Waterloo students on 8- or 12-month leases often hear from their landlord mid-term: "Rent is going up next month." Whether that is allowed depends on your lease type and whether proper notice was given.
During a fixed-term lease
If you signed a lease with a set end date and a set rent amount, that rent is generally locked for the whole term. A landlord cannot usually increase it partway through just because they want to. Reply in writing that you do not agree to pay more until you understand your rights.
After the term — month-to-month
If you stay past the end date without signing a new fixed term, you typically become month-to-month. Then guideline increases may apply — Ontario's annual guideline was 2.5% for 2025. Your landlord must use the N1 form and give at least 90 days' notice before the increase takes effect.
Above the guideline
Increases above the guideline require Landlord and Tenant Board approval. Your landlord cannot simply charge more because they asked. Use our rent increase checker to see if the math works, then get advice before paying a higher amount.
Co-op sublets
If you are subletting from another student, the primary tenant sets the sublet rent — but you should still have a written sublet agreement with the amount locked for your term. Sudden increases without a new agreement are a red flag.