How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%90+49.1Reliability 24%90+21.8Value 14%100+14.1Replies to reviews 7%73+5.2Craft & service penalty90−1Experts Score= 89Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.89SCOREJB Plumbing
Duarte, CA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #8Position by Experts Score among all companies we track in this category. of 10 repiping services · 4.9★ from 469 Google reviews
Report card
Percentile vs other repiping services (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: replies to reviews.
Reviews for your job
Customers hired JB Plumbing for 8 kinds of job.
JB Plumbing for drain cleaning
Clear ✕All 50 Google reviews tagged “Drain cleaning” · showing 40
Always happy to do business with JB Plumbing. They are responsive, reliable and do not try to sell you extra unnecessary work. Cory arrived as scheduled this morning and took care of my kitchen sink back up quickly, cleanly and for a reasonable price. I'm so glad I found an honest local plumber after moving to the…
The staff at JB Plumbing are great! We had a plumbing issue arise late on a Friday and they were quick to answer their phone and sent a team out the very next morning. The staff they sent out were thorough and kind, as well as professional and considerate. Not only that they responded to another issue less than a…
On time, friendly, worked hard until clog was cleared, made sure there were no leaks, very clean. Awesome!
Johnny is the best excellent service and gets the job done! highly recommended. He is very knowledgeable and respectful
UPD: 5/18/26 JB came out for another job replacing the standpipe after the washing machine kept backflowing after trying to drain. Plenty of drywall cutting and other major work. Cost was exactly 1/3 of what another large plumbing company quoted me. They got right on the job, ,finished quickly and did awesome work.…
I've been in my home for over 50 years and have had a number of plumbers, JB Plumbing is my far the best I have ever used. Fair prices and excellent work from a nice religious group. Thank You and God Bless.
I love this company! Johnny is always willing to help. He and his team are professional, very kind, and respectful and they always do a great job! I highly recommend this team!
Johnny and his team go above and beyond to make sure you are satisfied and your plumbing is working smoothly! I highly recommend their services and have been using them for years - Johnny is always super fast to respond to my texts and calls and I truly consider him as a great service! From plumbing on my…
I was hesitant at the initial price. Johnny worked with me on that. I was grateful. I’d recommend he and his son as they were polite, quick, and efficient. Left no trace. I will call them again.
They came quickly, as usual, and did an outsstanding job, as usual.
Cory Belleville, came out and cleared our Shower Line Clog, Great Customer Service Clean and Fast did the job right the first time definitely using and recommending JB Plumbing for future plumbing needs
Guys were great! Showed up right away, very professional with great customer service.
Prompt and friendly nice guys
Our arrival window started with Johnny and Nick updating us every step of the way, so we knew exactly when they would arrive. When they got here, they inspected the area where we were having issues and then the surrounding are to see what else could be contributing to the issues. Once they had a total understanding…
Shaun did great work. Would definitely recommend. Timely response and very professional. Would definitely recommend
Johnny is simply the GREATEST!! He is extremely reliable. His work is without question the best.
Johnny was amazing, on time. Answered all my questions & preventative information.
Second time I used this company very happy with them. Shaun was very professional and an expert at what he does. Will be a return customer.
Sewer line repair
As always, when everything else fails. Call the best plumbing company in our neighborhood! Excellent as always!
In progress still. Great so far !
My garbage disposal broke and I also needed a clean out installed. This company stood out right away—they gave me the most honest opinion, were very knowledgeable, and offered the best price compared to others I spoke with. They worked around my busy schedule, showed up on time, and had everything done within just…
Jeff helped us with a clogged kitchen sink drain. Came out right away and solved the problem.
I highly recommend and appreciate JB Plumbing for all the work performed at my property in Upland, CA. I have been calling this company for all types of plumbing jobs for over 4 years now; including a complete re-pipe job. I am a repeat customer. They have always excelled in all aspects; including customer service,…
Kind ,helpful and very clean
Very knowledgeable honest young men that take their trade seriously!!! Job was done very quickly and with quality !!! Installed Cleanout valve and clear drain!!!
Great work! Johnny and Cam helped out really quick and was very knowledgeable. They gave me a good price without trying to sell me on anything else. Really cool guys I will definitely be referring them to everyone I know with their plumbing needs. Thank you so much for the quick and prompt service
Johnny and his crew were wonderful! Very efficient, knowledgeable and helpful....and they put me at ease. Thank you for helping me and I will definitely refer you to my friends and family ☺️ Loni Spelman
Johnny and Cameron were phenomenal—very competent and professional!
The drains on my property were not completely clogged but they were draining slowly. The drain that the washer is hooked up to would overflow in every cycle. JB plumbing showed up and gave me an estimate that was fair for the work they promised to perform. I like to watch every penny that I spend so when I say that…
Had a bad drain clog in our kitchen sink recently and Draino couldn’t take care of it like before. Our landlord reached out to JB and they sent over Aaron and Vincent. Super nice guys who were able to help us out and get down to the literal root that was causing our pipe blockage. The two techs were on time, polite, and beyond helpful!
Sean and his co-worker did a good job. It was a difficult job and they completed it in one day. Just recently I called them to repair a clear out drain for us. Johnnie and his crew did a great job.
Great service. They always answer the phone and find time quickly. Great prices too.
Since they sent me a link to review….here it is. Didn’t diagnose problem correctly but after I explained sever layout they couldn’t get their snake through clog one other their competitors cleared a week earlier. They had to use a Jetter to open drain bill was $750 but as I was desperate I was actually told $750…
Plumber was knowledgeable and courteous, performed the job promptly and efficiently.
Super fast service! Friendly service man. In and out and left a clean workplace.
Cory of JB Plumbing was polite, professional, punctual, and the price of repair was reasonable. Quality of workmanship was also appreciated and I will likely use them again.
Two very nice young men came and explained everything to me. The unclogging made a mess on my patio and they hosed it all off for me! I’ve used this company before and I recommend them highly!
Cory came out and unclogged my bathtub. He was on time and really nice. The price was reasonable. I would definitely call this business again for any future issues.
Great job - showed up on time and pricing was very fair.
Price
Bar = middle half of what customers paid · gold mark = category median.
Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| Plumbing pipe repair | 60 | $214–$1.4k |
| Plumbing leak detection | 52 | $205–$638 |
| Drain cleaning | 50 | $104–$353 |
| Plumbing leak repair | 33 | $228–$1.7k |
| Toilet repair | 32 | $56–$380 |
| Faucet repair | 27 | $39–$457 |
| Outdoor plumbing system repair | 26 | $450–$1.7k |
| Faucet installation | 22 | — |
