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We know you have better things to do than call us because you have a clogged drain or a backed up drain. That is why we make sure you get a trained, qualified, professional plumber to fix your problem. Plumbing obstacles can have a disastrous outcome, putting not only your complete plumbing system, but also your home and belongings at risk.

Trenchless technology is ideal for installing, replacing, repairing, and maintaining water and sewer pipe systems. Having trees as part of landscaping has many benefits - and detriments.
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Our plumbers are composed of specially trained individuals who take their plumbing careers seriously. They are specifically trained in the technical areas of plumbing and plumbing diagnostics to ensure that your problems are repaired in a methodical manner to ensure that you don't have to call us again for the same problem.
Yes, Plumbers are the only type of contractor that is licensed to install gas lines in your home or business. Yes, qualified plumbers are best suited to the size and install sump pumps and related systems. It will not affect your rates to call your insurance and inquire whether or not it is worth making a claim.
What you won't hear from other plumbing companies is that you can prevent your drains from being clogged in the first place. The truth is that a properly installed and vented sewer line that is in healthy shape will not ever clog unless there is foreign debris in the drain. Foreign debris is defined as anything that does not belong in your drain or toilet such as q-tips, handy wipes, paper towels, feminine products, roots, etc.
Plumbing obstacles can have a disastrous outcome, putting not only your complete plumbing system but also your home and belongings at risk. This can cause severe damage to your furniture and flooring. If you've got a plumbing disaster, contact Duncan Plumbing. We have the training and tools to manage all types of plumbing tragedies in a sensible and qualified style.
Reviews (30)
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Jessica L.
Jun 30, 2022
We had occasion to use Duncan twice, for two different things, in the same week. They are top-notch providers from the first call to checking in after the work is done. They show up on time and do not try to sell you things you don't need. My only sadness is that to get this kind of service, I paid twice the amount I was used to for a basic service.

While we could cover the expense, I would ask a lot of questions if you are on a limited income. If you need help on a weekend, they charge an extra fee on top of their regular rates. Again, the service is the best I've had in years, but it comes at a cost.
Jessica Williams
Jun 21, 2022
When I called the office, they were very helpful. Given that our kitchen sink wasn't functional, I appreciated the day of service. They contacted us prior to showing up, earlier than expected. They brought parts and were able to resolve the problem within an hour. Price seemed comparable to other plumbers based on online reviews. Service: Plumbing pipe repair
Ryan Doherty
Jun 14, 2022
As a Long term residents of Santa Cruz and a License bonded and insured General contractor I am always completely astounded with the level of professionalism and care with Duncan plumbing. Out of the era of poor service and disappointment Duncan plumbing is a breath of fresh air. With their extremely knowledgeable & friendly staff "which always treat my family and clients as they would their own" you will get the utmost of quality and service.
Matt Furman
May 24, 2022
I contacted Duncan for a sewer lateral inspection on a very tight timeline, and they were able to squeeze in the request at the earliest possible interval. They were also extremely responsive, and got the paperwork out to me, stamped and completed by the county as well, within 48 hours of the inspection. Considering how quickly we needed to move and how late in the process I called Duncan, I was very impressed by their commitment to rapid response and excellent service. I would recommend them to anyone!
Desiree Foxworthy
May 19, 2022
I recommend Duncan Plumbing and their team who always provide good service at a reasonably price. On the latest visit Nui installed a water filter at the garage goin into the refrigerator. Previous to that, I had a mainline leak due to stoppage, irrigation leaks, water pressure problems and more. I wish I could remember the names of each individual but all were professional, pleasant and arrived wearing masks - also booties for inside the house. Thanks to all.
Katherine Harper
May 18, 2022
The most knowledgeable, communicative, and high quality service provider for home repairs that I have hired to date. My mind is at ease with Duncan and the staff is wonderful (the rest of my family use them and agree!). I will be hiring again for additional needs. Thank you! Services: Plumbing leak detection, Shower repair, Plumbing pipe repair, Plumbing leak repair, Drain cleaning
Paula Smith
May 07, 2022
Duncan was great to work with! Everyone was so friendly and their communication was excellent. Both the office and the repairman called and kept us informed at every step. We highly recommend them! Services: Outdoor plumbing system repair, Plumbing leak detection, Sewer repair
Eric Mann
Apr 28, 2022
Both technicians were great, but Nui in particular went above and beyond: very good at explaining the process of diagnosing and fixing my sewer drain. He also told me exactly what would happen after the visit in terms of communicating with our park manager and how the billing process would proceed after their work. I highly recommend these guys!
Pete Kennedy
Apr 08, 2022
Duncan was great. They took care of my job quickly and took care of a few extra little details that made a big difference. Because of our new heat pump water heater we have fossil fuel free showers! We got a $3k rebate back from the state.what's not to love. switchison.org Service: Water heater installation
Surfdawg M.
Mar 22, 2022
Duncan plumbing have been lifesavers for my business. Scott and his crew are responsive, professional and have great communication skills Definitely 5 stars!.
Cristina Gamboa
Jan 23, 2022
Duncan plumbing was great. We called them needing services during the busy holiday months expecting them not to be available for weeks and it was just the opposite! George and his team were responsive and accommodating to set up a time that worked for us to get the job done asap. We replaced our entire incoming clean water lines as we had old galvanized pumps on the verge of creating a disaster.

