The City of Saskatoon reassesses property on its own multi-year cycle for tax purposes, and residential property in the province is taxed on 80 percent of assessed value, but that roll is a general tax record, not a registry built to track vacancy or investor ownership the way the foreign program is.
A property owner who wants to check their own record can request their assessment directly from the City of Saskatoon, and any dispute over the assessed value goes to the Board of Revision, a Saskatchewan process with no equivalent in the program this question is based on.
If a specific notice arrived about your Saskatoon property, that is worth reading carefully rather than assuming it works like a program from another country. Get your hand-reviewed valuation from Joel Dyck.