Welcome to 

Mason Plumbing, Inc.

remodel | service & repair | sewer & drains

Choose Mason Plumbing, Inc.

Servicing Marin County

Mason Plumbing, Inc. has been servicing all of Marin County since 2003.

Residential & Commercial

Find out the best Residential and Commercial plumbing services we offer.

Sewer & Drain Experts

We are one of the leading Sewer and Drain Plumbing experts in Marin County.

Water Conservation

The best way to conserve water is with hot water recirculating pumps and high efficiency toilets.

Get Help Fast

We strive to help you as soon as possible often within hours of your call.

Trusted Team

You can trust us for your plumbing needs when you're having a large or small issue. Count on us! We guarantee our work.

Locally Owned and Operated

As a locally owned and operated plumbing company in Marin County, we understand the power of good customer service. We stand behind our dedication to ensuring that your plumbing system is well-maintained, and that it’s done safely, affordably, and ethically. Our technicians always strive to offer you honest, accurate advice on how to repair your plumbing. That’s a statement we stand behind.

Mason Plumbing, Inc. servicing Marin CountyClick here to see one of our videos about who we are and what we can do for you.

Plumbing in Marin County, CA

Mason Plumbing, Inc. has been proudly serving the residents and businesses of Marin County for many years – and we aim to keep doing so for many more. Our customers come to us because they want efficient, affordable, and reliable plumbing repairs. But not only that, the want to be treated with respect and courtesy, and we make sure to do that at the bare minimum. As professional plumbers, we understand that our customers are our lifeline, and through your good words and referrals, we are able to continue providing our local community with the best plumbing repairs their money can buy. Whether your plumbing problems are big or small, we have the tools on site and the manpower required to fix them. If you’re a homeowner or business owner in Marin County, California, then you need to call Mason Plumbing, Inc. first for all of your plumbing installations and repairs.

“At Mason Plumbing, Inc. we are dedicated to providing our customers with the highest level of honesty, integrity, and professional service.”


Cameron Mason President & CEO

The MPI Team

A true mom-and-pop company, Mason Plumbing, Inc. was started by Cameron Mason and his wife, Kamber back in 2003. From the beginning they knew what set their business apart – integrity. They wanted to give their absolute best service, on time and on budget. Over the years their desire to treat people fairly and do good work built the foundation for the successful plumbing business they continue to run today. The team has grown over the years, but Cameron and Kamber ensure that their employees share the same values of treating people kindly and fairly, while giving the best plumbing service and repairs. “Our goal is to build long-term relationships with our customers, and the best way to do that is to provide them with excellent service that exceeds their expectations. We have a deep connection to the communities we serve, and we’re committed to providing plumbing help whenever it’s needed.”
Cameron Mason, CEO

Our Services & Warranty

How exactly can our plumbers help you to maintain a functional and efficient plumbing system? Here are just a few of the services we regularly offer:

  • Leak detection and repair
  • Sewer line repair
  • Drain cleaning
  • Toilet installation and repair
  • High efficiency upgrades
  • Water conservation tips
  • Water heater installation
  • Line locating
  • Video camera inspections
  • Kitchen and bath design by Kamber Mason Design
  • And more

The Mason Plumbing, Inc. warranty includes factory warranties on company-supplied materials and a 2-year labor warranty on plumbing installations.

Our Service Area

We are proud to serve Marin County, California. If you live or work in Marin County then we can definitely be your plumbing company.

  • Corte Madera
  • Fairfax
  • Greenbrae
  • Kentfield
  • Larkspur
  • Mill Valley
  • Novato
  • Ross
  • San Anselmo
  • San Rafael
  • Sausalito
  • Tiburon
  • Areas of West Marin