Landlords will have to prove that damage was done. Landlords and tenants should prepare and sign a form called a rental unit condition statement, which is similar to what you sign before you rent a car. You go through the apartment and make a list of everything; whether there are any damages and confirming that everything is working. Then you should do the same thing at the end of the tenancy, to both agree on any damages that may have been caused by the tenant.