Quick Answer
A CDC is faster and cheaper, but only if your project ticks every box. A DA is more flexible and is required for heritage homes, conservation areas, and non-standard designs, but it takes longer. We assess your home and recommend the right pathway during your free inspection.
The Two Pathways at a Glance
CDC
Complying Development Certificate - a combined planning and construction approval issued by a private certifier for projects that meet set state-wide standards.
- Approval in weeks, not months
- Lower fees and more certainty
- No neighbour notification
DA
Development Application - a formal application assessed by your local council, required when a project falls outside CDC criteria.
- Handles heritage & conservation areas
- Flexible, non-standard designs
- Allows dormers & roof lifts
Side-by-Side Comparison
| Factor | CDC | DA |
|---|---|---|
| Typical timeframe | 2-6 weeks | 2-4 months |
| Assessed by | Private certifier | Local council |
| Relative cost | Lower | Higher |
| Neighbour notification | Not required | Usually required |
| Design flexibility | Limited to standards | High |
| Heritage properties | Not eligible | Required |
| Conservation areas | Usually not eligible | Required |
Which One Is Right for You?
A CDC usually suits you if…
- Your home is not heritage listed or in a conservation area
- You are working within the existing roof space (no roof lift)
- Your design meets the standard setback and height controls
- You want the fastest, most predictable path to building
You will need a DA if…
- Your property is heritage listed or in a conservation area
- You want to add dormer windows or lift the roof
- Your design falls outside CDC standards
- Council controls in your area restrict complying development
We Manage Whichever Path You Need
You don't need to become a planning expert. As part of our service, we assess your home, recommend the right pathway, and handle the entire application - whether that's engaging a private certifier for a CDC or preparing and lodging a full DA with your council.
- Free assessment of your eligibility for CDC vs DA
- Preparation of architectural and engineering documentation
- Liaising with certifiers or council on your behalf
- Managing conditions of consent through to completion
Not Sure Which Path Applies?
Book a free inspection and we'll tell you exactly which approval pathway suits your home.