M & M Plumbing
Company Overview
Family owned and operated with over years of industry knowledge.
M & M is a reputable local company. We prioritize your happiness. We are your all-in-one plumbing and gas installation expert. We specialize in gas appliances like hot water heaters. We also install tankless systems. We manage big jobs, but we are also here for small jobs. Reach out today for further details.
Richard and Carol McCaslin bring 35 years of knowledge in the plumbing field. Richard began with Carol's father, and later, they established their own plumbing business in California, which they ran for nearly a decade and a half. In 1990, the McCaslins moved to Olympia and shortly thereafter established their new plumbing company, M & M Plumbing.
Since the year 1991, M & M Plumbing has expanded alongside the McCaslin family. All four of the McCaslin boys have previously worked in the family enterprise. Michael, the oldest, has been with the company since he was a teenager and is now the lead technician and journeyman. Jonathan and Ryan, the middle sons, have ventured into other careers. Matthew, the youngest, has just joined the company and is now training in the family business. Meanwhile, Carol oversees the office, handles the books, and sets appointments.
35+ years of expert plumbing knowledge.
Business Services
- 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
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water purification system cleaning and maintenance
- Water purification system installation
- Water purification system repair
- Salt delivery
Business Location & Hours
Mon: | 8:00 AM - 6:00 PM |
Tue: | 8:00 AM - 6:00 PM |
Wed: | 8:00 AM - 6:00 PM |
Thu: | 8:00 AM - 6:00 PM |
Fri: | 8:00 AM - 6:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

He should remove remodel from the side of his truck. And, he should pay attention to what the customer asked for. I was clear in that we had installed a temporary pedestal sink and that the new sink needed to be installed but moved over 6 inches. His answer to that was a three hour vigil to install the sink in exactly the same place. I was chastised for not having a contractor available to cut the wall. Thus, the sink was not moved. The faucet that he installed was apparently not tested because the water ran right down onto the floor.

This review is for my Mom in Olympia she doesn't have yelp:
I am very impressed with this company. I like to support family owned businesses. The two sons came out and were professional but at the same time friendly. They explained everything they did.They put a stopper that I can remove on my sink so it can drain better and also fixed the toilet tank that was shaky. I would highly recommend them to family and friends. Thank you!

Called and left a voice message for a plumbing job I need to have someone come take a look at. 24-hours later and still no call back.

I was once again very satisfied by my experience with M & M plumbing. They did a great job fixing a leak under the kitchen sink. The fee was very fair and they were timely. I could not have asked for more!

Less than impressed with this place. I called first thing in the morning and left a voicemail that I needed my job done ASAP. They never even called me back. I called them again and was told someone would go by the house and check it out. They never showed and I never heard from them again. Obviously, not the type of business I can recommend.

I contacted several plumbers for an estimate on replacing my 20 year old gas hot water heater. Rick came out, took a look at the job, explained my options and gave me a quote. Rick was the most personal, friendly, and really knew what he was talking about. I felt very comfortable with him.
The following week he and his team came and deinstalled my old unit and installed the new one in a very short time. They took the time and effort to explain the features of the new uni. When they left, my garage was cleaner than when they arrived.
A really nice family run business. I would definitely have no issues with calling them again on my next plumbing project.

Today was the second time I've had the brothers out to fix a plumbing issue and M&M is 2-0! They not only solved the problems efficiently, but they also took the time to show me what and how they were doing it. Great guys, great advice, great service.