What Is an Occupation Certificate (OC)? 

An Occupation Certificate allows current and future owners of a property to use the new building or a new section of the building. A Part OC may be issued which allows you to occupy the completed part of the building.

The Principal Certifier is required to conduct Mandatory Critical stage inspections throughout the Construction Phase of the development to ensure the Development is eligible for Occupation.

When do I need OC?

OC is required by the applicant / property owner after the completion of construction to prove that the new development is safe, compliant with required laws and regulations and meets the Australian Standards for occupants to use the building.

What is the role of principal Certifiers in obtaining OC?

An Occupation Certificate verifies that the Principal Certifying Authority (Private Certifier) is satisfied that the building is suitable to occupy and satisfies relevant requirements and Australian Standards. These generally include:

  • Development consent is in force
  • Mandatory Critical stage inspections have been conducted
  • The design and construction of the building is consistent with the approved plans.
  • All conditions set out in the consent or have been satisfied.
  • Development is built to Australian Standard / NCC Requirements


Is an Occupation Certificate necessary?

  • The Occupation Certificate certifies that the construction is in compliance with the approved building plan. It is issued by the Private Certifier after the construction is complete and the property is ready to be occupied. Without this document, your building has no legal sanction for occupancy which will cause further issues such as selling and obtaining insurance.

Need Help?

If you require any further assistance in relation to this topic, you are welcome to contact our team of experienced Certifiers by clicking here to submit an online enquiry form or call us on

How we work

  • 1. You request a Fee Proposal

    You will fill in an Application Form with required details and we will then provide you with a no obligation Fee Proposal

  • 2. You accept the Fee Proposal

    Once you have accepted the Fee Proposal and paid the corresponding invoice we will commence the certification process

  • 3. We Commence the Certification Process

    We review all provided documents and request further details if required. We then organise any required Site Inspections.

  • 4. We Complete Required Site Inspections

    We complete the required Site Inspections and inform you of any further requirements

  • 5. We Issue the Certification

    After all required updates are complete, our Principal Certifier will provide the Certification