Sort first so you can size the load
Set aside items for donation, recycling, or special disposal. List the bulky items you still need to remove, along with the approximate number of rooms or areas being cleared. That tells us more than a rough count of garbage bags.
Give neighbours and driveways room
Think through where vehicles will park while the bin is on site. If you share a driveway, gate, or lane, arrange access with the other users and tell us about tight turns or low overhead clearance.
Check unusual household items first
Mention mattresses, appliances, electronics, paint, or batteries separately. Ask about each item before loading so you can arrange another disposal option if needed.