When must a WA plumber submit a compliance certificate?

Major or minor decides the paperwork

Minor plumbing work is testing, maintenance, repair or replacement of existing plumbing, such as like-for-like tap repairs. Replacing a water heater or a testable backflow prevention device is always major work. Major work also includes new fixtures, sewer conversions, and installing, altering or extending drainage plumbing.

Sources[1]

Drainage diagrams and eNotice

For major drainage work that installs, alters or extends drainage plumbing, a drainage plumbing diagram goes in with the certificate. After the notice of intention, regulation 70 requires you to notify when drainage work is completed, tested and ready for inspection, and the certificate cannot be lodged before that notification.

eNotice is free to register and use, but fixture and form fees still apply, and fees must be paid before a notice is accepted. You need your licence number and the email registered with Building and Energy. A copy goes to the customer by email if you enter their address, otherwise you give them a copy.

Sources[1][2]

Automatic Mutual Recognition plumbers

Plumbers working under Automatic Mutual Recognition have their own steps for notices and certificates. Follow the Building and Energy eNotice page for those, and do not apply the registration steps above to them.

Sources[2]

Prestart and closeout checklist you can copy

This is our suggested checklist, not a Building and Energy form.

WA PLUMBING NOTICE CHECKLIST

Job and site: [address]
Major or minor? [major / minor, why]
Emergency? [yes / no]
Notice of intention lodged: [DD/MM/YYYY, time], at least 24 hours before start [yes / no]
Alternative solution used? [yes / no, notice at least five working days before]
Fees paid: [yes / no]
Work completed on: [DD/MM/YYYY]
Drainage completed and ready for inspection notified: [DD/MM/YYYY / not drainage]
Drainage plumbing diagram attached: [yes / no / not needed]
Certificate of compliance due (5 working days): [DD/MM/YYYY]; lodged: [DD/MM/YYYY]
Copy to customer: [DD/MM/YYYY, how]
Minor work recorded: [yes / no / not minor]

Sources[1][2]

Common questions

Do I need a plumbing compliance certificate?

In Western Australia, licensed plumbing contractors need a certificate of compliance for major plumbing work, within five working days of finishing. Minor plumbing work is recorded instead.[1]

How to get a CoC plumbing certificate?

The plumbing contractor lodges it through eNotice, after registering with a licence number and the email held by Building and Energy. If you are the customer, ask the plumber for your copy, which eNotice emails to you when they enter your address.[2]