property guardian
noun [ C ] uk/ˈprɒp.ə.ti ˌɡɑː.di.ən/ us/ˈprɑː.pɚ.t̬i ˌɡɑːr.di.ən/
财产监护人
someone who lives in a house, office block, or other building that would otherwise be empty, especially at a very low rent, in order to prevent people from entering it illegally