Dan Underhill Plumbing
Company Overview
Pipe specialist, drainage solutions, emergency plumber, immediate plumbing help, water leak, blocked drain, sewer back up, water heater repair, hot water maintenance, leak detection, commode, waste disposal unit, tap.
Dan Underhill is a seasoned plumbing professional since the 1970s, while also a graphic artist since the mid-50s. Our company was started by this plumbing business within the Mission District of San Francisco prior to shifting to Pacifica during the year 1993, where he still continues to provide skilled plus efficient assistance to the Pacifica community.
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line 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: | 9:00 AM - 5:00 PM |
Tue: | 9:00 AM - 5:00 PM |
Wed: | 9:00 AM - 5:00 PM |
Thu: | 9:00 AM - 5:00 PM |
Fri: | 9:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

There are not enough super things to say about this plumber! I had an emergency -- a nonfunctioning toilet in a one-bathroom home and he responded immediately! It turned out there was mud in the tank of the toilet from work the Water Dept. was doing on the street and he got the pipes roto-rootered so they worked perfectly! I mailed him the receipt later to add an explanation of the Water Department being at the source of the problem, so that I could file a claim with the City for reimbursement, and he wrote a clear explanation on the receipt and mailed it back to me, also instantly. He is good-natured, skilled, and super responsive. Highest recommendation!!

Dan was very responsive to my call in the evening after a failed attempt to hook up a laundry center earlier that day, due to old hook-up water valves that wouldn't turn and so needed to be replaced.
Dan came out promptly the next morning, saw what needed to be done, fetched the parts and replaced them all in under 2 hours.
He was so friendly and engaging and thorough, I wouldn't hesitate calling him again.

We had an emergency plumbing situation come up late on a Friday afternoon. After making numerous phone calls to every plumber in the book, where nobody was able to help us (if they even answered their phones), Dan came and saved the day. He fixed our connector to the water main that evening, and charged a very reasonable price. Would not hesitate to use him again.

He was great.. Unclogged the shower, reasonable rates and personable. Calling again to do another job

Dan was so nice but he was up to his ears and couldn't help me. He gave me 3 other people to try and that is so nice. Dan was recommended to me by Mike at CalStar plumbing and Mike is the person I've used for years but because Mike is hurt he recommended Dan. Dan and I spoke and he is the nicest person, I would totally recommend him.

I always feel comfortable calling Dan. He has great integrity. He recently suggested I explore another (free) option, rather than pay him for the work I needed done. He also offered me advice on how to stop a leak, rather than making an unnecessary trip and charging me for it.
We are lucky to have this man in our community!

Dan is kind, thoughtful, and a great plumber. Fixed three of our drains in an hour. Was very flexible with timing, easy to get a hold of, and gave good tips for keeping our drains cleaner. He even drew me a picture of the optimal drain guard. Was even understanding about the inevitable lack of parking in my neighborhood. Thanks!

Dan is amazing: reliable, trustworthy, honest, knowledgeable -- and quite a character to boot. I have relied on him for years, just had an emergency with an ancient hot water heater, called, and he had a new one installed a few hours later. I was also surprised that I paid LESS than I paid (someone else, before I found Dan) to have one installed about six years ago. I learned the hard way that ntrustworthy or unskilled plumbers can do a lot of damage. Choose carefully!

Dan is consistently great at returning calls and being on time, unlike some of the other plumbers I've dealt with. He even called me at 8:15am to confirm that he would arrive around 9.
He installed my new toilet in less time than was estimated, which is always great.
He also warned me of potential issues with my lead pipe, but didn't try and pressure me into expanding the scope of the job.
Dan also installed a hot water heater for me 6 years ago. I've never had a problem with it. (Thanks Dan!)
I would highly recommend Dan to anyone.

For the first time in years I had an easy time resolving a plumbing issue. Dan was on time, reasonable priced and an awesome guy! Thanks Dan!