Tenant Jens Riediger and his family have until spring next year to find a new home after the Bavarian administrative court in Munich made the demolition order final.
Stuart Everett's skull alone was split into several fragments with his face stripped off and dumped separately, a jury heard after being warned they would hear 'distressing' evidence about his death.
Bas Basra, 49, fears it will cost him up to £5,000 to clean up the once 'immaculate' flat in Folkestone, Kent, that he had rented to the same person for 12 years.