Mike Diamond
Company Overview
With over 40 years of experience, Mike Diamond Plumbing has been dedicated to serving the greater Los Angeles and Orange County communities. The knowledgeable plumbing team at Mike Diamond is available year-round to address any plumbing, drain cleaning, or HVAC issues your family may face. When you call the Smell Good Plumber, you can count on timely arrival, thorough preparation, and a job done right, guaranteed. For issues like a clogged sink, a toilet that won’t flush, or the need for a new water heater, contact us anytime for 24-hour plumbing emergencies that can’t wait.
Business Services
- Drain repair
- Electric inspection
- Electric installation or replacement
- Electric repair
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- HVAC installation or replacement
- HVAC system repair
- Light fixture installation
- Outlet repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe repair
Business Location & Hours
Mon: | Open 24 hours |
Tue: | Open 24 hours |
Wed: | Open 24 hours |
Thu: | Open 24 hours |
Fri: | Open 24 hours |
Sat: | Open 24 hours |
Sun: | Open 24 hours |
Recommended Customer Reviews

Notice these guys are still trying to hire people with bad reviews. It will be difficult to get people to work there with nasty folks answering the phone in HR. They are not professional, and you can best believe once you get started you will find every reason to run out the door. It is pretty obvious. Something is terribly wrong.

First of all - not $99. Was quoted $200 for a simple bathroom sink clog.
Then when tech showed up, he said $220 because he was going to take off a piece of the pipe. Only after my Niece looked in and said ""oh you are not taking off the pipe?"" did he say no need and will only charge the $200. When paying he asked if I wanted a warranty, which would cost more!! So they can
only guarantee their work to the extent that you are willing to pay.
Did not get close enough to see if he smelt good as I figured if the ad was lying about the $99, they might be lying about their guys smelling good.

Requested service with a window of time between 1-4 PM, was called by the technician at 3:15 saying they were on their way. Waited two hours and they're still not here. Will not be utilizing this company again and don't recommend.

I recently called Mike Diamond (MD) for a blocked toilet. The invoice for my work order is 2484293. I have a 2 story house and the bathrooms are one above the other. The upper toilet was not able to flush, but the lower one worked fine. Anyone with a brain can tell that there was a blockage in the drain pipe between the two floors. I called Mike Diamond and eventually a truck showed up with a ""mentor"" and a student. I told them that I had run a toilet auger into the pipes and that it did not clear the blockage. The ad for MD says they will unstop any drain up to their 30 foot rooter, but they would not run a snake into my pipes. I showed them the cleanout on the side of the house, but they said it wouldn't work. Instead, they supposedly called their manager and told me that they would have to destroy the sheetrock walls and create a new ""cleanout"" so that they could open the pipe to the toilet. All this for $1400.
The bottom line is, they never tried opening the pipe, even when I showed them the access to the main line. After waiting around for a while, (1.5hrs), they left.
I called another plumber that I am familiar with. I own a rental condo and the condo association is familiar with this company. Anyway, he came over and cleared the line from below using a 30 foot snake. He charged $240 but it worked and so far both toilets flush great.
I don't claim to know everything, but I do know when I see a money grab. MD could have cleared the line, the same way the other plumber did, but they went for the $1400 money grab. I find it sad that there are people out there trying to take advantage of ignorant people, but if I were you, I would at least consider a second opinion.
I'm not naive enough to realize that businesses need to make money, but I want people to know that these commercials advertising $80 drain clearing are bait and switch tactics. Most people today are poor and they just want things to work. Please don't take advantage of them.

They were good a long time ago, but now, every $99 drain clean will come with dire recommendations that will cost $2000. Different drains, different problems with the same cost to fix. The last time, the plumber threatened that the drain clean took more than 20 minutes to clear and if he had to come back, he would charge to replace the whole thing. Yes, about that price. Needless to say, we will not be using them anymore and we have been long-time customers for at least 15 years.

Feeling ripped off by Mike Diamond Plumbing. We had a service call to diagnose a toilet problem. They sent two plumbers, they were both nice as can be and knowledgeable. In the end, they replaced the fill valve. The charge was $500. After they left, I went online and saw that it's a $25 part. While I respect the service plumbers offer and understand the cost of doing business, I feel that being charged $500 is exorbitant and out of whack. I called after and spoke to a supervisor to try and get a better understanding of the markup. He wasn't helpful, didn't offer a credit for future service or anything else for that matter. We will NOT use them again.

if i could give negative stars, i would. they gave us a 8k quote for putting an underground gas line in. after a little thought, i realized it was less than 1 day of work. they blamed it on parts cost, so i asked for an itemized quote. god knows what 4-5 people were doing at our driveway, but i guess they thought more people was more convincing for us to accept the insane price. i then quickly looked at their yelp rating and realized that i should not be hiring them. i then told the plumber who does the work to not to bother to finish the quote. however he insisted on finish it, but that was a waste of everyone's time.
after a little research and talking to a local plumbing supply house, got a couple 5* plumbers to come in for a quote. accepted a $1.8k quote to do the job after i had my gardener dug the ditch for $800. the gas line job was done in 3 hours by 2 people with bubble leak check and tracer line etc.
what a joke $2.6k vs. $8k.

We called Mike Diamond for a leak under our kitchen sink. They told us their technician would be here between 8 and 10am and Sage showed up at 8:10. He was very polite and professional, explained everything he was doing and had the leak fixed within an hour. The charge was $97 and we are very happy with Sage and Mike Diamond.

Do not call this company! They will rip you off! Quoted me $571 to replace a simple 1/4 in water valve for a ice maker. If the job was more involved $1,000. We paid the $96 service call and sent him on his way. Called another company. Ended up we did require the more involved repair but this company only charged $350! The technician at Mike Diamond should be a salesman...insisted that every company will charge this. Learned a valuable lesson to call around and get other estimates. It will save you lots of money.

Ok this place is full of crap. To replace and install a garbage disposal is over $900. If I had my own garbage disposal replacement it would still be $500. So they try to sell a garbage disposal that I can get from Home Depot for under$150 for $400 plus. This company is a con from beginning to end. Stay away.