Marin County

Plumber in Larkspur, CA

CNTRline Plumbing takes care of Larkspur, including the Queen Anne Victorians and Craftsman cottages along the downtown stretch of Magnolia Avenue. That historic district is on the National Register, and we treat those old houses with the care they need. We come out from our Rohnert Park shop for scheduled work and after-hours calls alike.

Local Plumber

Plumbing in Larkspur

Downtown Larkspur is full of homes over a hundred years old, and many still have their original drain and supply piping tucked behind finished walls. Up in Hillview the houses are built into steep redwood-covered slopes, which makes water heater venting and drain slope tricky. Down near Corte Madera Creek, along Riviera Circle, the low ground and old laterals lead to backups and root problems.

We handle gas line work on the vintage downtown houses where the original piping is undersized for a modern range or a tankless heater.

Neighborhoods we cover: Downtown Larkspur, Magnolia Avenue, Hillview, Riviera Circle, Baltimore Park.

ZIP codes: 94939.

Book a Plumber in Larkspur

Or call (707) 308-5599. We reply fast.

Our Services

What we do in Larkspur

Water Heater Repair & Installation

Tank and tankless. Same-day replacement for failed units.

Drain Cleaning

Clogged sinks, tubs, and main lines cleared fast.

Gas Line Repair & Installation

Leaks, new lines, additions, and gas main replacement.

Sewer Line Repair

Video inspection, line repair, and full replacement.

Faucet & Fixture Repair

Faucets, sinks, toilets, and shower valves installed and repaired.

Emergency Plumbing

Burst pipes and no-water calls, 7 days a week.

We also handle general service & repair, remodels, and whole-home repipes. Call (707) 308-5599 to ask.

Questions

Common questions from Larkspur homeowners

Larkspur is inside the Ross Valley Sanitary District, which has required a private sewer lateral inspection and a Certificate of Compliance at point of sale since January 1, 2015. The line gets camera inspected, and if it fails, repairs are due within 90 days of the close of escrow. We run the camera, hand you the footage, and price the repair off what is actually on the video.
Shut the water off at the main first, then call us. We answer 7 days a week, and after hours calls in Larkspur get sorted by how much water is moving. If the leak is contained, we will often set you for first thing the next morning instead of billing you for a midnight visit.
No, quotes are free and there is no fee to look. You get a flat number before work starts, so nobody is watching a clock. Call (707) 308-5599 and we can usually give you a likely range over the phone before we ever drive down.

Why CNTRline

Why Larkspur homeowners call us

Licensed, bonded & insured

California CSLB #1036920, serving the area since 2017.

Same-day & emergency

We answer 7 days a week and can often be out the same day.

Local to Sonoma & Marin

Based in Rohnert Park. We know the homes and the water here.

Straight answers, free quotes

We tell you what’s wrong and what it costs before we start.

Reviews

5.0

Rated 5.0 on Google and 4.9 on Yelp

Real reviews from Sonoma and Marin homeowners, on the profiles where they were left.

5.0 on Google
18 reviews from Sonoma and Marin homeowners.
Read our Google reviews
4.9 on Yelp
67 reviews and 45 job photos on our Yelp profile.
Read our Yelp reviews
Licensed, bonded & insured
CSLB #1036920. Family run in Rohnert Park since 2017, serving Sonoma and Marin County 7 days a week.
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Free Homeowner's Guide

The Sonoma & Marin Homeowner’s Plumbing Guide

Spot problems before they flood, find your shutoffs, and see real 2026 cost ranges. A free PDF, straight from a licensed local plumber.

  • 5 signs to call before it floods
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  • Real 2026 cost ranges for the big jobs

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