Costellos Plumbing
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Costellos Plumbing
As a premier residential and commercial plumber, it is our highest priority to deliver quality plumbing services. We accomplish this, time and again, by using the very best equipment, supplies and techniques for completing plumbing installations and repairs! Whether you need a simple faucet installation or complete sewer line inspection, Costellos Plumbing offers a wide range of residential and commercial plumbing services to meet your needs.
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The mission of Costellos Plumbing is to provide honest, reliable, residential and commercial plumbing services that stand head and shoulders above the rest. We continually strive to exceed expectations by ensuring that each plumbing repair is completed correctly. When planning your next plumbing repair or maintenance project, rely on a company that offers unparalleled knowledge, experience and expertise.
Our courteous and knowledgeable plumbing professionals will always provide you with a clear assessment of what your plumbing repair or installation project will require. To begin discussing your plumbing repair, inspection or installation needs with one of our friendly and knowledgeable professionals, contact us today.
Reviews (17)
Sarah R.
Sarah R.
Jan 01, 2022
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These guys are AMAZING!!! I've had to call them twice in emergency situations and both times were at my door in an hour. Miguel came to fix a toilet leak on New Year's Eve at 5pm. Wasn't able to fix it, and showed up this morning, (New Year's day!) with a brand new toilet! Alex came to fix a broken pipe and while he was here replaced a piece on my toilet for me and fixed a leak on my garbage disposal as well. Gary and his crew are extremely professional, know what they're doing and are very reasonably priced! I'm so grateful for these guys!!!
Eva L.
Eva L.
Dec 05, 2021
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Gary Costello answered when I called yesterday evening for a clogged kitchen sink , gave me an appointment for early next day 9-11am, he arrived wearing a mask & shoe coverings, which was appreciated. He brought his snake machine through backyard to the clean out & ran it 50 ft, 2 x said the clog was at 35 ft. Explained everything , charged $225 less 10% for a total of $202, (the most I've ever paid for this) , he also shared recommendations to help keep pipes clean longer , a biodegradable substance which I immediately ordered on Amazon, he hosed down & cleaned area. Work has
Salony M.
Salony M.
Nov 09, 2021
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We hired Costellos for a plumbing job. We contacted Gary for an initial assessment. It was Miguel who showed up the next day for an inspection. He was very knowledgeable and didn't even charge for his visit. After speaking with few other plumbing companies , we fet to go ahead with Costellos as Miguel made an impression on us in terms of knowledge and honesty. We specifically asked for Miguel, Gary was very accommodating and sent him on his earliest availability. Miguel did a great job fixing our problem . He was very polite, efficient and seemed to know what he was doing. They cleaned up
Ramey M.
Ramey M.
Sep 16, 2021
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I've used Costello 4 times now, (Snaking drains, fixing toilet, replacing gas valve for new oven). They communicate very well and will text for appointments (wish I love!) They are reliable, kind and know what they are doing. Their pricing is very fair and competitive with pricing in SF and will give you a fair estimate on the project ahead of time!
Christine V.
Christine V.
Sep 07, 2021
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Thank you Costello Plumbing for being so responsive. I needed the backyard hose valve replaced and you came the next day. The plumber, Miguel, was professional and explained everything he was doing along the way. The repair took less than 45 minutes which was great.
Ell B.
Ell B.
Aug 14, 2021
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I was very happy with the work they did moving my tankless water heater. Punctual, competent work, reasonably priced, and overall just nice guys.
Ruth K.
Ruth K.
Feb 13, 2021
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I found this company after 8 pm after on outdoor pipe burst and I had to turn the water off to the house. They called me back before 11 pm and showed up at my home by 9 am It was a big job, completed beautifully. I am grateful. The water is back on in no time really. Miguel was kind, focused and easy to talk with.
Joe S.
Joe S.
Oct 13, 2020
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Had an issue with my dishwasher. Great service! Very friendly and wanted to be helpful. Will be my go to from now on. Thank you!
Tomes T.
Tomes T.
Sep 10, 2020
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Gary was so easy to work with -- he set up a sewer lateral inspection with us and worked around the schedule of the sanitary district inspector to get it done very quickly to help us move forward on a home inspection. Not only that but he showed up early and was all set up for the inspection by the time the inspector arrived on site. It was quick, painless, and his quoted price was comparable to other contractors in the area. We will be calling him back for plumbing repairs as soon as we close. Thank you, Gary!
Mikayla W.
Mikayla W.
Dec 02, 2019
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Gary is a an expert plumber. Very knowledgeable and experienced. I can tell he has seen it all and knows how to fix anything. We originally contacted Gary to help us figure out if we should install a new hot water heater or go tankless. He explained the pros and cons very clearly and helped us make an informed decision.

One month later we were demoing concrete in our backyard and our main water line and sewer pipes were damaged. We called Gary and he came right away to start fixing the damage. Because our pipes were in such poor condition, we decided to replace all of them with new copper pipes
Jo F.
Jo F.
Aug 18, 2019
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Gary redid the entire plumbing of my 1922 home, which was a mix of galvanized and old copper. He worked with us in terms of budget and timing the project with our travel needs. He was helpful, efficient, professional, honest and very easy to communicate with. Top quality work at a very reasonable price. I'm planning on working with him in the future.
Julie L.
Julie L.
Jan 30, 2019
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Gary is responsive, extremely knowledgeable but most importantly HONEST. In 3 minutes, he fixed our issue that another plumber could not. The other plumber spent 2 hours trying and also quoted me almost $2K to fix it! We will be calling Gary from now on for all plumbing needs.
Jacob V.
Jacob V.
Nov 13, 2018
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Called a few plumbers for prices, most were $200 and up just to look at our clogged tub. One guy tried to fix it but the tub required more work and I was quoted a high price so I declined. Saw Gary's ad on yelp had a few good reviews and for good reason. Gary was fast, polite, easy to communicate with and get in touch with, on top of being less expensive then competitors in the area. He did the same work I was quoted by another plumber for at least 40% less. Gary is now my go to plumber, even compelled me to write my first review! Thanks again Gary
Gabriela S.
Gabriela S.
Jun 14, 2018
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Hands down Costellos Plumbing was the best. Had a leaky shower and within minutes of emailing him, he responded. When he came over he assessed, presented options and was clear in all his explanations. I appreciated his efficiency and professionalism. He was very clear in what he was doing and made sure I understood all he was doing. I have for sure saved his number and he will be my go-to plumber.
J. A.
J. A.
Oct 05, 2017
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I am not one to frequently write reviews. However my experience with Gary and Joseph of Costellos Plumbing was exceptional. These two worked relentlessly to solve our two persistently leaky vanity sinks/drains. On three separate occasions Gary and Joseph came out to our residence to address and re-address the same problem, each day professionally and courteously whittling away towards an ultimate solution. Today, for the first day, there is no evidence of a leak!

I cannot recommend Costellos Plumbing highly enough. Gary and his team are skillful, dedicated and responsive. Additionally, they are
Joanne D.
Joanne D.
Sep 21, 2017
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Thank goodness for Gary. We had a kitchen clog that backed up into our tub. Older home and multiple plumbing issues required immediate action. Gary was quick to respond and managed to resolve our clogged tub to satisfaction. We have a good working plan on replacing and upgrading our kitchen sink thanks to Gary. We are looking forward to having him put in our future sink and water filter.
Charly K.
Charly K.
Jun 19, 2017
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I have found a business that I can trust. Costello Plumbing was referred by a neighbor and I have been happy with the work that Gary has done each time. He is great at explaining his approach and I feel like I am learning more about my home each time I hire him. Always a customer of Costellos Plumbing!