Top-rated plumbing installers for a remodel or addition.

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Top-Rated Plumbing installers for a remodel or addition in Cupertino - Updated Nov 2026

Avatar for Escamilla Plumbing and Rooter Inc.
Escamilla Plumbing and Rooter Inc.
5.0(
51
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"Gustavo was quick and efficient with diagnosing the issue, getting the parts and installing. It works perfectly. He had also installed my washing machine and replaced a valve for me and again, he exp0lained everything and finished the project. everything works very well. I will continue to call him for my plumbing needs."
Plumbing Project
Electric Heat Pump Water Heater
Shower Valve
Shower Area Remodel
New Bidet

+167

Response time1 day
Recommended by82%of homeowners
Avatar for Jess Plumbing
Jess Plumbing
4.9(
50
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Jess was did a fantastic job installing a sewer clean out for us. We had a major backup, sewage had backed up into the tubs and he came out on a Sunday to address our emergency. He was very communicative and explained the whole process. I will definitely hire him for all our future plumbing needs!"
Plumbing Project
Plumbing Project
Plumbing Project /water main
Old gate valve/ doesn’t shut off water
Installed new Zoeller sewer tank lid

+178

Response time1 day
Response rate100%
Recommended by93%of homeowners
Avatar for Mike Counsil Plumbing and Rooter
Mike Counsil Plumbing and Rooter
4.0(
331
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved (Corporate)

In business since 1994

Emergency services offered

Warranties offered

"I use Counsil for the quality of their work and trust them to do it to highest city inspection standards. I had to do two replacement sewer lines. Counsil plumbing did the digging, plumbing and cement work with same people; the other contractor did plumbing, subcontracted sleeving sewer line and subcontracted concrete work. Counsil left the house as he found it. The other contractor left trash, rebar and wood and never came back. Counsil used a price master and a detailed contract, the other contractor gave me verbal price which became opaque. I use Counsil when i need quality work that meets inspection specifications and am willing to pay for it."
Preparing a safe environment for working on a sewer line replacement.
Water heater installation with expansion tank
Additional Photos
Additional Photos
Additional Photos

+28

Response time8 hrs
Response rate100%
Recommended by81%of homeowners
Avatar for The Tankless Guys Plumbing Corp.
The Tankless Guys Plumbing Corp.
5.0(
13
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Sergio and his team came to our rescue after we had our water heater shut off by PG&E for a safety issue. We received a detailed estimate after a thorough evaluation. Sergio provided us a range of options and patiently answered all our questions. We decided to also fix other issues we'd been considering and we were provided with a fair estimate for completing all the work at once. We agreed to also install a pressure regulating valve and a home filtration system. The Tankless Guys team was punctual on the day we began the work. They did the best they could to minimize disruptions, letting us know when we would have a water interruption and returning it as soon as possible. I was impressed by their professionalism, communication throughout the project, and attention to detail. They took their time to clean up the area they were working on at the end of the day, covering potential hazards and marking them off, and organizing the space to begin the next day. The team did uncover a couple of issues in our older home, which caused the project to take a little longer. They did not cut corners - Sergio, Daniel and Ray took their time to fix the issues so the installations could be installed properly and up to code, and to avoid other problems in the future. We are thrilled with the quality of the work, the attention to detail, and the peace of mind that our home is safe again. It was a pleasure to work with the Tankless Guys! I'm sure we will call them again for our next plumbing project."
Give us a call today at 408-580-0031
Give us a call
give us a call
give us a call
give us a call

+5

Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Mike Counsil Plumbing LLC
Mike Counsil Plumbing LLC
3.9(
573
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved (Corporate)

