Maximum size limits under CDC (Complying Development Certificate) vary by:

Council and zoning

Lot size and percentage coverage

Boundary setbacks and height-to-boundary ratios

Expandify will confirm all CDC compliance during your Prelim phase, including:

Site width

Height of raked ceiling (measured from natural ground level)

Side and rear boundary clearances

If your block exceeds CDC limits, a Development Approval (DA) may be required instead.