Do I need council approval for a home renovation or extension in NSW?

Whether or not you need council approval for your home renovation or extension in New South Wales depends on the type of work you’re undertaking, the zoning of your property, and the relevant local planning regulations. At Curtis Construction, we guide our clients through this process to ensure everything is compliant before construction begins.

In general, council approval is required for most significant works — including ground floor and upper floor extensions, changes to the building footprint, structural wall removals, or modifications that affect the external appearance of your home. These projects typically require a Development Application (DA) or can sometimes proceed under a Complying Development Certificate (CDC), which is a faster approval pathway handled by a private certifier.

For smaller renovation projects — such as internal refurbishments, kitchen or bathroom upgrades, or certain decks and pergolas — you may fall under Exempt Development, meaning no formal approval is required, provided specific standards are met.

Key factors that determine whether approval is needed include:

• The size and height of the extension

• How close the structure is to boundaries

• Changes to external walls or windows

• Heritage overlays or bushfire zones

• Impacts on neighbours and streetscape

Every project is unique, and requirements can vary between councils in Southern Sydney and the Sutherland Shire. That’s why we always conduct thorough site inspections and, if needed, consult with planning professionals to clarify the necessary approvals before any work begins.