We had a great experience with Giant Plumbing and couldn't be happier with the outcome. After a previous water line repair by another company didn't meet our criteria, code, or accepted plumbing standards, Don carefully evaluated the situation, clearly explained what needed to be corrected, and handled everything professionally from start to finish. They fully removed the prior work, rebuilt the system to code, and completed the job exactly to our specifications. Their communication was excellent throughout -- thoughtful, transparent, and never rushed -- and the quality of workmanship was outstanding. The final result is clean, secure, and exactly what we had hoped for from the beginning. It was a huge relief to work with a licensed professional who takes pride in doing things the right way. We would absolutely recommend them and wouldn't hesitate to hire them again. read more

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I couldn't be happier with the work Don did replacing the water line to my house. From start to finish, his communication was excellent--he kept me informed every step of the way so I always knew what was happening. His bid was very competitive, and the quality of his work was outstanding. The whole process was smooth, professional, and stress-free. It's rare to find someone so reliable, honest, and thorough. I highly recommend Don for any plumbing needs! read more

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Don and his crew worked on a neighbor's sewer line, so when ours backed up, we called him right away. We had previously had roto rooter come out and clear the line, and got a quote for replacing the line. When Don's crew came out, Don quoted a very fair price for the work, much better than the other guys. Our line needed to be replaced, and they did a very quick and thorough job. They also discovered a leak under our house and fixed that on the same day as well. Don's communication was great- he was always easy to get ahold of and gave us all the available options, plus explained how everything worked. Definitely recommend them for fair prices, good work, and honest communication. read more

Don was very responsive to my urgent wishes of unplugging a sewer line, which was causing sewage to spill out on the driveway and street. He also arranged to replace a hose bib and pipe to remedy a water source leak the same day. More importantly, he kept me closely informed regarding the progress of these repairs, and found him pleasant to work with. I highly recommend Giant Plumbing to anyone. read more

Giant Plumbing - Replace hose bib and pipe - Plumbing Near Me - San Jose, California

We used Giant Plumbing to move a gas line in our back yard. Don was quick to respond and his bid was prompt and thorough. He and his team were very good about explaining the scope of work and the time table. These were important factors in choosing this company. They finished the project on budget and on schedule. Very professional and nice people. Recommend ***** read more

Don and his crew are great. They did 2 jobs in a timely manner and were very nice and helpful. Highly recommended.

These guys are the best! Don is verrrry knowledgable, and he did a great job. Some details - I called him for a backed-up shower line at 2pm in the afternoon on a Sunday, and he got to my house within an hour. He spent time putting in a temporary fix and then got his guys to come back the next day with a permanent fix, and he kept the cost very reasonable. I have used him twice and will continue to use him. BTW, my review says I am in Vancouver, which is incorrect; I am in Menlo Park.... read more

Donny was so helpful to me. I called him last minute and he made sure I was taken care of the weekend of the Fourth of July. he was short staffed and the person he had scheduled for me got sick. Donny was willing to come and do the job himself for me after working all day but I said I'd be ok for another day. The job was done efficiently and very economically. His prices were by far the best and he diagnosed accurately. Two other plumbers quoted me over a thousand more to do a job that was entirely unnecessary. Donny is honest and can be trusted. He followed up afterwards to make sure everything was done to my satisfaction. I would highly recommend Giant plumbing. read more

I contacted Giant Plumbing for installation of earthquake shutoff valve and water leak detection and shutoff system as mandated by my new insurance company on a short notice. I only had two days to satisfy the requirements in order to prevent cancelation of my new policy. I contacted Don of Giant Plumbing, and I'm so glad I did... The following describes my service experience with Giant Plumbing: prompt, accommodating, knowledgeable, qualified, experienced, clean service, trustworthy. read more

Don, Chris & Team did a fantastic job installing my 95,000 BTU commercial natural gas wok range in our backyard. With the amount of BTU power, we need to make sure that our project is done correctly and professionally. Don, Chris & Team delivered just that and communicated every step of the process, from adding a second natural gas line to creating a new platform. Don't cook inside and smell up the house. Don't cook in the garage, it still smells up the house. Do it right and call Giant Plumbing. I haven't cooked like this for years, a bit rusty, but it took me only 3 mins to make fried rice. The flavor was amazing. I even amazed myself. If you want the job done right, I recommend Giant Plumbing. Our next project will be changing out our pipes. Guess who we will be calling? read more

