DA vs CDC: Which Approval Path for Your Build

Every residential build in Australia needs some form of planning approval before construction can begin. In most states, you have two main pathways: a Development Application (DA) through your local council, or a Complying Development Certificate (CDC) through a private certifier. Choosing the right path can mean the difference between starting construction in 6 weeks or waiting 6 months.

What Is a Development Application (DA)?

A DA is a formal request to your local council to approve your proposed development. The council assesses your plans against its Local Environmental Plan (LEP) and Development Control Plan (DCP), considers any submissions from neighbours, and makes a determination.

Key features of DA:

• Assessed by your local council's planning department
• Can request variations to planning controls (e.g. height, setbacks, floor space ratio)
• Public notification period — neighbours can make submissions
• Typical timeline: 3–6 months for straightforward applications, up to 12+ months for complex ones
• Council fees: typically $5,000–$15,000 depending on project value
• Appeals possible through the Land and Environment Court (NSW) or VCAT (VIC)

What Is a Complying Development Certificate (CDC)?

A CDC is a fast-track approval for developments that tick every box in the relevant state code. In NSW, the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008 sets out these standards. If your project complies with all requirements, a private accredited certifier can approve it — no council involvement needed.

Key features of CDC:

• Assessed by a private accredited certifier
• No public notification required
• Must comply with every standard — no variations permitted
• Typical timeline: 3–8 weeks
• Certifier fees: typically $3,000–$8,000
• Available in NSW, and similar fast-track pathways exist in VIC (ResCode + building permit), QLD (accepted development), SA, and WA

When Does CDC Not Apply?

CDC is not available for every property. Common exclusions include:

• Properties within a heritage conservation area or with heritage listing
• Land classified as flood-prone (varies by council mapping)
• Properties with bushfire-prone designations (BAL-40 or BAL-FZ)
• Sites in certain environmentally sensitive zones
• Blocks that don't meet minimum lot size requirements (typically 450sqm in NSW)
• Designs that exceed the maximum building height or floor space ratio for complying development

You can check whether CDC applies to your property using the NSW Planning Portal's "Can I build?" tool, or ask a private certifier for a preliminary assessment.

Timeline Comparison

Stage	DA Path	CDC Path
Design & documentation	4–8 weeks	4–8 weeks
Pre-lodgement meeting	2–4 weeks (recommended)	Not required
Assessment period	8–24 weeks	2–4 weeks
Conditions clearance	2–4 weeks	Minimal
Construction certificate	2–3 weeks	Issued with CDC
Total to construction start	4–10 months	2–4 months

Cost Comparison

Fee	DA Path	CDC Path
Application/assessment fee	$5,000–$15,000	$3,000–$8,000
Town planner fee	$3,000–$8,000	Usually not needed
Holding costs (extra months of rent, loan interest)	$10,000–$30,000+	Minimal
Total approval-phase cost	$18,000–$53,000	$3,000–$8,000

The biggest saving with CDC is not the direct fees — it is the holding costs you avoid by starting construction 3–6 months earlier.

State-by-State Overview

NSW: The most developed CDC framework. The Codes SEPP sets clear standards for single dwellings, dual occupancies, and ancillary structures. The NSW Planning Portal is your starting point.

Victoria: VIC does not use the term "CDC" but has a similar streamlined process. If your project complies with ResCode (Clause 54/55 of the planning scheme), you can often go straight to a building permit without a planning permit for single dwellings on residentially zoned land.

Queensland: QLD uses "accepted development" and "code assessment" categories. Simple single dwellings in residential zones often fall under accepted development — no application required, just a building approval.

South Australia: SA's planning system was overhauled with the Planning and Design Code. Many residential developments are now "deemed to satisfy" (similar to CDC) if they meet the code.

Western Australia: WA has "deemed provisions" under the Planning and Development (Local Planning Schemes) Regulations. Single houses in residential zones that meet R-Code requirements may not need development approval.

Practical Decision Checklist

Ask these questions to determine your path:

1. Is your property in a heritage area, flood zone, or bushfire zone? → If yes, DA is likely required.
2. Does your design comply with all CDC/code standards (height, setbacks, FSR, lot size)? → If yes, CDC is possible.
3. Do you need design flexibility (e.g. reduced setbacks, extra height)? → DA gives you room to negotiate.
4. Is time critical? → CDC is significantly faster.
5. Is your block unusually shaped, sloping, or has easements? → Get professional advice — a certifier or planner can tell you quickly.

Next Steps

Before spending money on detailed architectural drawings, get a preliminary assessment. A private certifier can usually tell you within a week whether CDC is available for your block. If not, a pre-lodgement meeting with your council ($200–$500) will clarify what your DA needs to address. You can also use the feasibility tool on AusBuildCircle.com to check council-specific requirements for your suburb.