Denny's House of Plumbing
Company Overview
Fresh constructions for homes and offices. Started by Marcus Dehnert's grandfather, and now a 3rd generation business.
Business Services
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Water heater installation
- Water heater repair
Business Location & Hours
Mon: | 7:30 AM - 3:30 PM |
Tue: | 7:30 AM - 3:30 PM |
Wed: | 7:30 AM - 3:30 PM |
Thu: | 7:30 AM - 3:30 PM |
Fri: | 7:30 AM - 3:30 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

At 9am, realized our water expansion tank (for radiant heating system) was spewing water on the side of our house. At 9:30am, I called Denny's (per a friend's recommendation), and they kindly offered to come out between 11-1. 10 am Fred showed up and the tank was replaced within 15 minutes. 9-10:15 from problem to solution! So kind, fast and professional. This was our first time using Denny's and it will not be our last!

Outstanding service
Great workmanship and fair pricing. No better plumber in Marin!!!!

Had a collapsed laundry drain that ran through concrete, the thought of jack hammers and trenches in our yard and garage was daunting!
Denny's Plumbing had the solution of an on-demand pump that would prevent major digging.
Installation was quick, plumber was polite, friendly, and explained the process thoroughly. Denny's staff was prompt with a bid and handled the permits.
Would definitely use them again and would recommend to our friends!

Can't say enough good things about Denny's. They replaced my water heater on short notice, did a great job, and billed less than half of what another well known plumbing company tried to charge me. I am definitely going to use them in the future for all of my plumbing needs.

Needed a tankless water heater replaced. He and his guys were great.

Fred from Denny's House of Plumbing did a great job. He is really efficient, knows what he is doing, and never leaves a mess. He installed two faucets and handles and new angle stops in the master bathroom that had been leaking for a long time, and getting worse. He noticed that the first hardware that I bought did not fit very well ... because whoever had drilled the holes in the marble had drilled them too far away from the sink. So I exchanged for different hardware that fit the sink better. Good catch, Fred, good advice. He didn't mind the little tasks like installing a towel bar and a TP holder, and he cleaned out bits of debris and pebbles from older faucets, hand showers, and shower heads so that water pressure was wonderfully restored. Fred also put in a new filter for the commercial grade water filter under the kitchen sink which had lasted 7 years but needed a new filter. DHP has been around a long time, and they have decades of plumbing experience to help you solve all your plumbing needs. Big thank you to Marcus (the owner, who is wonderful) and thanks to Nicole (who is so nice, handles the phones and the orders and scheduling) as well as thanks to Fred. I'm a happy, satisfied repeat customer.

This review is a little overdue, but a while back I was having our kitchen redone, and DHP came to the rescue (On Very Short Notice) and help us turn our water off and complete our kitchen remodel !!
Great Work !! Many Thanks
Laurence & Luiza Feyh

For over 13 years, this has the best company in my experience. Great service and price. After 36 years in the same house, all of the old cast iron had to come out and there have been many sink and toilet repairs etc. I have two buildings and they installed the newer tankless water heaters on both. Marcus is in the office and all of the workers who come out are excellent. I have tried many others over the years and Dennys has the best prices. The new thing going around is charging off of a ""menu"" which means they just charge whatever they think the average job would cost. I was charged $700 for a simple 20 minute repair (done by another company; PLP) which was outrageous. They soldered on a 15 cent solder cap. Dennys charges time and materials which is very fair and the way it was done for years. Look no further!

The Denny's team, with Marcus in the lead, did an outstanding job working with Divine Electric to install a new Genrac generator.
Professional, responsive, knowledgeable and very competent.
The 'A' team. Highly recommend them - Steve

I have lived in Santa Venetia since 2003 and have used Denny's on my kitchen remodel and small projects alike. Always courteous, reasonably priced (even for Marin) and professional in both demeanor and quality of work. Highly recommend.