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    Kratzer Plumbing

    4.9 (216 reviews)
    Open 7:30 am - 5:00 pm

    Services - Kratzer Plumbing

    Plumbing inspection

    Kratzer Plumbing Photos

    Recommended Reviews - Kratzer Plumbing

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    Reviews With Photos

    Jeff A.

    We had a corroding hot water supply line under a sink that we wanted to replace. Unfortunately we have galvanized pipes, and Lee was worried that working on the top part under the sink could actually cause something to break down under the house. He suggested that we get all the galvanized (very old galvanized from 1956!) replaced with copper, not a job he actually does so this was not an effort to up sell us. We have used Kratzer plumbing before replace a hot water heater, and we were happy with their work so that's why we had them back. Because he did not perform any plumbing work, he chose not to charge us. Talk about honesty! I will call Lee back every single time from now on!

    Well, it all started when the shower handle broke off ...the stem actually broke! I didn't even know that could happen. To top it off, it was Dec 31! After calling a few places we were fortunate enough to find Lee. He understood the issue and was able to replace the shower cartridge even though there was no stem left to pull on. Great knowledge and skill, appreciate the great service!

    Lee snaking our clean out.

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    6 years ago

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    3 years ago

    The best plumber you can get. So patient, experienced, easy to work with. Can't recommend enough!

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    6 years ago

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    6 years ago

    Lee is very responsive and honest and does good testing of the issues. Highly recommended!

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    6 years ago

    Professional, knowledgeable, and quick! Glad to do business locally especially when it is high quality.

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    8 years ago

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    6 years ago

    Our go to plumber! Informative, reliable and capable. You cannot go wrong . Lucky to have found him!

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    Page 1 of 6

    Ask the Community - Kratzer Plumbing

    I was just wondering how much it would be to replace the wax under a toilet that is leaking water from the side?…

    Hi Vickie, for a regular wax seal install the cost is about $230. I charge $200 per hour with a one hour minimum plus any parts. The wax ring is $8, new brass bolts are $8, new flexible supply line $12, bolt caps $2. In most cases this job only… 

    Anyone know the actual phone number here? Every time I try to call it goes to EJ plumbing? Thanks!

    Hi Kelley, we were closed for the week and had the phone forwarded to EJ. Our phone number is 650-279-1834. We are closed weekends and respond to text. We are a one man shop and are typically booked 3-4 days out

    Install new toilets and gets rid of old ones?

    Yes, Lee does that. He installed a new toilet for us, and even advised us on which models to purchase, in terms of reliability/performance - talk to him before you buy! He was very meticulous and very careful to keep our house clean. He will… 

    View All 4 Questions

    Review Highlights - Kratzer Plumbing

    Luckily, Lee had a last minute cancellation so he was able to come later that afternoon and fixed the issue in 2.

    Mentioned in 137 reviews

    Read more highlights

    #1 Honest Plumber - Before

    #1 Honest Plumber

    (333 reviews)

    I bought a new home and needed to replace all the crumbling, leaking cast iron pipes with PVC. I…read morecalled around and finally landed on Honest Plumber given its great reviews. I gave them a call and apparently Eddy had recently broken his wrist so he couldn't personally come out and see the property. Jorge, who works with him came out and did a thorough investigation of the place and provided a quote comparable, to the competition. The reason I went with these guys was Jorge impressed me with his attention to detail and thoughtfulness. He explained how pluming worked to me, potential issues with my setup that won't be addressed, what I need to watch out for. I felt like all the steps he laid out were reasonable and I knew very well the quirks with my particular system afterwards. Nothing much to talk about regarding delivery - prompt, on budget, on time, did everything that was promised. I'm no pluming expert, but didn't notice anything out of place from a cursory view. Didn't notice any leaks a couple days later. For future jobs, I'll still reach out to these guys. Hopefully it'll be for something smaller than overhauling my entire sewage system...

    Highly recommended!…read more I needed help to finish a botched faucet removal and replacement done by a previous plumber (i.e., yours truly!). The job was complicated by 16 years of rust and hard water and pre-existing terrible cracked granite countertops that hadn't been sealed and protected well at all around the faucet area. Eddie was able to schedule me within 48 hours of my call and Jorge from #1 Honest Plumber showed up ready to go. He inspected the issues with my sink and gave me an extremely reasonable flat-price quote to do the work. I agreed and then watched as Jorge did a skillful surgery to excise what remained of the old faucet, patched up my terrible granite like a dentist would patch up a cavity, and installed and tested my new faucet and soap dispenser. Jorge was polite, friendly, professional, efficient, tidy, careful and didn't even roast me for my ham-fisted attempts at DIY work before he showed up. It doesn't get much better than that! Thanks, #1 Honest Plumber team. You guys had my back and I will 100% call you back again when I get in over my head on a plumbing job.

    San Jose Drain and Main - Pressure reducing valve and main water shutoff installation

    San Jose Drain and Main

    (997 reviews)

    Rose Garden

    Giovanni was absolutely amazing! My kitchen drain stopped working and my sink was completely…read moreclogged. What I thought would be a small, quick fix ended up turning into a much bigger project, but Giovanni was incredibly patient, thorough, and committed to getting the job done right. He took his time, never made me feel rushed, and genuinely cared about finding a solution. On top of being extremely knowledgeable and honest, he's also hilarious, he had me laughing throughout the whole process! I highly recommend Giovanni to anyone who needs plumbing work. It's hard to find someone who is honest, reliable, patient, and genuinely takes pride in their work. If you have any plumbing issues, call Giovanni, you won't regret it!

    ​I had a leaking outdoor main water riser that needed a full 2-inch valve replacement--not an easy…read morejob. Out of the 4 plumbers I contacted on Yelp, he was the only one who took the time to discuss all the technical details with me beforehand and make sure everything was planned right. ​He came out and did an incredible, high-quality job. The new setup looks very clean and beautiful, and he even corrected the tension issues on both the 2-inch and 1-inch lines to ensure long-term reliability. His pricing was completely fair, transparent, and honest throughout the entire process. ​He is definitely going to be our first-choice plumber from now on, and I'll be recommending him to all my friends and neighbors. Highly recommended!

    Kratzer Plumbing - plumbing - Updated September 2026

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