Your Local Plumber in Marin and Sonoma County

Big Island Plumbing is a locally owned plumbing company based in Greenbrae, California, owned by Glenn Lopes. Glenn and his team bring years of hands-on experience to every project, serving homeowners across Marin County and southern Sonoma County with the kind of reliable, personal plumbing service that larger companies simply cannot match. Big Island Plumbing holds California Contractors License #1090862 and is fully licensed and insured, so your home is always in capable, professional hands.

From drain cleaning and repiping to water heater installation, gas leak repair, and kitchen and bathroom remodeling, Big Island Plumbing handles jobs of every size with the same commitment to quality and transparency. The team provides upfront pricing with no surprises, uses screened and certified technicians, and stands behind every job with a service guarantee. Whether you are in San Rafael, Larkspur, Mill Valley, San Anselmo, Sausalito, Novato, or Petaluma, Big Island Plumbing delivers plumbing services you can trust.

Why Choose Us

• Licensed (CA #1090862) and fully insured — your home is protected
• No-surprise upfront pricing on every job
• Screened and certified technicians
• Service guarantee on all work
• 5.0-star rating with over 50 reviews on Google
• 5.0-star Yelp rating from Marin County homeowners
• BuildZoom score of 99 — top 15% of California licensed contractors
• BBB A+ rating with zero complaints
• Serving 10+ communities across Marin and Sonoma County

Our Customers Say It Best

• "Hands down the best plumbing company I've ever worked with."
• "It is such a relief to have Big Island Plumbing on my team."