimates, clear communication, and organized project delivery Serving homeowners across San Jose, California.

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Why Homeowners Choose This Business

Homeowners mention prompt responses, clear explanations, and crews that maintain a clean workspace. For larger projects, customers describe organized coordination, realistic timelines, and follow-through to completion Local experience that helps homeowners across San Jose, California compare a more region-aware provider.

Service Area

Based in Campbell and serving San Jose, California and surrounding South Bay communities.

Local Pro Business

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Listing details

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  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Plumbing Services
  Supplier
  Repiping
  Water Heater Services
  Copper Repipe
  Sewer Services
  Drain Cleaning
  Fixture Installation
  Sewer line replacement
  Maintenance
  Waste Line Replacement
  Installations
  Main Water Shutoff
  Pressure Reducing Valve
  Repairs
  Multifamily Plumbing
  Under-Slab Piping
  Leak Detection
  Plumbing Repair
  Pipe Replacement

Services include whole-home and multifamily repiping (copper and related solutions), drain cleaning and clog removal, sewer line repair and replacement, waste line replacement under homes, water service and shutoff valve work, and general plumbing repairs.

Reviews

Customer Reviews

Theresa Paloma
Our master bath tub was not draining and nothing seemed to help unclog it. We were referred to Knockout plumbing and they were immediately responsive. Martin came to the house, gave us a quote and his crew was available to do the job on the…
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Our master bath tub was not draining and nothing seemed to help unclog it. We were referred to Knockout plumbing and they were immediately responsive. Martin came to the house, gave us a quote and his crew was available to do the job on the same day! They were professional, courteous and got the job done quickly. One of the most impressive things they did was to wear shoe covers while in our house to minimize any dirt and debris. After, they collected all their trash and hauled it away.
There was an issue after the job was complete and Martin was immediately available to assist us. He was able to provide a solution and send his crew to resolve it. Overall, they provided excellent customer service and focused on quality to get the job done right. Definitely highly recommended for plumbing needs and would use them again.
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Jason and his team worker came to have the free estimate for my crawl basement issues is rainwater seepage . He is professional, easy to communicate with. Best thing is Jason aimed for the root cause, not just the symptoms of current issues…
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Jason and his team worker came to have the free estimate for my crawl basement issues is rainwater seepage . He is professional, easy to communicate with. Best thing is Jason aimed for the root cause, not just the symptoms of current issues having a sincere and patient attitude. Thank you!
Susan Kontich
Knockout did an excellent job for us and I highly recommend them. We started our journey with an estimate to replace all the vertical and horizontal waste water pipes under our home. Our house is 70 years old and we noticed cast iron pipes…
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Knockout did an excellent job for us and I highly recommend them. We started our journey with an estimate to replace all the vertical and horizontal waste water pipes under our home. Our house is 70 years old and we noticed cast iron pipes that seem to be deteriorating. We looked it up and their life rage is about 70 years so we bit the bullet and got estimates from 4 different companies. They all seemed good but Knockout offered some things the others did not. They offered a 25 year transferable warranty, they acquired and arranged for permits. They also put back the dry wall that they had to removed to do the job. The man that did the texturing did a great job. He matched the 70 year old texturing style that was in our family room. I was truly amazed. This sewer pipe replacement, grew to include all the water pipes, and then to replace the sewer line from the house to the street and unknown to use we had a second line that was leaking under our garage floor. This turned into a really really big job. It could have been a nightmare but it was not. Martin, Axil and the rest of the crew totally took care of us and our house. Every day I would receive an email telling me when they would be there to work or when an inspection was happening. They were the most cautious and careful of our house. They protected my floors, and carpet and walls. THEY NEVER LEFT A MESS EVER.
I watched them clean, sweep and scrub down our driveway when they had used it as a work space. They were absolutely incredible. Clean, neat, work that was approved by the city and sewer department and great communication with us the entire time. I HIGHLY RECOMMEND THEM IF YOU HAVE ANY PLUMBING NEEDS BUT ESPECIALLY IF YOU HAVE A BIG JOB.
THANK KNOCKOUT, YOUR WORK ETHIC KNOCKED ME OUT.
Susan and Mark Kontich
Jennifer Keenan
I loved Knockout Plumbing. They exceeded expectations with communication and I really appreciate this! I would highly recommend them. They did a full replacement of piping under the house, which was built in the 50s. Top Notch. I love Ma…
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I loved Knockout Plumbing. They exceeded expectations with communication and I really appreciate this! I would highly recommend them. They did a full replacement of piping under the house, which was built in the 50s. Top Notch. I love Martin and Axel - they were great!
Andrea Ai
Professional and knowledgeable crews. I had a project for a whole building repiping for a multi unit residential housing and contacted 6 plumbing companies around. Knockout is the most cost and time efficient repiping company among all of t…
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Professional and knowledgeable crews. I had a project for a whole building repiping for a multi unit residential housing and contacted 6 plumbing companies around. Knockout is the most cost and time efficient repiping company among all of them. Their pricing is reasonable and they know what they are doing. Those guys kept their promises of the project timing despite of working late. They coordinated with the tenants and went above and beyond to ensure for a quality delivery. They take ownership of their responsibilities with the tenants and are very professional. We got all the repiping done with permit on time. Extremely grateful for their services!

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Special Offers

Free Estimate

This business may offer free estimates for some services.

Emergency Service

Emergency service may be available for urgent issues.

Frequently Asked Questions

They handle full-home and multifamily repiping, along with waste line and under-house pipe replacements. Reviews also note experience with older homes where cast iron or aging lines need to be upgraded.

Recent customer feedback suggests estimates are scheduled promptly, with clear explanations of scope and pricing. In some cases, work was able to begin the same day after approval.

Yes, services include clearing clogged drains and repairing or replacing sewer and waste lines. Customers report efficient diagnosis and follow-through on drainage issues.

Reviews from property owners mention effective coordination across units and adherence to project timelines. The team communicates schedules and access needs to minimize disruption.

Expect a walkthrough, written scope, and a scheduled plan for access and water shutoffs. Crews typically protect floors, work systematically, and clean up after each phase.
 Verified Listing

Opening Hours

  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

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Business Details

Business Rating
4.90 (322 reviews) Pro Listing
Address
191 Dillon Ave, Campbell, CA 95008
Business Type
Plumber
Website
https://www.knockoutplumbingrepipe.com/
City Page
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