My ex-husband has resided on his elderly father's property (near Melbourne) since 1996 rent-free. He erected some buildings on the property some years ago which now have to be demolished as they were apparently not built according to regulations, and he will have to find somewhere else to live. He is trying to force his father to sell the property and give him $300K+ as he claims that all the work he has done on the property over the years added that amount of value to it. His father is over 90 years old. I assume he (ex-husband) has no legal leg to stand on here, but his father seems to think he has and is considering selling up and moving into a rented place.