Giant Plumbing - My beautiful wok range. - Plumbing Near Me - San Jose, California

Wow! What can I say about this company well a lot actually! From the very first call to the end of the project Donny was spot on! He always answered my text & calls. He was very responsive in addressing my gas replacement line, even putting in a temp line so my family could have heat & hot water during the holidays which by the way was not the upmost ideal time for this work since most companies were on holiday. His guys were great to work with and spent their days working in the rain but that didn't deter them to get the job done. They made sure everything was turned on before they left once the gas line was ready. I highly recommend Giants Plumbing if you need a gas replacement line or any plumbing needs read more

Don took my $100 deposit and never came back. Waisted six months of my time on our septic project.

Our ADU was backed up and we needed a roto-rooter to snake and use a camera to check out what was going on. Given that the unit was new and had recently passed its final inspection, we were at a loss at what it could be. Don was very responsive and was able to come out the next day. Both him and Juan worked hard to diagnose the issue. Once Don was able to spot the cause, he offered to fix it even though the appointment was really just to diagnose the problem, and he also continued to use the camera and make sure there wasn't anything else further down the pipe that could be a potential problem. He was very straightforward on what needed to be fixed and what could be left alone, and I really appreciated that. I found him to be honest and incredibly thorough with the job. I really hope I won't need his services any time soon, but when I do, I'll definitely give Giant Plumbing a call. read more

I had an urgent issue pop up with my home water main line. It developed a leak in the 25 year old pvc line and was in danger of massive failure. After calling giant plumbing, Don was at my house within the hour. He provided me with a competitive repair bid which I accepted. He had someone on site and repaired that day. They also replaced my entire water main line without digging up my lawn. They also replaced all of my obsolete sprinkler heads and left the job site clean and orderly. I highly recommend Giant Plumbing. They are local and will definitely call them first for any future plumbing needs. Thanks!! read more

I will never recommend to use Don and his crew, they had doing some re pipe work for us and it turned out to be a nightmare! Way over charging, never on time and the biggest problem is we had other company to come and finish there job as they did a very sloopy job. Donny is very aggressive person and have bad temper, he basically told me I'm a lier and they are the best company. How he even stay open for business i don't really know. DO YOUR OWN RESEARCH! read more

Don and team did a great job installing out side home sewer line replacement. They give me good price Thanks JASBIR SAINI read more

Worst plumber ever! Avoid this plumber at all cost. Nice guy when he bids the job. After he's got the job he's an asshole. Constantly argues and raises his prices. I hired this guy for $6,000 to repipe and to fix a leak after three weeks and the worst Plumbing job I've ever seen, he still did not fix the leak. Could not pass inspection had to hire another plumber to fix his work for $4000. Don't even call for a bid. Sweet talker until he starts then it's all bad! read more

Don and his team did a great job replacing our main water line from the water meter to the house (trenchless). He promptly provided a quote and was able to start the job the next day. Even though there were a few complications due to work previously done by others, the team was able to finish the job in one day and restore water service. The work area was cleaned up after the job was complete and the small area of concrete that had to be cut adjacent to the water meter was repaired. read more

May 2018 I hired Giant Plumbing to replace my septic tank with a sewer line. The normal time to physically get this job done would be 2 weeks max. I understand that there is permitting and government regulations. That is why we hire a contractor to deal with this. I was assured by Giant Plumbing that this project would be complete by the end of August 2018. By October of 2019 all I had was a pipe in an open trench that aggravated my neighbors and I. This trench on the edge of a driveway that services 4 homes, is still open on my property, but the neighbors got so frustrated that they buried it after being open for 4 months. Giant Plumbing was great at responding to the request for work but extremely poor on the follow through. They make a point in avoiding communication. They will communicate with you when it suits them. Weeks of texting, emailing and phone calls go un-answered. They also make a point in letting you know that you are not a priority. If larger more lucrative jobs become available, you end up on the bottom of the list. I was "ghosted", abandoned. After sixteen months of trying to get this project done, I let him go (with no response from Giant Plumbing). I am now stuck with going through this process a second time. I've been played. My reputation and standing with my great neighbors was diminished. I would never consider them at all on any major work. You'll be left stranded. read more

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Sewar line replacement. Giant plumbing did excellent job for sewarline replacement outside home at great price .thank you J saini. read more

