Landlord selling what are my rights

[Andrew Smith]

I am currently saving for my first investment property. While I wait I am moving into a basement suite at the beginning of February. I'll add that I live in British Columbia. The landlord isn't asking for any paperwork for me to sign to do with the pricing and other terms. I feel as though it is not in my best interests to have no documentation. The big issue I foresee is they told me they are planning on selling the house in the summertime. They say that I can continue to rent once they sell. However if the buyer doesn't want me to live there or since I am paying under market value for rent they may want to boost the price or give me the boot. So my main question is can I get them to sign anything that will secure me living there even barring a sale? Or any other suggestions would be greatly appreciated. Thanks!!