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How to validate a BASIX certificate marked as review required
What do the BASIX certificate reference number validation messages mean?
What do the BASIX certificate reference number validation messages mean?
When an applicant enters a BASIX reference number within a development application (DA) and complying development certificate (CDC) application, the reference number is validated against the BASIX tool. There are three types of messages:
Reference number is valid (the BASIX certificate will be automatically uploaded onto the application)
Reference number requires review (the council / certifier will need to review the BASIX certificate/s to validate them)
Reference number is not valid.
Please view the information sheet to view the messages and what you will need to do when you see one.
This change was introduced on 31 July 2026, to strengthen the compliance and security requirements for BASIX Certificates submitted as part of a development application or complying development certificate application through the NSW Planning Portal.
How to request a Development Coordination Authority (DCA) referral check
How to upload documents after determination of a development application
How to perform a preliminary review and assessment of a planning proposal
How to perform a Gateway Implementation and Finalisation for a Planning Proposal
How to create and submit an occupation certificate application (non-class 2 development)
How to create and submit a construction certificate application
What happens in the case of a non-minor amendments from 1 July?
What happens in the case of a non-minor amendments from 1 July?
When a council approves an amendment request as non-minor, this updates the lodgement date to the date the amendment request was submitted. If the application lodgement date is after 1 July 2026, the new DCA framework applies and the application will need to be sent to the DCA for consideration.
The system will auto-cancel any existing CNR cases when an amendment request is approved as non-minor. The council will need to re-enter the CNR request through the workflow in the Portal, if a referral is required.
Applicants will be advised that they can request a refund via the DCA, if applicable.
I am an applicant and I am unsure whether my application should be referred. What do I do?
I am an applicant and I am unsure whether my application should be referred. What do I do?
Some applicants, such as developers or homebuilders, may know that their application will need to be referred to a specific agency. Selecting this information can help support councils during the assessment process.
If you are unsure, select ‘Unsure’, and the council will enter this information for you when assessing your application.