Licensed vs Unlicensed Plumbers Perth — How to Check Before You Hire

In Western Australia, almost all plumbing work must be done by a licensed plumber — it's not just a quality issue, it's the law. Hiring an unlicensed operator can void your insurance and leave you liable for any damage.

Why Licensing Matters in WA

Plumbing and gas work in WA is regulated by the Plumbers Licensing Board and Building and Energy. Licensed plumbers must lodge a Notice of Intent and provide a compliance certificate for notifiable work. Unlicensed work can mean your home insurance won't pay out if a fault causes water damage.

How to Check a Licence

• Ask for the plumber's licence number and check it on the Building and Energy register
• Confirm whether they hold a contractor licence, not just a tradesperson licence, if they're quoting you directly
• For gas work, check they hold a separate gas fitting authorisation

Red Flags

Be wary of anyone who only takes cash, won't provide a licence number, or offers to skip the compliance certificate to save money. The certificate is your proof the work meets WA standards.

Worth the Paperwork

A compliant job protects your home, your insurance and the next owner if you sell. Always keep the compliance certificate with your property documents.