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Business ProfilePlumbers in San Jose, California

Allstar Plumbing

Allstar Plumbing is a San Jose plumbing company serving residential and commercial buildings. Its work includes pipe and fixture repairs, water heaters, gas lines, repiping, and sewer and drain service. It opened in 1996 with two used vans and two plumbers and has grown to 16 fully equipped, stocked trucks.

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Business Highlights
  • It lists a C-36 plumbing contractor license, number 732611.
  • It says work guarantees vary by job from 30 days to a lifetime.

Service Area

San Jose, Alviso, Belmont, Campbell, Coyote, Cupertino, Fremont, Gilroy, Hayward, Los Altos Hills, Los Gatos, Menlo Park, Mountain View, Newark, Palo Alto, Redwood City, San Carlos, San Mateo, Sunnyvale and Woodside.

Public local listing. Allstar Plumbing is one of 10 plumbers ProsGrade lists in San Jose, California.

Listing details

10 services listed, including Pipe leak repairs, Water heater repair and replacement and Repiping. Open 24 hours, 7 days a week. 318 reviews.

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

How This Business Compares

How Allstar Plumbing compares with the other 9 plumbers on ProsGrade in San Jose, using public Google ratings and review counts.

  • One of 10 San Jose plumbers on ProsGrade.

Trust Signals

24/7 availability for scheduling and service calls.

Services Covered

10 services
  • Pipe leak repairsCrawl spaces, walls and under slabs
  • Water heater repair and replacementTraditional tank and tankless; gas and electric
  • RepipingFull replacements or selected pipes
  • Underground pipe repair and installationWater mains and irrigation lines; full replacements or spot repairs
  • Gas line installation and repairInstallations, upgrades and repairs
  • Sewer and drain cleaningSewer main backups and slow individual fixtures
  • Fixture repair and replacementToilets, kitchen sink faucets and shower faucets
  • Cleanout installation
  • Sewer video inspectionSewer camera and location equipment
  • Leak detectionAdvanced leak-detection equipment

Reviews

What customers say

Several customers praise the technicians' respectful manner and clear explanations. One customer credited Joseph with patiently addressing a loud humming noise and checking the whole plumbing system. A customer also reported changing diagnoses, an unsuccessful shower-cartridge installation that left a showerhead leaking, and being told further work required additional payment.

Customer Reviews

Gabriel Otte

We first contacted Allstar to fix a water mixing issue. They came and charged us to diagnose the problem and said that it was a cartridge in one of the showers that had failed that was causing the cold and the hot water to cross over. They then charged us more to fix the problem. So far, so good. They installed the new cartridge and told us that it was fixed. A few weeks later, we were still having the issue and so we had them come back. Another guy, Jose comes out and says our issue was that actually our recirculator was sending hot water into the cold and that they needed to install a stop valve so that the flow was unidirectional. I once again, double checked whether this was going to fix the problem and they assured me this was the problem. So they charged me another few thousand dollars to redo the piping. After that, they said that that didn't fix the problem and that it was the cartridge after all and they had misdiagnosed which one of the showers had failed in the first place. So they came back and said it was this other shower that was the problem. So they took out the old cartridge but couldn't install the new one due to some build up. Now, this failed install is causing the shower head to leak constantly. Except, the owner, Sergio now doesn't want to do more work unless we pay more money on a problem they misdiagnosed and a leak they caused in the first place. Now I have a leak that they are refusing to fix without more money and they still haven't fixed the initial mixing issue. Evidently Sergio has been complaining about how he has already lost a lot of money of this job as a reason for not doing the right thing here. FWIW, they seem like nice guys (at least when talking to them) but from a business and quality of work (not to mention value), I would steer clear from these guys. I'm really disappointed because generally you want to support local businesses. I think this is one of those cases where when pushed to the limit, they won't actually pony up to fix the problem.
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Jacquelin Lloyde

I am 94 years old and live by myself, and it can be very difficult for me to manage home repairs. I do not use the internet very much, but Joseph kindly showed me how to use speech-to-text on my phone so I could leave this review myself. I truly wanted people to know how wonderful he was. For weeks, there was a loud humming noise every time I used the water, and it was driving me crazy. At my age, you appreciate peace and quiet, and the sound was very upsetting. From the moment he arrived, he treated me with patience, kindness, and respect. I am hard of hearing and move slowly because of arthritis, and he never once rushed me. He took his time to listen carefully and explain everything in a way I could understand. He didn’t just fix the problem — he checked my whole plumbing system to make sure everything was safe. No plumber has ever done that for me before. He even had to cut into some of the stucco to do the repair properly, and I was worried the price might go up. It never did. He kept his word exactly. That meant a lot to me. In my long life, I have met many contractors. Joseph stands out as one of the most honest, hardworking, and compassionate young men I have ever encountered. His workmanship is beautiful, and his character is even better. If you want someone who truly cares, who does the job right, and who treats you like family, call Allstar Plumbing and ask for Joseph. Thank you, Joseph. You really are an Allstar.
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Milan Desai

Joe L arrived within 2 hours of my evening call and was very respectful and knowledgeable. The price was reasonable and agreed upon up front (no surprises). He was very careful and patient and did not rush the job. He went beyond just fixing the surface problem to helping investigate the root cause and giving good, honest advice.
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Frequently Asked Questions

How does Allstar prepare an estimate?

It says it sends a plumber to the residence or business and provides a free flat-rate estimate; estimates requiring major labor and equipment may incur a charge.

How long can a water heater replacement take?

Allstar estimates around three to four hours for a tank-style unit and four to six hours for a tankless installation.

Does Allstar offer financing for water heater replacements?

It says flexible financing options are available for water heater replacements.

Does Allstar handle emergency plumbing calls?

It says emergency plumbing service is available around the clock, usually within an hour.

How long can a pipe-leak repair take?

It says simple repairs may take a few hours, while more complex cases could take a day or more.