My name is ***** ***** I am a NSW Solicitor. Thank you for your question, and will do my best to assist you with your question. Please understand this is not legal advise but a guide to assist you.
You cannot extort money from him this is a criminal offence. You have allowed him to live there rent free and you cannot now demand money to store his items.
If you wish to have them disposed of send him a letter asking him to come and remove them or you will seek orders to give them to charity.
If he does not respond then get an order from the magistrates court that he has abandoned the items so that you can give them to charity and throw away what is not worth anything.
But you cannot demand money to give it back to him.
Throwing it away without his permission or a court order you will be liable to compensate him if he sues.
I hope this makes sense and is of assistance. If there is nothing further
thank you for using my services.
If I have missed anything, or you have any further questions please let me know
If there is anything else in the future please do not hesitate to ask.
Please do not forget to leave positive feedback.