For the source text click/tap here: Bava Metzia 103
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Our last mishna of the perek states:
In the case of one who rented out a house to another, and then the house fell, the landlord is obligated to provide the renter with another house. If the original house was small, the landlord may not construct a large house as a replacement, and if the original was large, he may not construct a small house as a replacement. If the original had one room, he may not construct the replacement with two rooms, and if the original had two rooms, he may not construct the replacement with one. He may not reduce the number of windows, nor add to them, except with the agreement of both of them.
We explore the halachot of landlord responsibility for home upkeep and condemned properties.