Old Towne Plumbing
Company Overview
In the heart of Orange, Old Towne Plumbing has been delivering quality service for 30 years. Over the years, we’ve observed various transformations, but we are glad to see that the old town character of Orange and Tustin remains intact. Although advancement is natural, the quest for the latest can lead to a loss of essential values such as honesty and integrity. We continue to operate from the Old Town Orange area and are committed to upholding the principles of courtesy, honesty, and integrity.
The heart of Old Towne Plumbing lies in its people, embodied by the ""Bonham Boys"" - Karl and his nephew Ralph. With a combined experience of over 60 years, they offer unmatched expertise. Their expertise goes beyond plumbing, focusing on total customer service and satisfaction.
Karl Bonham stands out as a unique figure. He has traveled widely in the Far East, some of it at the request of Uncle Sam. He speaks Thai fluently and can communicate in various other Eastern languages. His language skills have attracted a diverse clientele, including numerous Thai, Vietnamese, and Cambodian restaurants.
Born and raised in the Orange area, Karl has a lifelong love for the city. If you live in a historic part of town and adore your house, Karl likely shares that sentiment. Who better to address your plumbing needs?
Should you spot a man on a Harley in Old Town Orange, and he takes off his helmet to show off his blonde hair, take a second glance. There’s a good chance it’s Karl. If you see him, be sure to say hi. His friendly response might just brighten your day!
Business Services
- Drain installation
- Drain repair
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- HVAC system repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Water heater installation
- Water heater repair
- Water pipe repair
Business Location & Hours
Mon: | 9:00 AM - 5:00 PM |
Tue: | 9:00 AM - 5:00 PM |
Wed: | 9:00 AM - 5:00 PM |
Thu: | 9:00 AM - 5:00 PM |
Fri: | 9:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

We had signs of a water issue about our kitchen ceiling. A bubble in the paint was starting to form. We called others but they were too busy. We called Old Towne and Carl was able to send someone out the next day. Ralph showed up promptly the next morning and found the issue real quick. He cut out the bad, copper joint that was corroded and put a new section in place. The next morning I had a knock on the door. OTP had their drywall guy repair my ceiling. The kitchen ceiling is patched and textured to match. The wife just needs me to paint the kitchen ceiling.
Thanks for the great service.

Karl and crew are my first phone call in a plumbing disaster - and my 1925 bungalow has had a few. Most recently, they ended up needing to replace a cast iron waste line (which turned into quite a few more corroded drainage pipes under the house as well) and were quick, efficient and most importantly, thorough and trustworthy. While they were connecting the new line, they noticed many of the other pipes were in disrepair, took photos, and provided recommendations on how best to proceed so I don't have to do all this over again in a few years.
I had JUST done my annual landscaping and mulch refresh the week prior, and they paid extra attention to detail to ensure my yard was put together just the way they found it.
Can't say enough about the Old Towne Plumbing guys - they are the very best!

I would recommend KARL and his EXCELLENT staff to anyone and everyone. While they may not be the cheapest they most certainly will not in way shape or form try and overcharge their customer. Not only are they excellent people and super friendly but they all have a great sense of humor and also really know how to diagnose your problem quickly find the problem figure it out come up with solutions and recommendations that will make a customer feel completely satisfied that they have made the right decision to contact Old Towne Plumbing to fix their plumbing, heating and a.c issues. While I have used them in the past and will continue to do so in the future I have failed to leave my review in a timely manner so I am doing so now to make sure that people have an idea when they hire Old Towne Plumbing what kind of experience they will have. In the past they have fixed a heating system in the dead of winter (so thankful they were able to fix) as well as other smaller plumbing issues KARL is the best owner any employees could ever hope to have hire them. Thanks for you and all your hard working staff KEEP UP THE GREAT WORK

Did a great job! Showed up within an hour of my call. Diagnosed and repaired my inoperative instantaneous water heater quickly. Were very thorough and courteous. I've used them for 18 years and will continue.

