Question: what are the 5 levels of hoarding?
Answer: Level One: All doors and stairways of the home are accessible. ... 
Level Two: One exit is blocked and/or one major appliance or heating/cooling/ventilation device has not worked for at least six months. ... 
Level Three: ... 
Level Four: ... 
Level Five: ... 
Source: National Study Group on Compulsive Disorganization.