Complying Development Certificates allow fast-tracked approvals for many residential projects. Here's what qualifies and how to apply.
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.
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 is streamlined and efficient:
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.
Oliver Alameri
Founder and Managing Director of Buildana. Oliver has over 15 years of experience in residential and commercial construction across Western Sydney, with a focus on delivering quality builds and creating value for clients through smart design and rigorous project management.
