The fastest approval is the one your site qualifies for. Not the one your mate's builder used in Castle Hill.
Two doors
- CDC — Complying Development Certificate. A private certifier checks your design against a fixed code. No council merit assessment, no neighbour notification, no committee. If it complies, it is approved. Typically weeks, not months.
- DA — Development Application. Council assesses the proposal on its merits against the LEP and DCP. Neighbours are notified. An assessing officer weighs streetscape, privacy, overshadowing and anything else they are asked to. Months, sometimes many.
Why CDC is not automatically the answer on the Beaches
CDC runs on the Low Rise Housing Diversity Code. It allows dual occupancies, manor houses and terraces of up to two storeys as complying development. But the code is a checklist, and the Beaches fail checklists for predictable reasons:
- Bushfire-prone land. Large parts of Frenchs Forest, Belrose, Forestville and Beacon Hill are mapped. Bushfire-prone land is generally excluded from CDC for new dwellings, or sits in categories that push you to a DA.
- Slope. The code has limits on cut and fill and on retaining wall heights. A sloping Belrose block can blow past them.
- Trees. CDC cannot approve the removal of certain trees. If the design needs the tree gone, you need council.
- Heritage and conservation. Pockets of Manly and Balgowlah are out.
- Flood and coastal hazard. Mapped land is excluded.
A flat, cleared, non-bushfire R2 block in Dee Why or Brookvale can be a clean CDC. A treed, sloping block on the Frenchs Forest ridge almost never is.
Where the LMR policy changes the DA
This is the part most people miss. Inside an 800 m LMR ring, the DA is a different animal. The state's non-refusal standards mean council cannot refuse on lot size, width or height if you meet them. The argument moves from “can we build three?” to “how do we build three well?” That makes a DA inside the ring far more predictable than a DA outside it. Sometimes a well-prepared DA inside the ring beats a CDC that needs two redesigns to squeeze past the code.
How we choose
- Map the site: LMR ring, bushfire, flood, heritage, trees, slope.
- Test the design against the CDC code. If it passes clean, go CDC.
- If it needs compromises that cost a bedroom or a car space, test the DA inside the ring.
- Pick the pathway that gets the best product approved fastest. Not the fastest pathway to a worse product.
A clean site goes CDC; a constrained site inside a ring goes to a DA that cannot be refused on size, width or height; outside a ring, budget the time.
After approval
Neither pathway lets you start digging. A DA needs a Construction Certificate. A CDC covers construction, but you still need a Principal Certifier appointed and conditions satisfied. Approval Hub, our approvals team, runs the DA-to-CC-to-OC chain so nothing sits on a desk waiting for a signature.
The honest timing
- CDC on a clean site: fastest.
- DA inside an LMR ring, well prepared: predictable.
- DA outside a ring on a constrained site: budget the time and the patience.
Ask which one your block qualifies for before anyone draws a line.