Mon–Fri 7:30AM – 5:30PM

Expert Leak Detection Services Novato, CA

Leak detection services from trained experts. Schedule service today! Free estimates and same-day service available.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
Fast & ReliableService

Our Services

  • Water Leak Detection
  • Gas Leak Detection
  • Slab Leak Detection
  • Foundation Leak Detection
  • Ceiling Water Leak Detection
  • Wall Leak Detection
  • Slab Leak Repair
  • Water Leak Repair
  • Gas Leak Repair
  • Foundation Leak Repair
  • Ceiling Water Leak Repair
  • Wall Leak Repair
All Novato services

Our Reviews

★★★★★
4.8 out of 5
Based on 1,224 Google reviews
Read our reviews

Why Choose John Owens for Leak Detection Services Novato

Since 1986, we’ve helped homeowners throughout Novato with gas and water leak detection through straightforward advice and professional workmanship. Whether it is locating a leak behind shower wall or installing the best water leak detector for your home, we have the training and resources to help.

  • FAST Aqua M300 professional leak-detection system, a 3-in-1 acoustic geophone, hydrogen tracer-gas detector, and pipe locator, the same premium tool water-utility crews and municipal contractors trust
  • Our technician trained in person at the FAST factory in Southern Germany, and the M300 carries 256 adjustable noise filters plus Pyramid Mode to cut through street traffic and background noise
  • More than 30 years operating professional leak-detection equipment, and a family business licensed (CA #501853) and bonded since 1986
  • Marin-based crews who know Novato housing, from slab-on-grade tracts in Ignacio and Pleasant Valley to the waterfront plumbing runs in Bel Marin Keys
  • Non-invasive detection that pinpoints the exact spot first, so any repair stays small and targeted instead of guesswork demolition
  • A 4.9-star Google rating from Marin and Sonoma neighbors, with upfront flat-rate pricing and a written diagnosis before any work begins

Signs You May Need Leak Detection

  • Water bills suddenly increase
  • Water meter runs while fixtures are turned off
  • Warm spots on flooring
  • Wet drywall or ceiling stains
  • Low water pressure
  • Musty smells or mold growth
  • Water running sounds inside walls
  • Wet areas in the yard
  • Foundation moisture or unexplained dampness
  • You suspect a hidden gas leak

Frequently Asked Questions

What kinds of leaks can you locate?

We locate slab leaks, underground water line leaks, gas leaks, radiant heating leaks, and many other hidden plumbing leaks.

Will my home have to be opened up to find the leak?

Our goal is to accurately pinpoint the leak before any demolition begins by using advanced video leak detection technology. Once it’s located, we’ll explain exactly what access is needed for the water leak repair.

Can you repair the leak after finding it?

Yes. After locating the leak, our licensed plumbers can discuss your gas, water, or slab leak repair options.

Do you work on older homes in Novato?

Yes. Our water leak detection company regularly works on older homes with aging plumbing systems and understand the unique challenges they can present, like water leak under concrete slab.

What should I do if I smell natural gas?

Leave the area immediately, avoid flames or sparks, and contact your gas utility. After the area has been made safe, we can inspect your gas piping. You can also have gas leak sensors installed to help with this in the future.

Do you have experience with Eichler homes?

Yes. Our team has extensive experience working on Eichler plumbing systems and radiant heating systems throughout Novato. We specialize in areas such as slab leak detection services for Eichler homes.

Why is my water bill suddenly so high if I don’t see a leak?

It could mean you are dealing with a silent leak. Toilet flappers, irrigation systems, and underground pipes are all areas where hidden leaks can occur.

Can you locate a water leak under concrete without digging?

Of course! With tools like acoustic listening devices and thermal imaging cameras, we can locate hidden leaks beneath concrete slabs.

What equipment do professional leak detection companies use?

Acoustic listening devices can pick up sounds of a leak that the human ear can’t detect. Thermal imaging leak detection cameras are used to locate leaks underground. We also use the FAST Aqua M300 that can use tracer gas leak detection, acoustic technology, and pipe location.

Proudly Serving Marin & Sonoma

From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.

Ready to Get Started?

Schedule service with our trusted local team today.

Serving Marin & Sonoma Counties

Good plumbing, heating, and air conditioning systems are vital in every North California home. John Owens Services, Inc. is proud to be the expert plumbing company you can count on