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Step-by-step instructions, frequently asked questions, video tutorials and TAFE NSW training modules.
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How to consult with agencies and councils for a Division 5.1 activity (PDF, 2.2 MB)
How to determine a development or modification to a development application (PDF, 3.49MB)
How to complete the gateway implementation stage (PDF, 3.61 MB)
How to review and assess a council referral (PDF, 2009KB)
How to review and assess a Development Coordination Authority referral
How to request additional information (PDF, 1,834KB)
What do the BASIX certificate reference number validation messages mean?
What do the BASIX certificate reference number validation messages mean?
On 31 July 2026, changes were introduced 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.
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.
The messages displayed for the applicant can be viewed in this information sheet.
The messages that a council or certifier user will see in the review harness, or when editing an application are slightly different. You can view the messages and what you will need to do when you see one here.
How to resolve Housing and Productivity Contribution information in a development application
How to resolve Housing and Productivity Contribution information in a development application
This step-by-step guide outlines the steps a council user takes to resolve housing productivity contribution (HPC) information in a development application. This guide also outlines how to manually trigger or withdraw a contributions case.