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Dunborough Family Business

Big Rock Plumbing and Gas is a family business owned and operated by the Gerrans family.

Mitch attends to plumbing, gas fitting and hot water systems and John does the majority of the leak detection & cable location. Together there is no plumbing job they cannot handle quickly and efficiently.



Mitch Gerrans
Plumbing, Gas, Hot Water
0430 297 012

John Gerrans
Leak Detection, Cable Location
0427 048 070



Our Story

John Gerrans started a joint plumbing business in Perth over 30 years ago. A few years later he started specializing in leak detection and quickly became known for his expertise and skills. 

In 1998 the Gerrans family moved to Dunsborough in the southwest of WA and commenced Big Rock Leak Detection. Since then, Big Rock Leak Detection has detected over 10,000 leaks and find more every day!

After working with John to learn his trade, Mitch started his own business, Big Rock Plumbing. Mitch is a licensed plumber, licensed gas fitter and leak detector, and had worked on many projects and residentiial plumbing jobs in Dunsborough, Busselton, Margaret River, Yallingup and surrounding areas.

With over 30 Years experience, you can trust John or Mitch from Big Rock Plumbing and Gass to get the job done right the first time.

Contact Mitch at Big Rock Plumbing and Gas for General Plumbing, Hot Water & Gas Fitting, Water Dainage Systems, Leak Detection and Cable Location or anything plumbng related.

Mitch Gerrans Big Rock Plumbing & Gas Dunsborough Western Australia All Domestic & Commercial plumbing services are offered including maintenance and new installations. Call us today for fast reliable service.
 0430 297 012