It was a 3 day job and they communicated with us each day on the progress and timeline. Everyone for the scheduling staff to our crew were all professional and nice. Highly recommend!
Douglas M.
Jan 06, 2022
Our Outflow was majorly compromised by roots. Duncan made sure that the work to eliminate the problem was done right and that we were well served. Pricing was upfront and very reasonable. I highly recommend Duncan. Friendly, understanding, hard working group of people. Exactly what you need when the plumbing goes bad. Thank you Duncan Plumbing!
Pilar M.
Jan 06, 2022
Great Business, Great Plumbing Company! Great communication and great customer service. Work was done with care and with effort to make sure it was done well. Cannot say enough about how please I am with Duncan. They helped me out and did not over charge on a holiday. Thank you everyone at Duncan! Call them when you need a good knowledgeable plumber. You will not be disappointed.
Meredith B.
Dec 23, 2021
MIguel was very, very nice! The knob in the tub wasn't working; it didn't bring the water up through the shower instead out of the tub spout--a small issue but very annoying! Miguel came out at the time promised and fixed the problem. He was careful to explain to me what was wrong and was gone in an hour.
Dennis M.
Oct 26, 2021
The technician was friendly and helpful. However, their prices are high. There was some attempt at up selling. The technician did a good job and there are no leaks after replacing the bathroom faucets. I have updated my review because they reached out and helped the situation.
Nicole B.
Oct 13, 2021
My hot water quit on Sunday. I called at 9am Monday and two guys were here by 5pm. When we went down to my basement to look at the water heater, we discovered a foot+ of water in my basement! They stayed calm, shut off the water & got to work. I was NOT calm. To my surprise they put trash bags over their legs & went in! They found & repaired the leak & even pumped out some of the water.

I was so afraid they would tell me to get rid of the water & call them back when its gone, leaving me with no water in the meantime, but they didn't! They dove in and saved the day! Thanks guys, I appreciate you!
Gary W.
Sep 08, 2021
I called Duncan plumbing on a recommendation and I live in the county approximately 15 miles from their front door. It turns out that they service Watsonville which is at least 18-20 miles from their front door and despite needing two separate services performed, they blew me off.so I thought I'd return them the favor.
David Robles
Aug 26, 2021
We called Duncan to request same day emergency service, they were able to dispatch Miguel before the after hours fee kicked in. Miguel is very knowledgeable, happy to describe his work and offered tips. He came ready to get water running again. We are very pleased with Duncan's customer service and Miguel's workmanship. By the way, in our desperation to get water running again, we called other plumbing companies and even they recommended Duncan for same day requests.
Paige G.
Jul 30, 2021
We had a leak and we were unsure of its origin. Duncan Plumbing quickly worked to add us to their scheduling to help me as soon as possible. They were extremely communicative and professional. Once at my home, the plumber worked efficiently to identify where the link was coming from. Once the leak was found, the work was done well and the area left clean. I would highly recommend Duncan Plumbing.
Bill P.
Jul 27, 2021
Miguel Fernandez installed a new toilet this morning with quality workmanship, advice in its selection and care, while making the work an enjoyable experience for me. Thank you for providing his excellent service. bill Patterson
Meg S.
Jul 04, 2021
Great service! Felt safe! So extremely pleased with the expediency of service by Jorge at Duncan Plumbing Santa Cruz. He arrived on time (actually early after getting a call to see if that was ok) for pricing consult/quote of a non-emergent water heater exchange, along with new connections, etc. While the price quote was not the cheapest compared to the others I'd already gotten, it was more inclusive of all the necessary work & needs. Jorge knew all the current rules/regulation entailed.

