Unsanitary conditions and harmful animals

Your recourses in situations of unsanitary conditions

Normal or unacceptable wear and tear: At what point can a dwelling be described as unsanitary?
Humidity, water damage, mould, foul odour: Your recourses as a tenant
Mice, cockroaches, rats, bed begs in your dwelling: Your recourses as a tenant

Disasters

Flooding, fire: Recourses for tenants in the event of a disaster