Irrigation System Cost Guide, Australia 2026

Price ranges based on current Australian installation rates. Actual costs depend on area, number of zones, system type, and whether an automated controller is included.

Cost by system type

All prices include supply and installation. A backflow prevention device ($200 to $500) is a legal requirement in most states and is usually included by a licensed irrigator.

What affects the price

• ·Area and number of zones: Each irrigation zone requires a separate valve, pipe run, and set of heads or drippers. More zones mean more materials and labour.
• ·System type: Pop-up lawn sprinkler systems cost more per square metre than drip irrigation because the heads and valve hardware are more expensive. Drip systems are cheaper to install and use significantly less water.
• ·Automated controller: A quality automated timer with multiple programs adds $300 to $600 to the project but saves water and removes the need to remember to water manually. Smart Wi-Fi controllers that adjust for rainfall add another $300 to $600.
• ·Water source: Connecting to mains water is standard. Bore water or rainwater tank connections require additional plumbing and can add $500 to $1,500 to the job.
• ·Backflow prevention: A licensed plumber must install a backflow prevention device where the irrigation system connects to mains water. This is a legal requirement in all Australian states and typically costs $200 to $500.

Common questions