The City of Saskatoon's bylaw enforcement division can tell you by phone whether there is an open complaint tied to the address. Separately, any unpaid fine that escalated to a registered claim would show up on a title search, which Information Services Corporation maintains and which your lawyer runs before a sale closes.
For a seller, the practical move is to ask before you list, not after an offer arrives. A quick call to the city and a title search through your lawyer, usually inside the $800 to $1,500 legal fee, clears up the question well ahead of possession.
If nothing shows up in either place, there is nothing outstanding to disclose. Get your hand-reviewed valuation from Joel Dyck.