He was also available to do the full project right away. I felt safe in his knowledge, capabilities, & space. So yay. Project done & no potential future worries about my water heater. So, grand thanks to Jorge. Also, must say that all prior phone/online contacts were very pleasant setting up my appointment. Duncan Plumbing has a wonderful team & they clearly care for their customers & about customer service. They even called me the day after just to check & make sure all was ok. They now have a customer for life & I'll be recommending them to my neighbors & friends. THANKS!
Chris P.
May 11, 2021
The Duncan Plumbing Team were fantastic to work with in replacing our water service line. The communication and support from the very beginning to the end of the project was really impressive. They really put customers first and it showed in the whole customer experience. Their expertise, work ethic, top notch service coupled with fair price estimates is exactly what you need to get your next plumbing job done right. I highly recommend Duncan Plumbing and will certainly call next time we need help.
Jeana B.
Apr 28, 2021
Duncan Plumbing saved me from insanity yesterday! They were fast and efficient and came 20 minutes after my call! George and Ramiro wore their masks and were very professional. Anytime I need plumbing and YES it is usually an emergency they show up and do the job RIGHT! I trust their work and their work has never failed me! I HIGHLY recommend Duncan Plumbing Santa Cruz for ALL your plumbing needs!
Bryan I.
Apr 08, 2021
Rip off. they quoted me $2300 to install a new recirc pump (part normally costs $100), pressure valve (costs about $50) and another cheap valve (maybe $30). so the total parts cost was less than $200 therefore it was $2100 was for 4 hours of labor. This is on top of 45 min it took them to diagnose the issue and they charged me $320 for that! Found another guy that charged me about $600 for parts and labor.
Doug S.
Mar 18, 2021
We had a great experience with them replacing the electronics on our 25-year-old radiant system. They were super easy to schedule (including a couple of delays at our request), showed up on time, finished within their estimated window, and gave us a detailed orientation to the new controls.
Matthew E.
Feb 11, 2021
I have used them quite a few times in some emergency situations and they have always come through with a quick response time. I would say not the cheapest but I would also say plumbing is not really the best place to skimp on price. They are very responsive in the office to dispatch crews and we have used them for a leaky toilet to full-on digging up lines in the driveway to repair.
Jayna S.
Dec 19, 2020
They may or may not do excellent work once they arrive. But they made me wait through 2.5 hrs of a 3 hr time window and then said they could not do it that day, and gave no opportunity for reschedule in the near future. I understand that work may take longer than expected, and they may on a given day be shorthanded. Then offer a next-day reschedule (with definite time and discount). This is what airlines do when they overbook. Not to do this simply means sloppy business practice. Crossed off my list.
Mark S.
Nov 23, 2020
I don't like writing negative reviews, but we had a problem with our hot water heater and these guys came over and did not help, did not fix the issue and gave us wrong advice. I had another plumber come over and they fixed the problem right away.
Chris A.
Sep 22, 2019
Great service. Came out within 3 hours of my call on a Saturday. I lost all outflow from our ADU, figured it was the aging sewage ejection pump and I was looking at $3000+. Eric came out, super nice, uncovered the pump (it had been covered with gravel for some reason), and pulled out a big vine that had crawled into it and obstructed the drain. No broken pump, no ejector replacement. $300 for over an hour of digging in the hot sun. Definitely adding Duncan Plumbing to my go to list, and when the pump inevitably blows (it's over 10 yrs old), tI will call them to fix it.
Bettina A.
Jul 18, 2018
Of course our toilet started acting up on a Friday. I contacted Duncan Plumbing and got an immediate response and an excellent quote! They were at my home within hours. Nui the technician was knowledgeable and explained what was going on. It was repaired under an hour and I wasn't left broke. I highly recommend Duncan Plumbing and would 100% use them again. I even got a super sweet coffee mug