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(415) 209-8142

Leak Detection And Repair in Greater Fairfax Area

Need leak detection and repair now? Our licensed, certified technicians find and fix hidden water leaks with clear, upfront pricing. We serve the Greater Fairfax area, including San Rafael, Santa Rosa, and Novato. Homeowners choose us for screened and certified techs, fast response, and a 5.0 rating from 68 reviews. Contact us for friendly advice and a convenient visit today.

Price intelligence

How our prices compare.

vs market avg-40%
rate us fair value or better100%

What can you expect to pay?

Customer Perception

How customers feel about the bill, in their words.

Post-job survey · verified customers

SentimentBig Island PlumbingMarket avgDelta
Great Price100%19%+81 pts
Our work

Project Gallery

Clean new copper work and reliable shutoff valves showcase the craftsmanship customers trust from Big Island Plumbing.
Trust Big Island Plumbing for careful, professional plumbing inspections even in tight exterior spaces to protect your home.
Trusted on-site diagnostics and clear results from Big Island Plumbing show our commitment to professional, reliable plumbing inspections.
Why us

Why Choose Us

Licensed and insured

Our entire team is fully licensed and insured.

Certified technicians

Screened and certified technicians on every job.

Upfront, no surprises

Clear, no surprise upfront pricing on leak repairs.

Local expertise

On-time arrivals and reliable service across Marin and Sonoma.

Top-rated service

5.0 rating from 68 reviews.

Social proof

What Our Customers Say

5.0
professionalism

“They come on time, fairly priced and make the extra effort to explain what and why.”

5.0
quality

“Efficient, fast, super professional and they really cared. High quality work.”

5.0
speed

“They came out with a camera, showed me exactly what was going on, and got it done fast.”

Got questions?

Frequently Asked Questions

The best way to fix a leaking pipe fast is to shut off the water, control the spill, and apply a temporary patch until a plumber completes a permanent repair. Most quick leaks come from worn valves, loose fittings, or a cracked section that needs proper replacement rather than tape-only fixes. A clamp or self-fusing silicone wrap can buy time only if the pipe is clean and depressurized. If you smell gas, leave the area and call your utility before doing anything else. Big Island Plumbing can locate the source, make the necessary repairs, and test the system thoroughly so the line is safe. We handle these repairs across Marin County homes, including the Lucas Valley-Marinwood area.

Do this right away:

  • Close the nearest shut-off (or the main) to stop flow.
  • Open a lower faucet to relieve pressure and drain down.
  • Dry the pipe, then apply a pipe repair clamp or self-fusing silicone tape.
  • Place a bucket and move items to prevent water damage.

If water reaches electrical outlets or a water heater, treat it as urgent and call a licensed plumber.

Updated: 2026-09-05

Need help in Lucas Valley-Marinwood, CA? Call (415) 209-8142 or book online.

Learn more

Helpful Resources

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San Rafael Plumbing: Leak Detection & Repair Without Major Damage


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Where we work

Where We Work

Fairfax

CA

Rutherford

CA

Tiburon

CA

Timber Cove

CA

Villa Grande

CA

Lagunitas

CA

Geyserville

CA

Larkspur

CA

Lagunitas-Forest Knolls

CA

Monte Rio

CA

Ross

CA

San Geronimo

CA

Sausalito

CA

Fulton

CA

Larkfield-Wikiup

CA

Forestville

CA

Cobb

CA

Kentfield

CA

Strawberry

CA

Calistoga

CA

Boyes Hot Springs

CA

Petaluma

CA

Rohnert Park

CA

Sereno del Mar

CA

Glen Ellen

CA

Occidental

CA

Calpella

CA

Sonoma State University

CA

El Verano

CA

Healdsburg

CA

Middletown

CA

Bodega Bay

CA

Deer Park

CA

San Rafael

CA

Tomales

CA

Valley Ford

CA

Dillon Beach

CA

Lucas Valley-Marinwood

CA

Eldridge

CA

Cloverdale

CA

Pope Valley

CA

Saint Helena

CA

Bodega

CA

Windsor

CA

Bloomfield

CA

Hidden Valley Lake

CA

Woodacre

CA

Camp Meeker

CA

Oakville

CA

Penngrove

CA

Sebastopol

CA

San Anselmo

CA

Cotati

CA

Sleepy Hollow

CA

Cazadero

CA

Belvedere Tiburon

CA

Carmet

CA

Greenbrae

CA

Guerneville

CA

St. Helena

CA

Santa Rosa

CA

Graton

CA

Sonoma

CA

Jenner

CA

Mill Valley

CA

Salmon Creek

CA

Duncans Mills

CA

Novato

CA

Petaluma Center

CA

Kenwood

CA

Rio Nido

CA

Angwin

CA

Fetters Hot Springs-Agua Caliente

CA

Marin City

CA

Ready when you are

Schedule service today with Big Island Plumbing.

(415) 209-8142