It is common for students looking for housemates or to fill houses to post on the different Off-Campus Housing social media groups. You can answer ads posted there, or post your own ad looking for housemates. It is always advised to take some time to get to know your potential housemates before signing a lease agreement with them. Have the conversation early on about expectations; house cleanliness, quiet hours, parties, friends/partners staying overnight, managing chores, etc. See if your potential housemates align with what you are looking for in a house before committing because once you sign a lease agreement, you are committed to that unit.
There are also different student run social media groups for different classes.
Please note that the following pages are not affiliated with Queen's University.
Off-Campus Housing Facebook pages:
Class of 2024 Pages
IG - @queensu2024
Class of 2025 Pages
IG - @queensuni2025
Class of 2026 Pages
IG - @queens.2026
These are some great places to start your housemate search and get your name out there. Your program may also have social media pages, and it would be worth looking into if any of your classmates are looking for housemates. It will take a bit of work, looking around, and staying active on these pages; but it will be well worth it.