<human>: Give me a shortened version of the text

Here's a quick run down:

The unit is divided into two units: The Upstairs and The Downstairs. The Downstairs in entered through the garage door, and only the garage door. The mail is also delivered here. The upstairs has its own door. The garage is a common area because of the mail and the washer and dryer. That includes the inside stairs and hallway outside of my room. 

More to the point. The landlord (a male) apparently told the upstairs tenant (a female) that he was moving into the living room upstairs. There is a free room upstairs, but according to the upstairs tenant, he might want to rent that room out. Before, the landlord lived in a completely different city in a different county. He has a key to the premises and has apparently already started moving things in. 

The problem: We found out about this two or so days ago through the upstairs tenant (friendly chat, not officially). There was talk that he planned on moving in in about 4 days. Is there any kind of law against him moving in? Let me know if you need more information.
<bot>: Landlord is moving in to the living room upstairs that is currently being occupied. The upstairs shares common space with my unit. No notice has been provided. Is this legal?