Start with the City of Saskatoon's permit record for any suite, since egress windows, ceiling height and fire separation all have to be in place before a lender or appraiser will count that space's income at all.
Up to four units, financing still runs on comparable sales adjusted for rent. Above that, a lender will normally want a report from an Appraisal Institute of Canada designated appraiser based on stabilized net operating income rather than a per-square-foot figure.
Joel Dyck reads a Lakeview property's rent roll against the Residential Tenancies Act and confirms what is actually legal before pricing it. Get your hand-reviewed valuation from Joel Dyck.