In business since 2000

Emergency services offered

Warranties offered

"I would like to give "An Excellent Review" of the services, provided today (10 June 2021), by Bobby Mata and Jose ____ from Mike Counsil Plumbing Inc.. They replaced a faulty "Push-on" tub faucet, which has a gate valve for turning the shower-on / off, with a soldered-in unit whose engineered construction is much-more reliable and less-prone to leaking around the half-inch pipe to-which it was soldered onto. While their service charge was more than having a "handyman plumber" do the job, they absolutely guarantee the quality-AND-reliability of the materials-and-installation work provided; it's well-worth that additional cost....... Steve"
Installed Tankless
Sewer Line
Regulator
Tankless Water Heater
Tankless Water Heater

+3

Response time1 day
Response rate100%
113 neighbors recently requested a quote
Avatar for NS Plumbing
NS Plumbing
5.0(
9
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"We asked for a professional plumber and they sent us to the company NS Plumbing when Nestor arrived he gave us a reasonable price and installed our new water heater for us, Nestor is a is a professional at his job and would definitely recommend NS plumbing"
main sewer replacement
main sewer replacement
main sewer replacement
main sewer replacement
main sewer replacement

+2

Avatar for FAST REPIPE AND PLUMBING
FAST REPIPE AND PLUMBING
4.7(
26
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"We had a problem with the faucet in our bathtub that was leaking water so we called a plumber out that we’ve used in the past. And he quoted us $1200 to fix the problem. So, we decided to get another opinion and was referred to Hugo with Fast Repipe and Plumbing in San Jose. One of the things that we liked about Hugo is he was an excellent communicator. He asked good questions and listened carefully to our answers. He then took apart the faucet and described the repair process and any potential problems that might arise to getting the plumbing repaired. Fortunately, Hugo was able to make the leak repair. Hugo is a good guy. He’s easy to deal with. He’s an excellent communicator and we highly recommend him for any of your plumbing needs. We will call Hugo again if we need any plumbing work done in the future."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Bay Area Pro-Plumbing Inc.
Bay Area Pro-Plumbing Inc.
5.0(
14
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Bay Area Pro Plumbing did an outstanding job replacing our water main line. From start to finish, the team was professional, knowledgeable, and very efficient. They explained the entire process clearly, completed the work on time, and left everything clean when the job was done. The quality of workmanship was excellent, and we immediately noticed better water pressure throughout the property. It?s hard to find honest and reliable plumbers these days, but these guys truly exceeded expectations. Highly recommend Bay Area Pro Plumbing for any water main or plumbing work!"
Property clean out
Water main replacement
Water main replacement
1 neighbors recently requested a quote
Avatar for Giant Plumbing, Inc.
Giant Plumbing, Inc.
4.3(
29
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Professionalism, Quality work from his team. Gave me a completion date and finished a day early. Being long in the tooth I can recognize when someone has the gift of gab and just blowing smoke. Don was sincere and felt my pain. The work I had done was unexpected and major. Giant plumbing did an absolute terrific job and I would recommend them for big jobs to a leaking faucet. Thanks again Don & Giant Plumbing."
Giant Plumbing, Inc.
Giant Plumbing, Inc.
Giant Plumbing, Inc.
Giant Plumbing, Inc.
Giant Plumbing, Inc.

+4

Response time7 hrs
19 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Abdel's Home services
Abdel's Home services
5.0(
9
)
Plumbing for a Remodel or Addition - Install

Serving Cupertino, CA and surrounding areas

Approved

Hi, I’m Abdel, owner of Abdel’s Home Services. I’ve been providing residential repair and installation services for several years, helping homeowners with everything from small fixes to detailed improvement projects.\nI serve the Bay Area and surrounding communities, and I’m willing to travel locally for the right project. My specialties include TV mounting, door adjustments and installations, cabinet installation, drywall repair, fixture replacements, hardware installation, and general home repairs.\nClients hire me because I focus on quality, precision, and clear communication. I show up on time, protect your home, and make sure the work is done properly — not rushed. My goal is to leave every homeowner satisfied and confident in the results.\nI look forward to helping with your next project.

...
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FAQs for plumbing installation for a remodel or addition projects in Cupertino, CA

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 Cupertino, CA 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.