The Residential Tenancies Act, 2006 governs how any existing lease transfers to a buyer, so verify what tenants are actually paying against real deposits rather than a summary sheet before you set an asking price. A rent figure nobody can document is a rent figure a buyer's lender will not credit.
Because Briarwood is a newer suburb still filling in, the renter pool here tends to be thinner than in an established central neighbourhood closer to downtown employment or the university, which affects how quickly a vacant unit re-rents more than it affects the building's underlying value.
A legal second suite, properly permitted through the City of Saskatoon, is worth materially more than an identical space with no paperwork behind it. Get your hand-reviewed valuation from Joel Dyck.