Does anyone have a parent who is a hoarder?
You could offer a different solution such as having it all moved to a storage unit and getting him to agree that he can keep his hoard within that limitation so that areas of the house are of limits to his collection.
I know that sounds strange but it's a compromise that allows him to feel good and gets the house under control.
The only other thing I can come up with is a scam where you get someone to pose as a collector and offer him a big check to sell his collection. Problem there is if he doesn't sell he'll think it's a gold mine and if he does your buyer will have to disappear and the check bounce.
Have you tried accepting him for who he is and how he wants to live?Really don’t know what to do
You could offer a different solution such as having it all moved to a storage unit and getting him to agree that he can keep his hoard within that limitation so that areas of the house are of limits to his collection.
I know that sounds strange but it's a compromise that allows him to feel good and gets the house under control.
The only other thing I can come up with is a scam where you get someone to pose as a collector and offer him a big check to sell his collection. Problem there is if he doesn't sell he'll think it's a gold mine and if he does your buyer will have to disappear and the check bounce.