The NSW Government has worked hard to promote the Complying Development Certificate (CDC) as a faster, simpler alternative to the traditional Development Application (DA) process.

In theory, it’s an attractive proposition: streamlined assessment, pre-set standards, and a 20-day turnaround for approval, or 10 days if you use the new NSW Pattern Books for your development.

But as any architect or designer who works in the real world knows, what appears to be a clear, fast track on paper can be anything but in practice.

The Promise vs. Reality
Let’s start with the headline: 20 days for approval. That’s what consumers are sold. However, what’s often
overlooked is that this timeframe only begins after a fully compliant and complete application is lodged. Getting to that point can take weeks, or even months of preparation.

Unlike a DA, which allows for discretion, CDCs are black and white. A project either complies in full, or itdoesn’t. The standards, while publicly available, are exacting and complex. They cover everything from lot
size and setbacks to flood zoning, bushfire overlays, heritage considerations, and even the position of
underground services.

Preparation Takes Time
Before an application can even be submitted, a considerable amount of work is required. This includes:

• A detailed site survey
• Investigations into planning restrictions and overlays
• Engagement with external consultants such as arborists, engineers, bushfire or planning consultants if needed
• Confirmation of compliance with the Building Code of Australia
• Preparation of a full drawing and documentation package

For many homeowners, this preparation phase is invisible. They only see the 20-day approval period and
assume a fast result. But for architects and designers, this is where the real complexity lies.

Valuable investigative tools like PropCode have made the initial investigations much easier and identify the
key issues that may impact a property and the ability to use the CDC pathway for a particular project, but
they cannot identify the intricate details that may ultimately cause the problems.

One small detail can derail everything
The most frustrating part of the CDC process, particularly for clients, is that you can be weeks into planning, with all documentation ready to go, only to find one seemingly minor issue that renders the CDC pathway invalid.

Examples of this we have seen in recent projects include:

• a tree on a neighbour’s lot that restricts building envelope flexibility which needed a tree removal application
• a covenant on a title that related to the construction of the original estate 30 or so years ago that due to the wording was still technically applicable to the site
• One clause relating to access to a site in a bush fire zone that was meant to relate to rural properties that Council had included in their CDC requirements for a C4 zone in Sydney

These are not issues a layperson could reasonably be expected to anticipate and quite often the consultants or certifiers do not see the complication until the very end of the process. Yet they have the power to stall a project or send it back to square one, resulting in increased frustration and costs for all parties involved.

When CDC Isn’t an option – What next?
When a CDC pathway falls through, homeowners are often surprised, and understandably disappointed, to discover that their only option is to find a certifier who interprets the requirements differently or submit a full DA.

The shift to a DA application isn’t just administrative. It can mean:

• Reworking designs to meet different planning rules
• Longer timeframes for approval
• Public notification or neighbour objections
• A change in build cost or feasibility

The pivot can feel like a major setback, especially after time and money have been invested based on the expectation of a streamlined process, and either and new Certifier or a DA will add more time and money to the project that will not have been budgeted.

A more honest Conversation
This isn’t a criticism of the CDC framework itself. When the conditions are right, it absolutely can deliver a faster, more efficient outcome. But it’s not the universal solution that promotional materials and politicians suggest.

As architects, our role is to guide our clients through all available options with clarity. That means managing expectations, conducting rigorous upfront checks, and being prepared with a Plan B. It also means advocating for a more honest public narrative around CDC approvals, one that doesn’t leave consumers misinformed or misled.

Proceed with eyes wide open
The CDC path can work, and work well, for the right site and project. But it is not always quick, and it is rarely simple.

For anyone considering this approach, the best advice is this: Engage with experienced professionals early. Do the homework. Ask the right questions. And prepare for the possibility that the “easy”path may not be the right one for you.

Because in the end, real design, and real approvals, require more than just ticking boxes.