How long does Brisbane council approval actually take?

Brisbane council approval (Development Application) typically takes 8–12 weeks for house extensions, 8–12 weeks for granny flats, and 10–16 weeks for duplexes. Impact-assessable applications take 3–6 months. Building Approvals through a private certifier take 2–4 weeks. The single biggest factor in speed is application quality — well-prepared applications get fewer council information requests.

Official BCC answer: 25 business days for code-assessable. Real-world answer: 6–12 weeks, sometimes longer.

Typical timeframes

Project Type	Typical Timeframe
House extension / renovation	6 – 10 weeks
Granny flat / secondary dwelling	8 – 12 weeks
Duplex / small multi-dwelling	10 – 16 weeks
Impact-assessable applications	3 – 6 months

How can I speed up my Brisbane council approval?

The single biggest factor is application quality. Incomplete applications get information requests that stop the clock. A well-prepared application with thorough plans and all required consultant reports can sail through with minimal delays. That's where an experienced architect makes the difference.