Commercial Plumbing & Drain Installation in Marin County, CA
Serving Marin County Commercial Properties Since 1961 & Including Excavation We Handle In-House
Commercial buildings in Marin County span a wide range of ages and construction types, and many carry aging drain systems made of materials that corrode, degrade, or fail under root intrusion over time. Hillside terrain throughout the county causes ground settling that can shift or damage underground drain lines, and older properties often need more than a repair. They need a full drain installation or drain replacement to meet current conditions and code.
Marin H2O has been handling commercial plumbing in Marin County since 1961. We provide drain installation, drain replacement, and the full range of commercial plumbing services. When a job requires excavation to access or install underground drain lines, we do that work in-house with our own equipment and licensed crew. There’s no subcontracting of the ground work. We’re fully licensed and insured, covering general engineering, general building, plumbing, and HVAC, so one team takes the project from assessment through final installation. Same-day and emergency appointments are available when possible, and estimates are free.
(415) 877-9745 Call or submit the form to request a free estimate for drain installation or commercial plumbing service in Marin County.
Common issues that bring commercial property owners to us:
- Toilet clogs and sink clogs
- Clogged tub or shower drains
- Slow or failed floor drains in kitchens, restrooms, or utility areas
- Recurring drain backups despite repeated cleaning. This is often a sign of a collapsed or deteriorated line that needs replacement, not another cleaning.
- Low water pressure
- Water heater failures
- Leaks at faucets, fixtures, valves, or shutoffs
- New construction or remodeling requiring drain installation to meet current code
Commercial Drain Installation, Drain Replacement & Fixture Work
When repair isn’t enough, we install and replace drain systems in commercial properties across Marin County. We have the equipment and training to take on large-scale drain installation jobs, and we handle every phase of the work ourselves. Depending on the property and use type, commercial drain installation may involve floor drain placement, trench drains, area drains, or a new connection to the municipal sewer system. Drain replacement on properties with existing infrastructure often requires saw-cutting concrete or excavation to reach buried lines before new pipe can be set. This is work we do in-house rather than hand off. New construction and remodeling projects requiring drain installation to meet current code are a regular part of what we do. Every job comes with a one-year labor warranty, and financing is available on select services.
We also handle plumbing fixture replacement when needed:
- Toilets
- Faucets
- Water shutoffs
- Sink drains
- Shower drains
- Spigots
- Flexible plumbing hoses
Ready to get started? Call (415) 877-9745 or submit the form for a free estimate on drain installation or commercial plumbing service in Marin County.
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“My contractor and I have worked with Marin H2O for several years, and the service has only gotten better over time. From scheduling to plumbing coordination to maintenance, the entire team is professional, efficient, and a pleasure to work with.”Marion Hill
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“Today I used Marin H2O for the first time on the recommendation of my neighbor. The plumber they sent, Franklin, was on time, professional, respectful, courteous, and did an excellent job flushing my tankless hot water heater.”Dominic D.
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“We used Marin H2O for two toilets and their installation. Franklin was sent, and we found him to be a very experienced plumber. He's reliable, engaging, quick, complete, and willing to explain details of what he was doing.”Nadine S.
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“Marin H2O is highly responsive. Our job was scheduled immediately. The staff showed up promptly, completed the installation quickly and neatly. We just got the bill, and it was a fraction of the price from another plumbing company.”Becket C.
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“Reliable, honest, and efficient! A sewer lateral leak on a shared driveway is no fun - and after interviewing multiple vendors, it was abundantly clear that Marin H2O is the way to go. Very knowledgeable and educates their customers.”Iris K.
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“It's a real pleasure to work with a group of people who are highly professional, know what they are doing, and are trustworthy and dependable. I couldn't have asked for a better outcome and experience.”Benhur M.
The Marin H2O Difference
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Local, Trusted & LicensedProudly serving our community with fully licensed, dependable experts you can trust.
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Offering 100% Free QuotesTransparent, no-obligation quotes to help you make informed decisions—always free.
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Top-Notch Customer ServiceWe prioritize your satisfaction with friendly, professional support every step of the way.
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Backed By a WarrantyQuality work guaranteed with reliable warranties for your peace of mind.
