Zoning is the first gate and the permit is the second. A lot's specific district can still limit what is allowed even where the general rule permits a suite, so a call to the City of Saskatoon's planning branch before any design work saves money compared with finding out after construction starts.
Once zoning clears, the permit process checks the same items regardless of the neighbourhood: a separate entrance in most cases, working smoke and carbon monoxide detectors, and confirmation that the suite would pass a buyer's future home inspection, typically $400 to $600, rather than surprise a lender after the fact.
Joel Dyck can confirm what a specific Brevoort Park lot allows before you spend on drawings. Get your hand-reviewed valuation from Joel Dyck.