Giant Plumbing, Inc. logoApproved Pro
Approved Pro

Giant Plumbing, Inc.

Water Main - Install, Replace or Repair - For Business, Sewer Main - Install, Replace or Repair - For Business, Gas Piping,

About us

Giant Plumbing, Inc. Full Plumbing services since 1992. -No dig / trenchless sewer & water. -Repipes' pex or copper for residential-condos-apartments-commercial. -design / build complete Plumbing new- tenant improvements.

Business highlights

33 years of experience

Services we offer

Sewer Main, Trenchless, no dig services, Video camera Inspections and pipe locating., Water Main

Amenities

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.722 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
50%
4
14%
3
0%
2
0%
1
0%

Filter reviews by service

Showing 1-22 of 22 reviews
Anonymous
Jun 2025
5.0
Gas Piping
Job completed

MARK H.
Aug 2024
5.0
Water Main Install, Replace or Repair
Yes, I recommend this pro
Responded very fast, and took care of a pressing issue. Great integrity and craftsmanship. Don is a nice guy eager to please his clients. Look no more, youâ ve found the plumber you need.

Ajaz M.
Jan 2024
5.0
Water Main Install, Replace or Repair
Yes, I recommend this pro
$3,800
Don was professional and very courteous , he fixed my immediate need of main underground pipe leakage, Don and his team came on time, work hard, answer all my questions, fixed the repair work on time, using right tools to do job perfectly well on time.

Jaime N.
Jul 2022
5.0
Water Main Install, Replace or Repair
Yes, I recommend this pro
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.

David E.
Jun 2022
5.0
Drain Line Breakage Camera Locate
Yes, I recommend this pro
Although Don could only commit to an appointment 25 days out, he fit me in within 12 days. He explained thoroughly what to expect and compared it with what we saw. Hopefully his prediction is correct that I wonâ t have to call him again for the same issue. Thanks Don.

Sabrina H.
Jun 2022
5.0
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
Their quote was very reasonable. I was very appreciated the way they did their job. Don and his team were very professional, hard working, honest and very easy to communicate. They have put their customers satisfaction at first. Don was very helpful to me when I needed to get permits. He answered all my questions and guided me with great patience. Don also keep us updated with progress of the job. I was satisfied about quality of the job they did. they have provided excellent customer services.

Samuel L.
May 2016
4.5
Gas Piping
Yes, I recommend this pro
Worker is very courteous, he tells you exactly what he is going to do. Job was performed in a timely manner, follow up work is good. Price is right.

Patrick W.
May 2016
4.0
Gas Piping
Yes, I recommend this pro
I had a gas leak under the ground and the gas provider shut off gas line because of general inspection. Home Advisor provided me two companies to call for estimates for my project. Giant Plumbing responded very quickly and came to my home to give me the estimate. The project has been delayed for three days because of my decision. Finally I decide to go through Home Advisor and the turn out was great. Next time I will recommend the company Giant Plumbing, although the price is a little on the high side.
Response from Giant Plumbing, Inc.

"We appreciate your business. Thank you! We did provide you with an estimate and you did get other estimates and I believe we were the cheapest and did a great job. We had 2 plumbers on site for 3.5 hours a total of 7 man hours and charged only $700.00 parts and labor to repair 3 gas leaks."


Tim W.
May 2016
4.5
Gas Piping
Yes, I recommend this pro
Very satisfied with their work and Don was responsive during the process. His plumber kept me informed during each stage of the project. I would rehire them for future work.

Tim M.
May 2015
5.0
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
Don was very responsive and cost competitive with other bids I got. Went with Giant partly because they were able to get on the job the earliest and I was very satisfied with their work and they were done in the time they estimated. I will hire them again when required.

Richard M.
Mar 2015
4.0
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
The work was very satisfactory.

Janis J.
Feb 2015
5.0
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
The owner Don and his team were very professional and courteous. The scope of the job grew but am happy with the outcome and fair price. I'm confident if there happens to be any future problem, Don would stand by his work. Yes, would definitely use again and recommend to others.

Steve R.
Jan 2015
5.0
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
Very detailed when explaining what was needed. There team was very curtious and proffesional. I will use them again and recommend there services.

Ron G.
Feb 2014
4.0
Water Main Install, Replace or Repair
Yes, I recommend this pro
I would hire Giant Plumbing again, overall I am very satisfied, said the job would be done in 2 days but finished in 1. Will recommend to others.

Joni S.
Oct 2011
N/A
Sewer Main Install, Replace or Repair
Yes, I recommend this pro
Donny knows his business and is on time and efficient and was competitive on his pricing.

Jerry D.
Jun 2010
N/A
Yes, I recommend this pro
They did a great job. They gave a bid for the work which was reasonable. They arrived on time, replaced the two leaking waterlines and cleaned up after they were finished. I would use them again.

Allison B.
Mar 2010
N/A
Yes, I recommend this pro
job was done quickly, plumber was friendly and efficient. Minor problem found that evening came next day, first thing, and fixed right away.

Marilyn D.
Feb 2010
N/A
Yes, I recommend this pro
They were fast and thorough. Arrived on time and we had a very helpful technician. do the install. M. Donahue

Janice V.
Feb 2010
N/A
Quick to respond to request. We discussed everything that needed to be done and I agreed on the price. Different person showed up to do the work and did not know the details of what was discussed to be done. A couple of things were not done as agreed on with the first guy. He cleaned up inside but left garbage outside the house on the ground without asking me where I would like it or even letting me know it was there.

Tony T.
Nov 2009
N/A
Well I had a broken pipe, they responded immediately. Instead of fixing the one break, I had them re-pipe, which they did promptly. This required lots of sheet rock to be opened up to install new pipe. They put down tarps to collect the debris. But when it was time to leave, they just shook the tarps out in place, right onto the carpet. They accidently broke a window in the process. That took a week and half to fix, and it was just a simple single pane window. Then I asked them to fix the sheet rock. That took two weeks to fit into their schedule.

Susan S.
Nov 2009
N/A
I was told the charges would be flat rate (not time and materials). The plumber called the office to tell them what needed and I was quoted a rate, which I accepted. When parts were needed for a toilet tank leak, the plumber didn't know what to do to get them, and the office did not respond to three of his calls. He left without completing the work. Later he returned with the parts, but charged me for them. He did not have and forms for a receipt, so I needed to sit by the computer while the office emailed me a bill so I could take the check out to the plumber who was waiting in the car. And the toilet tank is still leaking.

Joe J.
Sep 2009
N/A
Yes, I recommend this pro
Very Professional and Customer Service oriented

Licensing

Licensed*

Trade License Number

655071

Trade License Locale

CA

Trade License Expiration

12/31/2026

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Giant Plumbing, Inc. is currently rated 4.7 overall out of 5.
Giant Plumbing, Inc. accepts the following forms of payment: CreditCard
Yes, Giant Plumbing, Inc. offers free project estimates.
No, Giant Plumbing, Inc. does not offer eco-friendly accreditations.
No, Giant Plumbing, Inc. does not offer a senior discount.
No, Giant Plumbing, Inc. does not offer emergency services.
No, Giant Plumbing, Inc. does not offer warranties.

Contact Information

2111 Dry Creek Road, San Jose, CA 95124

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