When is Daylight Modelling Required?

Short answer

Daylight Modelling is often required for council approvals, Green Star certification and projects with strict energy or comfort requirements.

Full answer

Daylight Modelling may be requested by local councils during Development Applications (DA) to prove that a building provides adequate natural light. It is also required for Green Star submissions, NABERS IEQ credits and for compliance with certain NCC Section J provisions. In residential developments, it is often necessary to demonstrate that habitable rooms meet minimum daylight access standards.

Why this matters

Knowing when daylight modelling is required helps avoid costly delays in approvals and ensures compliance is addressed early in the design process.

How Certified Energy can help

We clarify council requirements, prepare the necessary reports and liaise with approval bodies to ensure your daylight modelling submissions meet the required standards.

Related regulations

• NCC Section J - daylight provisions
• Green Star IEQ Daylight Credit 12.3
• Local council DA daylight and overshadowing rules

Helpful resources

• What is Daylight Modelling?
• How much does Daylight Modelling cost?
• What are the benefits of Daylight Modelling?
• How does Daylight Modelling support compliance?