If you have thin or damaged credit, a secured credit card or a small credit-builder loan through a Saskatchewan credit union can add a positive payment history without much risk, since the balance is backed by your own deposit rather than the lender's.
Ask a mortgage broker to pull a soft check on your file well before you plan to buy, not the week you find a house, since that gives you time to see the actual number and fix a specific problem, like an old collection account, rather than guessing.
Improving a score is mostly about time and consistency, not a trick, and starting early near Saskatoon's benchmark of $444,700 gives you room to work with. Get your hand-reviewed valuation from Joel Dyck.