Thinking about adding a deck? Here's what you need to know about materials, permits, and costs in Sydney.
A well-built deck adds serious value to a Sydney home — extending your living space outdoors and creating the perfect entertaining area.
Choosing Your Timber
Merbau and spotted gum are popular hardwood choices for Sydney decks thanks to their durability and resistance to our humid coastal climate. Composite decking is a low-maintenance alternative.
Do You Need Approval?
Do not assume a deck is exempt based on height alone. Exempt-development rules include multiple conditions, and heritage, bushfire and other site controls can change the approval pathway. Check the NSW Planning Portal and your council for the exact property before starting work.
Typical Costs
Expect to pay between $250–$450 per square metre for a quality timber deck in Sydney, depending on height, access, and finish.
Maintenance
Oil your timber deck every 12–18 months to protect against UV damage and moisture. Composite decking needs just an occasional clean.