Received a call from my tenants about the water heater Leaking problem on a weekend morning. I immediately called several plumbers. Don was only one answered my phone in this urgent situation. He went to the property on the same day to check problems, ordered parts, and helped to drain the water left in the heater right away. He and his crew installed a NEW water heater in the very next morning! Now the water heater is working beautifully. My tenants are very happy and I cannot thank him enough! Highly recommended! read more

We used Giant Plumbing to help us with our huge home remodel this summer. They installed a pump station for our sewer line, replaced a ton of 50 year old pipe, added new gas lines, installed finish work for our bathroom and laundry additions as well as finished out our brand new kitchen. Don and his team did a great job. They went above and beyond what was required for our project. Communication was clear, our invoices were timely and organized, and the work was done well. I felt really comfortable with the team of workers in our home. I am usually wary of companies that don't have spotless Yelp reviews, but after talking with Don about our project and outlining our needs, I felt really comfortable awarding him the job. He may be the best kept Yelp secret for plumbers. We have work that we are planning on getting done in the future and there is no question on who we will call. read more

I used GB "Don" years ago and he did a good job. Early December 2015 we had a bathroom leak and a kitchen faucet problem so I called "Don". This time two helpers came to repair, Don just collected money. Both repairs were faulty. Many calls, texts and emails later Don said he was sick and would come early January. Nothing. Just ignored. The new faucet did not match the old dishwasher vent cover, so at the time Don offered to find us a match. He never did and refused to even return the one he took. Maybe he was good at one time that has past. read more

I scheduled an appointment with Don at Giant Plumbing to fix my kitchen sink. He didn't show up, and didn't respond to multiple phone calls and messages. He called me back after several hours, saying that he got the time wrong, and he never missed an appointment before. Fine, we all make mistakes. I rescheduled with him for the same time next day. Again, he didn't show up. He didn't call or msg to let me know in advance, and didn't respond to my repeated calls and msgs. This time he also didn't bother to call me later to explain. These are the facts, you can make your own judgment how trustworthy he is. read more

Don was very knowledgeable about his work. Said what he was going to do and then completed the job with out any hiccups. Very honest and sincere guy. He said pay me when your completely satisfied. I'm very satisfied and would highly recommend him and his company. read more

I was scrambling to find someone to clear my mom's sewer line and Giant Plumbing came through with flying colors. It became obvious that my mother's old house was in need of a much more complicated job than previously anticipated. I knew the day would come in which a new sewer line and clean outs would have to be scheduled and I dreaded that day for years. I've had trouble with contractors in the past, as we all have,... showing up on time, or showing up at all, keeping me well informed of work in progress and sticking to an accurate estimate. Don And his crew, are by far my best experience with any type of home repair or improvement. They squeezed me in to their tight schedule, kept me well informed and stuck to the estimate which was discussed from the beginning. No BS, all business and fast turnaround. Shout out to Juanito. Never seen such hard worker,... not afraid of getting dirty, always polite and respectful. Can't say enough about Giant Plumbing. Thanks to Don and Stacey. read more

I bought a new gas dryer and I was not going to try and install the gas line by myself. I called many places but I am glad I chose Giant Plumbing. Don was excellent. He showed up on time and performed the work very quick and efficient. I now have a working dryer!!! read more

It was great working with Don and his team. They are very responsive and eager to help. I would recommend Don and his team for any gas/plumbing needs read more

We had Don to re-pipe our house with the copper one, and the work was completed on time and met our expectations and, most importantly, our budget! Don is very knowledgeable of his job and patient to explain various solutions for us. Last month, Don helped us to unclog the water pipe from the kitchen area. He came for inspection the day after our call and scheduled the work a week out. He also helped us fix the water leakage at the same time, and a couple of days ago, we noticed it had some minor leakage again. Don came at 7 pm, the same day we called him to fix the problem. Now, we are planning to have him install a sewage outlet, another big project! read more

Donny came yesterday to help us fix our water heater. He identified the root cause and fixed it very quickly. He is very technically strong. In addition, he is very honest. When we first call the company, we thought it is another issue which will take much longer to fix. After Donny came and identify it is different issue and easier to fix, he reduced the price. We have a leaking garbage disposal and previous plumber we worked (also who broke it) said we need a new one (our garbage disposal is new last year) and charged over $500. Donny quickly identified the issue and said the garbage disposal is good and don't need replacement. Another thing is that the communication is very good. He explained the things very well to us. Moreover, his personality is cheerful. We'd like to work with him in the long run. read more

