Selling my house in Australia. I pay tax in Thailand (up to end of last year). Have not needed to lodge tax return in Australia in the past 5 years (not required). So they consider me non-resident in Australia for tax purposes. 
 

Question is whether I need to pay CGT if I’m not living there?

https://www.ato.gov.au/Individuals/Capital-gains-tax/Foreign-residents-and-capital-gains-tax/Your-residency-status-and-CGT/#:~:text=If you are a foreign,lodge your Australian tax return.

 

You should get the right answer here.  ????

 

Articles like this aren't bad too that look at the situation post the new legislation. 

Changes in Main Residence Exemption for Expats (homeloanexperts.com.au)