Be aware of locations away from the house for storing stuff. My aunt, I have discovered, has been supporting a large storage locker at about $300. per month….do the math for 7 years! She hasn’t been in the private ‘vault’ in years. Odd contrast to all the frugality.
This yet one more mental obstacle to be overcome by the hoarder. Unless they go there often, they don’t remember what they even have.