The answer is Yes and No (Don’t you love answers like that!)
Yes, you must move out if the landlord intends to move into the property, or intends to let his/her domestic partner, children, parents, or grandparents move in. HOWEVER, this is only required if the lease that you signed included this provision within it. If it’s not mentioned in the lease, then the landlord cannot move him or family members into the property. There is a catch, though: If your lease doesn’t include a provision allowing the landlord to move back into the property, the landlord is allowed to include such a provision in an amendment to the lease after the initial term for the lease has expired
No, under State law, you don’t have to move if the landlord wants to move somebody other than his/her spouse, domestic partner, children, parents, or grandparents in. In other words, you don’t have to move out if the landlord wants to move his/her brother, cousin, aunt, or uncle into the property. However, cities can expand the list of who the landlord can move back into the property. For example, in Los Angeles, the Los Angeles County Rent Stabilization Ordinance (RSO) allows a landlord to additionally move a dependent aunt or uncle into the property.