What Is a Complying Development Certificate (CDC)?
A CDC is an alternative to a Development Application (DA) that allows faster-tracked approval for projects that meet predefined standards. CDCs are assessed by private certifiers (accredited certifiers) rather than council — meaning faster turnaround, simpler process, and lower fees.
In Western Sydney, CDCs are commonly used for new homes, granny flats, duplex developments, and alterations/additions that comply with the relevant State Environmental Planning Policies.
What Can You Build with a CDC?
Under the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008, the following can typically be approved via CDC:
• New single-storey and two-storey homes • Granny flats (secondary dwellings) up to 60sqm • Dual occupancies (duplexes) in certain zones • Alterations and additions to existing homes • Commercial and industrial fitouts • Demolition of existing structures
The key requirement is that the proposed development must comply with all development standards — setbacks, height limits, lot coverage, landscaping, BASIX, and other criteria.
CDC vs DA: Key Differences
Speed: • CDC: 10–15 business days • DA: 40–90+ business days
Cost: • CDC: Certifier fees typically $3,000–$8,000 • DA: Council fees $5,000–$20,000+
Flexibility: • CDC: Must strictly comply with pre-set standards • DA: Council can consider merit-based arguments and variations
Notification: • CDC: No public notification or neighbour consultation • DA: Neighbour notification and potential objections
Buildana always recommends CDC where it's available — it's faster, cheaper, and more predictable.
Stuck on approvals?
We've taken hundreds of projects through CDC and DA. Tell us your address and approval pathway — we'll map the realistic timeline.
When Can't You Use a CDC?
CDC is not available when:
• The site is in a heritage conservation area • The property is heritage-listed • The land is classified as flood-prone • The site is in a bushfire-prone area (BAL 40 or Flame Zone) • The proposed development doesn't meet all complying development standards • The site has specific environmental constraints
In these cases, a DA is required. Buildana's approval strategy service identifies the best pathway before design begins, saving you time and money.
How Buildana Manages CDC Approvals
Our CDC process runs tight and direct:
1. Site assessment — confirm CDC eligibility 2. Design to comply — ensure all standards are met from day one 3. Documentation — prepare all required plans, reports, and certificates 4. Certifier lodgement — submit to accredited certifier 5. Approval — typically within 10–15 business days 6. Construction commencement — start building immediately after approval
Buildana has a 98% first-submission CDC approval rate — because we get the details right before lodging.
Buildana builds across Sydney. Visit /approvals/cdc to learn more or /approvals/da to discuss your project.
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