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One of the first decisions you’ll need to make when starting a property development or home renovation in New South Wales is whether your project requires a Complying Development Certificate (CDC) or a Development Application (DA).
Both are formal approval pathways, but each has different requirements, timelines, and implications. Understanding which one applies to your project early on can save time, money, and hassle – and that’s where C&A Surveyors can help.
What Is a Complying Development Certificate (CDC)?
A CDC is a fast-tracked approval process for straightforward, low-impact developments that meet specific standards under the State Environmental Planning Policy (SEPP).
It combines planning and construction approval into one step and is usually assessed by a private certifier or council.
CDCs are commonly used for:
- New homes on residential-zoned land
- Minor extensions, additions, and renovations
- Secondary dwellings (granny flats)
- Garages, sheds, and some pools or demolition works
To qualify for a CDC, your project must meet strict criteria, including:
- Zoning compliance and permitted land use
- Building setbacks, heights, and floor space ratios
- Absence of sensitive overlays (e.g. bushfire, flood, heritage zones)
- Adherence to development standards for things like landscaping, drainage, and privacy
If your project checks every box, CDC approval can be granted in as little as 2–3 weeks. However, if even one criterion isn’t met, you’ll need to go down the DA pathway instead.
What Is a Development Application (DA)?
A DA is a more flexible but lengthier approval process assessed by your local council. It’s required for larger, more complex, or non-standard developments – especially when CDC criteria aren’t met.
DAs are typically required for:
- Multi-storey homes or uniquely designed builds
- Renovations that alter the structure, height, or footprint
- Properties affected by bushfire, flood, or heritage overlays
- Subdivisions, boundary adjustments, or tree removals
The DA process includes:
- Lodging plans and environmental reports with council
- Public consultation (including neighbour notification)
- A merit-based assessment against the LEP and DCP
- A determination that may be approved, refused, or conditionally approved
While it takes longer, often 3 to 6 months or more, a DA allows more flexibility to propose variations from planning controls, provided the overall impact is justified.
CDC vs DA: Key Differences at a Glance
| Factor | CDC | DA |
|---|---|---|
| Approval Body | Private Certifier or Council | Local Council Only |
| Timeframe | 2–3 weeks | 3–6+ months |
| Flexibility | Strict compliance only | Flexible, merit-based |
| Project Type | Low-impact, standard builds | Complex or unique designs |
| Cost | Lower | Higher (consultants, delays) |
| Public Consultation | Rare | Often required |
How a Surveyor Helps with Both CDCs and DAs
Whether you’re applying for a CDC or a DA, an experienced surveyor, like C&A Surveyors, plays a critical role in the early stages of your project.
At C&A Surveyors, we provide:
Detail & Boundary Identification Surveys
Ensure your building is positioned correctly on the lot and complies with setback and zoning requirements. Required for both CDC and DA submissions, these plans show land levels, structures, vegetation, and other site features needed for design and approval. To learn more, click here.
Subdivision and Title Services
If you’re creating a dual occupancy, granny flat, or multi-lot development, we prepare the subdivision plans and manage LRS registration. To learn more, click here.
3D Surveys and Laser Scanning
Take your project to the next level with industry-leading accurate 3D scans. Perfect for complex sites, heritage properties, or builds where precision matters.
✔ Speed up the design process
✔ Avoid conflicts with neighbouring structures
✔ Provide architects and certifiers with unmatched detail
Expert Guidance
We work closely with your certifier, architect, or planner to flag any constraints early — like easements, overlays, or boundary concerns — so you avoid costly redesigns or delays.
CDC or DA: Which Is Right for You?
Choose a CDC if:
- Your project is straightforward and meets all planning controls
- The land is free of overlays like bushfire or flood zones
- You want a quicker and more cost-effective approval route
Choose a DA if:
- Your design exceeds planning controls (e.g. height or FSR)
- The site has heritage or environmental constraints
- You need flexibility or are proposing a unique design
- You’re undertaking subdivision, tree removal, or significant landscape change
Tips for a Smoother Approval Process
- Get a survey early: Don’t wait until after design — survey data is critical for accurate plans and assessing eligibility
- Know your zoning and overlays: This will determine your approval path
- Work with professionals: Surveyors, certifiers, and planners help avoid costly mistakes
- Be prepared with clear documentation: Incomplete plans or reports lead to rejection or delays
Why C&A Surveyors?
With over 100,000 projects delivered across Sydney and Newcastle and over 250 Google reviews, C&A Surveyors are the trusted surveying partner for architects, builders, and developers. Whether you’re seeking a CDC for a new home or a full DA for a major development, we deliver:
- Fast, accurate surveying
- Expert advice to avoid delays
- Council and certifier-ready plans
Ready to Start Your CDC or DA Journey?
Let’s get your project off the ground with confidence.
Contact C&A Surveyors today to book a site survey or get expert guidance on your next steps. We’ll help you get it right, from the ground up!
