Have a look at unlisted property trusts.
I have been getting 8% p/a from day one, increased to 8.75% over 6 years with a 25% capital growth and the unit holders will be voting on whether to extend the trust for another 5 years soon.
Neither capital nor returns are guaranteed.
Returns are "tax advantaged" and the tax liability is offset against capital gains on sale of the building.
When the tenant in the building is federal or state government or a bank, the risk factor is low.
This is one source from a Google search. I am not recommending it but you may learn something there.
capita.com.au/?gclid=EAIaIQobChMI5N7o3Ynv2wIViY2PCh0j6Q9_EAAYASAAEgJWBfD_BwEAs usual, do your own diligence and putting all your eggs in the one basket has been proven historically to be an unwise investment strategy.