The landlord may withhold a security deposit because the tenant has caused excessive damages to the unit that goes beyond normal wear and tear.

Excessive damages would be intentional or negligent actions that result in the physical damage to the structure of the unit.

If the property owner validly disposes of the property by will and the property has a valid mortgage, then the person that inherits the property will hold a valid title to the property and the holder of the mortgage will retain a lien on the property.