Nak for Plumbing
Company Overview
Greetings from Nak for Plumbing, your dependable source for every residential plumbing requirement in Martinez, CA! We strive to offer a seamless experience, fueled by our commitment to go beyond your expectations. Our skilled technicians deliver quick and dependable solutions customized to your specific needs. With a focus on customer satisfaction, we guarantee your happiness from beginning to end. Trust us for convenient scheduling that aligns with your hectic lifestyle, ensuring minimal disruption. Whether it’s routine upkeep or addressing complex plumbing issues, we deliver successful results. Discover our unmatched service and see why Nak for Plumbing is the top choice for homeowners in Martinez.
In 1989, John Nakagaki chose to leave the corporate world of banking, seeking a new direction. Welcoming this new journey, he initiated a practical apprenticeship, beginning with a drain cleaning machine. Working hard for various plumbing firms, John advanced from apprentice to journeyman, eventually becoming a lead plumber. During this decade-long experience, he perfected his skills, mastering every element of plumbing, from water lines to drain lines, gas lines, and beyond.
In 2003, with ten years of crucial experience and expertise, John started his own venture, Nak for Plumbing... After 13 years of addressing the plumbing needs of the valley, we are pleased to say Nak for Plumbing is ready to assist you. We have skilled technicians on standby because plumbing issues don’t wait for a convenient time. Whether it’s routine maintenance, burst pipes, toilets, faucets, sewer clogs, or water heater installations—remember, we have a Nak for Plumbing!
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal installation
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

I didn't end up using Nak For Plumbing (I needed more work than I was willing to do), but was very impressed with the customer service. 5 Stars is for customer service.

I have had numerous plumbing issues in the past year, including a leak under the slab. John and David are the most patient people I have ever dealt with. They are explain things so that I can understand, extremely tidy, and very trustworthy. They are always prompt and do a fantastic job, you never have to call back over something that was overlooked. Keiko is always helpful when I email or stop by with yet another request for service. I give NAK the highest recommendation.

John Nakagaki (owner) is such a great guy! This is my second time using his business for water heater issues. In 2010 he did a minor repair (replaced a thermo coupler) and he went above and beyond my expectations back then. So thoughtful and willing to explain a lot (including how to do things myself to extend the life of my water heater). Never felt like any type of up-sell of services. Fast forward 8 years to last week and I discovered my water heater sprung a leak. Panic of course sets in. I've seen plenty of videos of burst water heater tanks. Yikes! I called his business line on Sunday afternoon expecting to get an answering machine or service but even though he was closed, John answered the phone himself. He listened to the issue, gave me some comfort that I had a little bit of time based on the description of my leak. Gave me a quote for a new replacement water heater (Rheem 50 gallons). His quote was fair and given my past experience with him I asked him how soon could he come without the need to call around for competitive quotes. He said he was busy but would come at the end of the business day Tuesday to ensure my job got taken care of quickly. He sets up his appointments via email and text notifications which is pretty cool. I even got a text message when he was about to arrive at my house to let me know. He was right on time and worked well past dinner time to get the job done. His helper, Alex, was pleasant and the work was very professional. Stuck to his quote he gave me and I couldn't have been more satisfied. If you need a plumber Nak for Plumbing is the way to go. Reliable, honest and reasonably priced. Thank you John!

John from the NAK services was very helpful and professional in his manners. The job was done well and fast. I was pleasantly surprised and I would highly recommend this company.

Called them to replace a bad valve in my shower, which had already been diagnosed as bad. Technician comes, without a valve, looks at shower and tells me my valve is bad. So, he then tells ME to go buy a valve, which he will come back and install. Is there more than one kind of valve? If not, why does he not have one. If yes, how do I know what to buy? Can't imagine him being any less helpful. Paid for a worthless service call and certainly did not call them back.

Working with Keiko and John was an absolute pleasure from beginning to end. i have back issues and needed a toilet installed. I asked for a few quotes on yelp and they were the first ones to get back to me. They had specific questions about my situation and quoted rates. They also worked with me scheduling a time that worked for me. John was really great when he arrived. The work was completed promptly and the price was reasonable. I will call directly for plumbing needs in the future and recommend them to my friends.

My water went out yesterday morning, Nak for Plumbing responded immediately to my email, set up an appointment for early that afternoon and completed the installation quickly. Beautiful workmanship, John clearly takes pride in his work. Price was more than fair, he was polite and very professional. I would recommend this company highly and will never go elsewhere.

Very responsive on yelp, arrived as described, completed the project quickly and for a very reasonable and competitive price. I would definitely recommend and use Nak again.

My toilet backed up into my shower and garage sink. John came as soon as he finished his current appointment and cleared the main drain stoppage. He took time to assess the issue because my main drain actually runs to the back of the house instead of to the street! Not sure why San Ramon ran it that way. Because of this, we were unsure of what would happen and he warned me it may not clear because of the distance (over 100 ft) to the end. I appreciate his honesty. Thank goodness it cleared.

Nak is great. No nonsense and very reasonably priced. They responded super quickly to my inquiry through Yelp which was really impressive. I had him help us check an existing natural gas line on our deck (we recently bought our place) and hook it up to our new bbq. He was quick and did a great job. He had a great positive attitude which I always appreciate. I'd use him again for any plumbing needs!