When must a NSW plumber issue a compliance certificate?

What the certificate says

A Certificate of Compliance confirms the work complies with the Act, the Regulation, the Plumbing Code of Australia and the deemed-to-satisfy requirements of AS/NZS 3500. It also names the plumber or drainer as the responsible person for the work.

Sources[1]

Where it goes

The certificate goes to the person who arranged the work, which may be the owner or a builder. For work needing an inspection, NSW also wants it submitted at completion, or before you arrange the final inspection, to the right regulator.

Sources[1]

The sewer service diagram is a separate document

For drainage work, a Sewer Service Diagram showing the private sewer pipes goes to the person who arranged the work and to the same regulator at completion of the drainage work. NSW sets drawing criteria and a template for it, so do not treat it as part of the certificate.

A Notice of Work is a third document. It is submitted before work starts on inspection-required jobs, with exceptions for emergency work and minor works such as replacing tap ware.

Sources[1]

Closeout checklist you can copy

This checklist is our suggested workflow, not a NSW form. Keep it on the job once the work is finished.

PLUMBING CLOSEOUT: NSW

Job and site: [address]
Work completed on: [DD/MM/YYYY]
Who arranged the work: [owner / builder, name]
Inspection required? [yes / no]
Regulator: [Building Commission NSW via MyInspections / local plumbing regulator]
Notice of Work lodged before starting (if required): [yes / no / exempt, reason]
Certificate of Compliance completed: [DD/MM/YYYY]
Copy given to the person who arranged the work: [DD/MM/YYYY, how]
Submitted to regulator (if inspection required): [DD/MM/YYYY]
Sewer Service Diagram needed (drainage work)? [yes / no]
SSD given to customer and regulator: [DD/MM/YYYY]
Photos and notes saved to the job: [yes / no]

Sources[1]

Common questions

Do I need a plumbing compliance certificate?

In NSW, plumbers and drainers must complete a Certificate of Compliance at the completion of all plumbing and drainage work and give a copy to the person who arranged it. Only work that needs an inspection has to be submitted to the regulator.[1]

Who can issue a compliance certificate in NSW?

The plumber or drainer who did the work completes it. The certificate identifies that person as the responsible person for the work.[1]