There has been confusion in the industry about whether a Form 4/4A is required for backflow prevention devices.
A licensee is required to lodge a Form 4/4a if they install, replace or remove a testable backflow prevention device (refer to category 8 of schedule 2, Standard Plumbing and Drainage Regulation 2003).
A licensee is required to lodge a Form 9 with the Local Government Authority (LGA) every time they test a backflow prevention device.
If you engage a builder to build an extension on your property, which includes a bathroom, the builder will employ a licensed plumber to perform the plumbing and drainage work.
On completion of the work, the plumber lodges a Form 4 with the QBCC and must provide a copy of the notice to the builder. As the property owner, you may also contact the QBCC to access a copy of the Form 4.