First time using their service for a heater problem and was impressed. They had a rapid response time and made sure they completed everything with accuracy.

Can't say enough glowing things about Old Towne Plumbing! We had a major plumbing crisis late Saturday morning so I started Googling plumbers in the area. The first two I called couldn't make it until much later in the day. Then I called OTP and ""Karl"" couldn't have been nicer or more empathetic with our situation. He scrambled to send one of his plumbers, Cary, to our house within an hour! Cary was the hardest-working, most committed problem-solver! He was incredible! We can now say ""we have a plumber"" because we'll be repeat customers as long as we're in their service area!

I've done a lot of business with Old Towne plumbing. This business prides themselves on customer service, honesty, and getting the job done right. They will always try their hardest to make it out in a reasonable time, but they do get booked! In very high demand, with many emergency calls, especially in the summer with A/C calls.
We have had them do work on our home in Yorba Linda ranging from re-routing some venting in our newly built laundry room, relief valve repair on our water heater, fixing our outdoor faucet that had old piping and corrosion, installing our new toilets and faucets, all the way to replacing our heating ducts in the attic. Our old ones were tiny compared to today's standards and had many crimps in them. They took pictures to show us and got the job done in a very reasonable time. We noticed more efficient and warmer heat ventilation right away! No more cold spots!
Bottom line is we trust OTP with everything from the small stuff to the big stuff! They will get the job done and have comparable rates to others. What I've learned is the structure of the company works and they collaborate on the plan. If you have a request, let them know and they'll do their best to make it happen if it's safe and plausible to do so.

We found our go to guys! We had water damage to our home and no one was able to locate the cause. We had 3 separate leak detections completed and had a geological engineer involved. I did my own search and found Old Towne Plumbing who had the technology that was recommended as well as a company that seemed to know our area and the homes well.
Within 10 minutes of being here, Carl and Anthony were able to isolate the leak to our irrigation system. I was in shock that they were able to tell me so quickly after 3 other companies could not figure it out. Carl came out on a separate day to meet with our groundskeeper to help figure out where the irrigations lines were before starting to dig and search. My husband and I were skeptical but they came out a couple days later and were able to isolate the leak. They must have had at least 10 different people here to help figure it out, bringing all their knowledge and skills together to figure it out.
Every single person from Old Towne Plumbing have been professional and kind (I've met at least 6, worked more closely with 4). Carl in particular has a ton of knowledge and experience. He has gone out of his way to help us with this issue and has been the liaison between us and our insurance company. Our insurance company is not looking out for our best interest and acted as a bully. Carl is very knowledgable of our rights and what we're entitled to as the insured, and took the time to educate us and defend us. He has taken so much time to help us with our claim.
I cannot say enough about Old Towne Plumbing. They have done so much for us and our home. We are confident in the work that they have done and the materials they used. They are an old fashioned company, using quality materials, with traditional values of integrity and looking out for their customers.

I have used Old Town Plumbing twice now. I was in a pretty steep jam with a renovation I was doing to my property. Long story short my house was left in such a mess with the previous person I had hired that I could have bulldozed the house and it would have looked better. Anyway, Carl had done some plumbing and electrical work on this house several weeks earlier. He sent one of his guys to fix a minor issue I had. When his guy noticed that there was hardly any progress since he was there those many weeks earlier he called Carl. Carl came back and offered to help me with this house. With his fantastic crew they immediately went to work and took care of so many major projects, I was left speechless. With just a few days on the job the house had new life. Carl was amazing in making sure that projects got done. Communication was never an issue. If you are stuck with a renovation and need help, call OLD TOWN PLUMBING. Carl will work with you and your budget. Give them a chance, give them a call. I did and I wasn't disappointed.Thank you Carl, Pablo, Carlos, and Eduardo. You guys are fantastic!!!!!
I highly recommend this company.

Thank you Karl & the crew for fixing our clogged sink! Great people and great customer service. They are super friendly and easy to worth with. Will definitely recommend and continue using them for all of our plumbing needs.