Saskatchewan does not have a standard practice of tenants paying a broker fee to find a rental in the first place; most landlords who use a leasing agent pay that agent themselves, the same way a home seller pays a listing commission, and commission in this province is negotiable rather than fixed by any regulation.
What actually governs your rental unit is the Residential Tenancies Act, which sets out how much security deposit you can collect, how it must be held, and what written notice you owe a tenant before ending a tenancy or raising the rent, regardless of what fee rules apply in some other jurisdiction's housing market.
If you are weighing whether that rental suite is worth more as ongoing income or folded into an outright sale, with legal fees on a sale typically running $800 to $1,500, that is a Saskatoon-specific number, not something this imported rule touches at all. Get your hand-reviewed valuation from Joel Dyck.