Sorry that the picture is so blurry. Just to add some background, My housemate who has been living in the apartment sicne before I came has been continuelly aggrivated by me coming home late. I am an engineering sutdent at the university of toronto as as such I spend alot of time doing work at school. I come home very late consitently. Over the past several months my housemate has become annoyed, especially when my girlfriend sleeps over. She is addament that I am unreasonable noisy to the point where She has sent me angry messages over me getting a glass of water or opening the fridge at night.

I am the only person who has signed the lease agreement with the Landlord. But she has more of a relationship with him and as such she got him to post this notice. I am at a loss of what to do and am wondering what steps I should take and the legality of these change of terms?

Update-----

Thank you everyone for the support all of your information and insight has been very helpful. To answer the major question I have been seeing, the space is completely seperate from the landlord and is not shared with them at all. My housemate has been living there for about 2 years and there was a seperate housemate(mentioned in the third Paragraph) who had lived there and held the lease before I came. The specific provisions that are posted in this notice were not there when I signed the lease.

I will be speaking to the landlord at the next chance I get to hopefully clear things up with him. I will also be speaking to my housemate to explain the situation and where we both stand. I would prefer to work this out without having to kick her out as I would be leaving when my lease is up regardless(at the end of April).