Roof ROI Calculator
Ever wondered how much rainwater your roof could be capturing each month? You might be surprised at the potential. With just two simple questions — your location and roof size — we can give you an instant estimate of how much rainwater you could harvest on average each month.
This quick and easy tool is a great starting point for anyone considering a rainwater harvesting system. Whether you’re building a new home, upgrading your property, or just curious about how to be more water-efficient, understanding your rainwater potential can help you make more informed, sustainable decisions.
By collecting and reusing rainwater, you can reduce your reliance on mains water, lower utility bills, and do your part to support smarter water management — especially in areas affected by drought or seasonal restrictions.
Plus, if you’re working towards compliance with local council requirements, knowing your collection potential can help you design a system that meets both your needs and regulatory expectations.
It only takes a minute to find out.
Ready to see what your roof can do?
Answer the questions below and uncover the hidden value of rain falling right above your head. Start planning your rainwater reuse journey today — and take the first step toward a more sustainable future.
