Should I Include 3D Renders in my CDC / DA Submission?

3D renders are not required for most development applications or CDCs in New South Wales.

But in some cases, they can help communicate your design clearly and avoid misunderstandings with councils or neighbours.

At Town Planning Sydney, we create 3D visualisations when they support better DA approval outcomes or clarify complex designs.

Here’s when you should consider including them.

1. 3D renders are optional but helpful

Neither local councils nor private certifiers formally require 3D renders for standard residential DAs or CDCs.

However, many applicants use them to support their proposal and reduce objections.

We include renders when clients want to showcase a design clearly or when the context is visually sensitive.

2. They can help explain complex rooflines, façade changes or corner block layouts

Flat drawings like elevations and plans don’t always show how a building will feel in real life.

A 3D view helps planners and neighbours understand the final outcome more easily.

We used renders to support a DA in Mosman where the proposed second storey was set back to reduce visual bulk.

3. Councils often ask for them in heritage zones or design-sensitive streets

In heritage conservation areas or areas with strict streetscape controls, a 3D render can help planners visualise how your proposal blends with the surroundings.

We’ve supported clients in Leichhardt and Woollahra using renders to show compatible material use and rooflines.

4. For commercial or multi-dwelling projects, 3D renders build confidence

While not mandatory, many larger projects benefit from 3D visualisation at the DA stage.

They help council staff, internal reviewers and the community understand the bulk, scale and impact of the building.

In Greenacre, we supported a five-unit townhouse DA with renders showing key sightlines and street views.

5. 3D renders are rarely needed for CDC submissions

Private certifiers focus strictly on whether your plans comply with the Housing Code or CDC rules.

They typically don’t assess visual impact or streetscape appearance. For CDC, you’re better off investing in precise technical drawings and documentation.

6. Renders must match your DA plans

We’ve seen clients submit renders that don’t reflect the final drawings, which can create confusion.

We make sure every 3D visual matches the plans exactly, including materials, colours and window placements.

This ensures your visual aids support your application rather than create conflict.

7. Renders can support neighbour engagement

If your project goes on public exhibition, a 3D image may help nearby residents understand what’s planned.

It can reduce objections based on incorrect assumptions about bulk, height or visual dominance.

Our planning consultants use these tools alongside formal planning advice to manage potential community concerns.

Including 3D renders is not required, but with the right strategy, they can help your submission stand out.

With Town Planning Sydney, you get expert visuals backed by strong town planning and NSW planning knowledge to support your goals.