Figured I'd do a mass report on my parents' decluttering efforts, since they're close to done/we know what is happening with the rest. Be impressed. This is in rough chronological order, it all started the week of 3/22.
The couch was thrown out.
Queen size mattress was thrown out.
Everything they put on the truck took up 13ft. This was less than half of the total amount of stuff in the house, maybe as little as 25%
I took a carload of stuff to my house that they're keeping but can't go on the truck for some reason.
3 boxes plus 4 bags of stuff came to my house for hazardous waste (my dropoff is next weekend, thank goodness)
Next up, parents did a massive garage sale, with the intent of clearing everything out. They sold about 60% of that stuff. What didn't sell was boxed up and put in the garage, along with a few pieces of furniture. The garage is a standard 2 car garage, and is about 1/3 full with this stuff. (Extrapolate to figure out how much was sold)
Multiple items of furniture that didn't sell in the garage sale were posted to FB marketplace - a bedroom set, very large wood desk, several tables, chairs, mirror, 2 full tall filing cabinets, fireplace screen, and 3 or 4 other things I forget. All but 2 things have sold at this point.
Metal table, old metal kitchen cabinet (2x), misc lumber, and cinderblocks put out for scrappers/trashpicking/trash pickup.
More stuff from the house/basement is being moved to the garage, including 3 area rugs.
The stuff in the garage is being picked up next week by a company that does liquidation. Combo sale/recycling/trash as I understand it.
Whew. There will be some more stuff to be disposed of once they can close, the liquidators company might be back for all that, but right now they're actually using it.