© 2018 by Knowles Plumbing

PL6074 | GF8346



Our construction team specialises in hydraulic contracts with our experienced team of project managers, construction supervisors and foreman – we are well structured to manage all hydraulic contracts.

Our dedicated and highly competent team work cohesively together to deliver the best results for all projects undertaken.

Our History



Knowles Plumbing was established just after World War II which makes it one of Western Australia’s longest established and still operating plumbing businesses.


Servicing the fastest growing region of Western Australia, Knowles Plumbing is one of the oldest businesses of its type in Australia, having been established just after World War II. It is an autonomous arm of the Sanwell Group.