Under Saskatchewan's Residential Tenancies Act, an existing tenancy and security deposit transfer to the buyer at possession if the unit stays occupied, and that lease's terms become a real part of the negotiation rather than a footnote. A lease well below market rent can work against you with investor buyers.
Vacating before listing costs you rental income during the vacancy period and adds cleaning and minor repair time before your first showing, but it can open the door to a broader buyer pool and, in some cases, a higher accepted price than an investor would offer for the tenanted unit.
Joel Dyck can model both scenarios against actual comparable sales in your neighbourhood so the decision is based on numbers, not guesswork. Get your hand-reviewed valuation from Joel Dyck.