How Long Does Council Approval Take in Sydney in 2026? DA vs. CDC Timelines

In 2026, a standard Development Application (DA) in Sydney takes an average of 80 to 115 days to be approved by local councils. The exact time depends on your municipality. However, if your architectural plans are designed to meet state standards, you can bypass the council entirely. With this, you can get a Complying Development Certificate (CDC) approved by a private certifier in as little as 20 to 24 days. *

What is the Actual Difference Between a DA and a CDC in NSW?

A Development Application (DA) is a formal request submitted to your local council. It is required for complex projects, homes in heritage conservation areas, or designs that ask for variations to local planning controls. The council assesses your design against their specific Local Environmental Plan (LEP) and Development Control Plan (DCP).

A Complying Development Certificate (CDC) is a fast-tracked approval process for straightforward builds. Instead of the council debating the merits of your design, a private certifier simply checks your plans against a rigid set of state-wide rules. If it ticks every box, it must be approved.

Why Are Sydney DA Processing Times Still Taking So Long?

While the NSW State Government intervened recently to force councils—like those covering the Northern Beaches and North Sydney—to speed up their processing times, the reality is that local DAs are still subject to significant red tape. A DA requires public notification where neighbours can object. Furthermore, plans are often passed between internal council departments for traffic, heritage, and environmental reviews.

If the council asks for more information (known as a Request for Information or RFI), the “clock” stops. Therefore, this can add weeks to your timeline.

Can I Build a Granny Flat or Outbuilding Under a CDC?

Yes. Whether you are adding a granny flat to a standard suburban block or planning a large custom outbuilding on an acreage property in Duffys Forest, you can often bypass a DA entirely if your plans meet the CDC criteria. The CDC rules dictate strict setbacks from boundaries, maximum heights, and landscaping ratios.

How Do Electrical Requirements Impact DA and CDC Timelines?

This is the hidden trap that catches most homeowners out. Because I am an electrician who manages a drafting firm, I see standard drafting applications get delayed constantly. This delay is often because the designer didn’t factor in modern energy compliance.

In 2026, meeting the mandatory 7-Star BASIX energy requirements often means installing heavy electrical loads: heat-pump hot water systems, EV chargers, and large solar arrays.

• For a CDC: Your plans must explicitly detail how you are meeting these thermal and energy requirements from day one.

• For a DA: If your electrical infrastructure requires a new street pole, a 3-phase power upgrade, or complex trenching that impacts significant trees, the council will stall your application until detailed electrical engineering plans are provided.

By designing the electrical compliance directly into the blueprints before submission, we eliminate the need for councils to hit you with RFIs, keeping your project firmly on the fast track.

The 2026 Approval Comparison

Feature	Development Application (DA)	Complying Development (CDC)
Average Approval Time	80 to 115 Days	20 to 24 Days
Assessing Authority	Local Council	Private Certifier or Council
Neighbour Notification	Yes (Public exhibition required)	Required, but neighbours cannot object to the design
Best For	Complex designs, sloping blocks, heritage areas	Standard new builds, granny flats, compliant extensions

*These are rough time frames and not always true.