The Leading Plumbing Company of Choice for Properties Across Oakland, Berkeley, Orinda, CA & the Entire Bay Area

When plumbing problems disrupt your home or business, you need a trusted team that responds quickly and delivers lasting solutions. Harry Clark Plumbing Inc. has provided reliable plumbing services throughout Oakland, Berkeley, Orinda, CA, and the surrounding Bay Area communities for more than 46 years. From routine plumbing repairs and drain issues to complex sewer repairs, our experienced plumbers have the knowledge and equipment to keep your plumbing system operating efficiently.

Whether you’re planning a tankless water heater installation, need prompt water heater repair or replacement, require professional sewer line repair, leak detection, drain cleaning, fixture installation, or general plumbing maintenance, we’re here to help. We take pride in providing honest recommendations, quality workmanship, and dependable customer service on every job.

Contact us today to schedule your plumbing service, request an estimate, or learn how our experienced team can help keep your plumbing system running at its best.

Trust Us for Sewer Repair, Water Heater Installation, & Other Plumbing Services!

Our team at Harry Clark Plumbing Inc can provide several plumbing services for your residential or commercial properties. Our plumbing services include sump pump repairs or replacements, replacing pipes, gas line repairs, hot and cold-water piping, toilet repairs, unclogging drains, and more. We understand the urgency involved when it comes to plumbing services of any kind and the satisfaction of our customers is a top priority! We hope you choose us when you are looking for assistance with plumbing services.

Sewer Repair

You may not always consider your plumbing or sewer needs, but you always want to think about your sewer before you need to. Schedule your regular sewer inspection and service with Harry Clark Plumbing. If your property in the Oakland or Berkeley, CA area requires plumbing or sewer repairs, we can handle those too! Many local sewer repairs require replacement of the pipes: this can be a hassle, but we have the skills and experience to conduct your repairs with minimal disruption to your property. We install trenchless sewers that are easier to maintain and operate more efficiently, with less chance of failure over the life of the system. Contact us today to learn more about what we do or to schedule sewer repairs in the Oakland and Berkeley, CA area!

Heat Pump Water Heaters

Tank/Tankless Water Heater

Drain Cleaning Stoppages
Hydro Jetting

Plumbing Repair & Service

Toilet Repairs

Gas Line Repairs

Trenchless Sewer
Replacement Sump Pump

Hot & Cold Water Repiping

Plumbing Tips

Drain Cleaning Made Safe & Sustainable

5 Common Plumbing Problems

Plumbing Tips

What are Hybrid Water Heaters?

Serving Oakland since 1946, any plumbing needs our expert plumbers have you covered.

Harry Clark Plumbing is here to take the pain out of your plumbing needs. We provide prompt and courteous residential and commercial plumbing services to the Oakland and Berkeley, CA area and beyond. Our technicians are experienced and ready to handle any situation that arises, and we only use quality products like domestic made pipe and fittings.

Gerald F

"Excellent Customer Service!"...

Lisa B

Fantastic. Practical, knowledgeable — and reasonably priced! Bradley was here twice today and couldn't have been more helpful.

Jason M

I can't say enough good things about my experience with these folks. My AC mini-split wasn't working so I called Moore Mechanical to fix it as they had installed it. They quoted me $3800 to fix it which chatgpt said was outright criminal. My friend referred me to Harry Clark and they did the job for less that $500. They are efficient, responsive and above all not out to gauge you. Bravo.

David E

One of the few that offers emergency service on the weekend - pricey but well worth it after a major flood from a burst supply line. One of the co-owners came within a few hours and did a follow up on the next business day.

John J

I've been using Harry Clark Plumbing on and off for over 10 years. We have a restaurant on Broadway, which is right up the street from Harry Clark. Our water heater rusted out on us, and we had to shut down on a Friday. For restaurants, that's no bueno! I drove to Harry Clark in the Morning and Brad (one of the owners) was there working. I explained my situation, and he jumped on the project immediately. Our water heater is big and expensive, and is mounted 4 feet up on the wall and into the ceiling. He came over with his dad and had a new one up and running in 5 hours! This was the fastest and cleanest install I've seen. I'm still impressed with how they managed to remove and install a 400# water heater halfway into the ceiling in just 5 hours. I never write reviews, but this deserves a shout-out. It's nice to know we still have businesses that care bout what they do.

Duane A

Too bad I can't give six stars...they are that good. On Mon AM the Harry Clark dispatcher called me in response to my Saturday plea for help via their website. It was a weekend then; so they were closed. But they contacted me first thing that Mon. At 1215 that same Monday, a Harry Clark rep knocked on my door and went off to find out why my hot water heater was no longer heating my water. Took him, maybe, five minutes to find that the computer that controls the heater was malfunctioning ...sending all sorts of error data. The heater needed replacing. I opted to replace it with the same type I already had, but upgraded. I also opted to replace the 24/7 recycle pump with one that would be on only from 7AM to 9PM. That reduced the amount of gas burned during the low usage hours. About two hours later, four Harry Clark trucks and a team of plumbers were removing the old heater and installing the new one and its recycle pump. In about four hours the new hot water heater and pump were up and running. In sum, from when I got the first call that AM until the Harry Clark crew packed up and left me with a heater replacement was about eight hours. In addition to being extraordinarily fast and efficient, they were always communicating with me. Kevin, the job foreman, constantly kept me apprised of what they were doing and what came next. These guys are good...highly recommend them. NOTE: they don't do weekends; so they're not good for emergency repairs over the weekends.