Mezuzahs in a Rented Apartment
Question
Answer
Hello
It is forbidden to take the mezuzahs from the house you are leaving, and there is also danger in this action.
There is advice for those who want to take the mezuzahs they have installed.
A. When the next tenant brings his own mezuzahs and removes the first ones, the first tenant can take his own.
B. The first tenant can send his mezuzahs for inspection and place mezuzahs from a gemach in their place, and inform the next tenant that he needs to return the mezuzahs to the gemach and bring his own to install in their place.
Source
Talmud, Bava Metzia 102a - 102b.
Shulchan Aruch, Yoreh De'ah, Siman 291, Se'if 2
A tenant who rents a house from his friend is obligated to affix a mezuzah and prepare the place for its affixing. And when he leaves, he should not take it with him.