We had a hot water heater that needed replacing same-day. I called up Don, and he and his employee came out and dealt with the problem that day. They arrived early, were always very responsive over the phone, were nice to my wife and Don has responded to questions very promptly since. I'd recommend them. read more

Giant Plumbing was recommended to us for a simple drain unclog. While they were quick to setup an appointment, they never actually showed up. The first time it was because they had forgotten the machine. That's ok, I'm pretty patient, I'll continue eating off of paper plates and keep the dirty dishes in the dishwasher. It's only been about 5 days...So we rescheduled to the next day, and he stated he would give me a call when they were on the way. I suppose that part was true, cause I never got a call. I called them back and left a message asking for an update. That was 4 hours ago. In those 4 hours, I called RotoRooter, they confirmed my appointment, sent somebody out right away who was professional and friendly, and cleared my drain. AND they charged the same price as all the other plumbers in the area. I don't mind mistakes, everybody makes them, but I can't stand incompetence. Giant Plumbing made it quite obvious that they didn't want my business. I suggest we give them just that. read more

As part of selling our house we agreed to abandon our septic tank and connect to the city. I got three quotes and while Giant Plumbing wasn't the cheapest I felt like they were the most competent. Sure glad I did! While pulling permits, Don let me know there were some old permits still open from the previous home owners which could have slowed the current permit for the septic abandonment. I was completely clueless on what to do but Don helped me out and let me know exactly what to do to close out the permits. His crew was on time day 1 and they were very respectful and took extra care to protect our landscaping. On inspection day Don was personally there to walk with the inspector (the owner walking with inspector? Is that typical?). There were a few items the inspector pinged us on from the previous owners but Don had his team fix the items on the spot. He made a stressful situation as painless as possible and we sure appreciate it! read more

It's been a great experience getting our gas line work done from Don. He was extremely prompt in his response and got us the quotes fast. We had so many contractors come in to give us the quotes but they were very cost effective. The service was also great and the team of people who came down to do the work were professionals. Very happy with the service. read more

On Christmas Eve I had a plumbing issue. A connector for the toilet broke. I called Giant Plumbing and Don said no problem we will be out 11-12:30. Perfect! They showed up at 11AM on the dot! They explained the problem to my mom and also texted me the pictures and prices. The customer service was above and beyond what I expected. I said I needed the job done that day and they totally did! The plumber that was working on the job continued working while ANOTHER plumber went out and got the parts...no time wasted. Don kept me updated throughout the day, something he did not have to do but I greatly appreciated. They did the job, cleaned up everything and no hidden cost. The price quoted was the price paid. The customer service was outstanding, the work done was professional and timely and the guys were great. I can't say enough about this company. 5 stars just aren't enough. And it was on Christmas Eve...thanks Giant Plumbing for making a frustrating problem a pleasant experience. read more

Donny was very reasonable with his quote for a new gas line. We needed the job done the next day, due to the appliances being delivered the following day. Donny was upfront about his schedule and sent his brother Dave to complete the job. Great guys to work with, got everything completed in the same price and timeline. read more

Giant plumbing and Don is the best prices and the best job done in the Bay Area. He helped us instantly with our plumbing and did a great job. Definitely recommend read more

I am a local plumbing contractor here in San Jose Area. Don from Giant Plumbing has experience with large and medium size plumbing jobs. They have performed several sub-contacting services for me over the years. I will continue using Giant Plumbing's service, as I am aware of there capabilities of successfully completing larger plumbing projects. His plumbers Juan and Freddy are hard working and knowledgeable. I would recommend Giant Plumbing for larger more complicated plumbing services read more

Giant Plumbing did two warranty repair jobs at our house. The work was performed based on the 10 year warranty from the previous home owner. Upon contacting GP for a 3rd repair, suddenly they had no record of ever performing work at our house. Donny Jo Gregg said they had a new computer system, did not have access to their files, and that it was the customer's responsibility to keep all the records. We supplied the same paperwork that we did the first two times but now it did not satisfy them. We were forced to bother the previous home owner to supply bank statements to prove payment for the original job and they spoke to Donny personally. That still did not satisfy them. He strung us along, saying they were "looking into it" for 5 days, without hot water! Donny was far from understanding. Our family, with 2 small children, went a total of 6 days without hot water! He never got back to us and we decided to move on and call a more reliable company. Giant Plumbing was a huge headache to work with all 3 times and we would never recommend them to anyone. read more