Relevant rules in the Regulation:
- Schedule 1, Part 1.4, Division 1.4.1, Section 1.27.
A chimney, flue or vent doesn’t need DA approval if it:
- penetrates or is attached to the building's roof, and
- doesn't extend more than 1.5m above the lowest point of the roof where the chimney, flue or vent penetrates/attaches to.