Critical Stage Inspections and Occupation Certificates

Worker pouring concrete details

The Environmental Planning and Assessment Regulation 2000 requires mandatory inspections to be undertaken by the appointed Principal Certifier before, during and at the completion of a building project to ensure that the development is constructed in accordance with the development consent or complying development approval, the NCC (Building Code of Australia) and other legislative requirements relating to health and safety. There are several mandatory critical stage inspections required for all types of Class 1 and 10 development which may include:

  • after excavation for, and prior to the placement of, any footings
  • prior to pouring any in-situ reinforced concrete building element
  • prior to the covering of any framework for any floor, wall, roof or other building element (Note: this inspection is required after installation of wall and roof cladding, after installation of electrical and plumbing fit-out, after the installation of window and door frames but prior to the installation of any insulation or internal linings)
  • prior to covering waterproofing in any wet areas
  • prior to pouring any in-situ reinforced concrete for the swimming pool
  • in the case of a swimming pool, as soon as practicable after the barrier (pool fence) has been erected
  • prior to covering any stormwater drainage connections
  • after the building work has been completed and prior to any occupation certificate being issued in relation to the building.

A complete list of the required inspections for your specific building project are detailed in the schedule attached to your Construction Certificate or Complying Development Certificate.

Hornsby Certifiers will undertake the mandatory critical stage inspections during your building project and can issue the Occupation Certificate upon satisfaction of these inspections. These inspections must be carried out by Hornsby Certifiers irrespective of whether the building work is also inspected by a structural engineer.

Please Note: It is the responsibility of the builder/applicant/owner to organise the required inspections with their appointed Principal Certifier and any missed inspections may result in the inability to issue an Occupation Certificate for your building project.

It is a requirement of the Environmental Planning and Assessment (Development Certification and Fire Safety) Regulation 2021 (Section 37) for an application for an occupation certificate to be submitted to the principal certifier prior to consideration. Applications for an Occupation Certificate must be made on the NSW Planning Portal. This can be completed by requesting a new certificate against an existing DA application.

Further information regarding Occupation Certificates can be found in the Fact Sheet prepared by the Department of Planning and Environment.

Book an Inspection

Please contact Hornsby Certifiers via email or phone (02) 9847 6787 for further enquiries.