What type of property is classified as "investment-grade"?

Investment-grade properties should double in value every 7 to 12 years on a perpetual basis. This equates to a 7% to 10% annual compounding growth rate – assuming inflation is in the RBA’s 2% and 3% band. https://www.prosolution.com.au/makes-proprty-investment-grade/Read Stuart's latest book? He's only got 19 reviews on Amazon so far, if Wealth by Design helped you, leaving one would mean a lot: https://www.amazon.com.au/review/create-review?asin=192318654X Run your own business? Chec...