> they can do things like check power and water utility usage About 5% of Melbourne's housing stock was recently found to be unoccupied, using water usage dat

> they can do things like check power and water utility usage About 5% of Melbourne's housing stock was recently found to be unoccupied, using water usage data. It was closer to 19% for investment properties. http://www.abc.net.au/news/2016-04-18/call-for-vacancy-tax-on-empty-houses-in-victoria/7334578 http://www.abc.net.au/news/2016-04-18/call-for-vacancy-tax-o...