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Cost of rainwater tank installation

Last updated: 14th Jun 2019

Plumbers charge an average of $80/hr to install a rainwater tank, and this will either increase or decrease depending on factors like the size of the tank. Typically, rates range from as low as$77.50/hr to as high as $88/hr.

Where does this pricing data come from?

All prices stated in the above article are based on FY 2016 pricing data compiled by The figures resulted from a comprehensive analysis of quotes submitted by Rainwater Tank Installers on the site from July 2015 to July 2016.

Factors that affect the cost of the job

If you want to properly budget your rainwater tank installation project, you need to know the different factors that affect pricing. These can include:

Type of tank

Rainwater tanks are available in a variety of materials, from plastic to metal, which can suit any budget. Plastic is usually the cheapest material, and it is ideal if you live in a coastal area as you don’t need to worry about rust. Metal is also a popular material due to its durability and ability to preserve the quality of the water. If you’re not concerned about your budget, you might want to opt for a fibreglass tank. These tanks are not the cheapest option, but they’re very durable and can withstand extreme conditions.

Size of tank

When it comes to rainwater tanks, bigger ones are naturally be more expensive. Tanks are measured by their litre capacity, which usually ranges from 2,000 litres to 28,000 litres. Your choice will likely be determined by where you will install it and the size of the space. Slimline tanks are for narrow spaces, while round tanks can be used for large, open spaces. If the space is still too small for a slimline tank, under deck tanks are available. These can be installed under your deck or directly under the home.

Additional costs

Plenty of extra materials will be needed for your installation. These can include pipes, fittings, etc. While accessories such as pumps and water diverters aren’t necessary, they still prove to be very useful. Pumps control water pressure, and water diverters help in maintaining good water quality.

Your location will play a part in pricing

Plumbers in Victoria charge approximately $77.50/hr for rainwater tank installation. Rates are a bit higher in New Wales where rainwater tank installation costs around $80/hr. Meanwhile, Queensland customers pay about $88/hr to have their rainwater tanks installed.

Reduce your water bills by hiring a licensed plumber to install your rainwater tank. The best plumbers in your area can be found on

Pricing information correct as at August 2016.

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There are a lot of qualified plumbers in your area who can help you with your rainwater tank installation job. Feel free to check out’s highest-rated rainwater tank installation specialists in these major cities: