Under the Municipalities Act, the City of Saskatoon can issue remedial orders for an unsafe or derelict building, and if an owner ignores them within the stated 30 to 60 day window, the City can do the repair work itself and place the cost on the property's tax roll, which is a lien, not a seizure.
A landlord who lets a property deteriorate that far also damages its resale value long before any bylaw action, since a buyer's lawyer and inspector will surface deferred maintenance and outstanding orders during due diligence regardless of what triggered the question.
Joel Dyck can tell you honestly what condition and any outstanding City orders do to a Saskatoon property's value before you list. Get your hand-reviewed valuation from Joel Dyck.