Duplex and Dual Occupancy Certification

Assessment and issue of CDCs for dual occupancy developments under the Low Rise Housing Diversity Code of the Codes SEPP, checking compliance with all development standards including minimum lot size, building height, setbacks, deep soil zones, communal open space and car parking.

Issue of Construction Certificates for DA-approved dual occupancy projects, with BCA/NCC assessment covering both dwellings and any shared elements such as driveways, services and fire separation walls.

Fire separation assessment between attached dwellings, ensuring the separating wall achieves the required FRL and that all penetrations are properly fire-stopped.

BASIX compliance verification for each dwelling within the development, as separate BASIX certificates are required for each residential unit.

Coordination with Torrens title or strata title subdivision processes, ensuring the building design and compliance documentation supports the intended lot creation.

Principal Certifier services and all mandatory inspections through to Occupation Certificate issue for both dwellings.

Expert knowledge of the Low Rise Housing Diversity Code provisions, which have specific requirements for dual occupancy that differ from the General Housing Code.

We help maximise the development potential of your site within the complying development framework, advising on setback, height and FSR calculations.

Integrated service from certification through to subdivision support — we understand the documentation requirements for creating separate titles.

Efficient inspection scheduling for both dwellings, coordinated to match the construction programme and avoid delays.