70 year old woman just separated after 30 year defacto relationship. What is the general rule of percentage in property settlement?

Hi Maud,
I believe that after 30 years the law would see your contributions as equal and the split would be 50/50.
Your personal circumstances may give reason for something different to apply to your situation and I would recommend seeking some legal advice if there is going to be any arguments.
Best of luck
Scott

You should consult with a family lawyer. I am in Brisbane and could assist you but there are many fine lawyers in North Queensland.