Hello Ali, thanks for getting back to us.
I know where I live in the country I have a friend who I helped get into a housing unit some 10 or more years ago and he keeps my up to date, and the housing always say that there are no spare units to move in to, but he tells me there are at least 3 or 4 empty flats most of the time but as I say it's in the country.
Rent in Melbourne is extremely high compared to rent in the country, but this might not suit you with kids and grandkids but is something to consider.
You are responsible for yourself to look after, (except for your kids) and don't want to be held ransom by your husband.
We lived on 8 acres but when the divorce went through we had to sell, so I had to move into a house to rent, I was going to buy a place but decided to rent for a while, something I never thought would happen and now rent a two bedroom flat as my physical capabilities have deteriorated, but if you told me when I was living on 8 acres that this would happen, I wouldn't have believed you.