The Queensland Development Code (QDC), established by the Queensland Government, provides a building standards framework specific to Queensland, which extends the scope of the Building Code of Australia. The QDC sets out design, setback and siting requirements for Domestic Class 1a (detached dwelling house) and associated Class 10 buildings/structures (garages, carports, sheds, water tanks and pools), as well as dual occupancies - except where the City Plan identifies an alternative provision.
The QDC sets the state-wide design and siting requirements. The Redland City Plan can identify alternative and/or additional requirements where a more locally specific outcome is sought. In these cases, City Plan will override the QDC. If your proposed building work is not able to adopt one or more of the acceptable solutions in the QDC (or the City Plan where it overrides), you will need approval from Council as a referral (concurrence) agency. Read more about lodging a concurrence agency referral application.
Building applications are managed by private building certifiers. This means they are the assessment manager for the building application. The building process was changed in 1998 when Queensland introduced its own private building certification system, offering a choice of service providers. Redland City Council no longer assesses building applications. Instead, private building certifiers manage the building approval and inspection process.
You can find further information on the building approval process, including how to contact a certifier, here.