The financing side works the same as it would locally. A lender can issue a pre-approval and later a firm approval under CMHC's lending guidelines based on income and identification documents sent electronically, and a mortgage does not require the buyer to be physically present in the province to close.
The legal side is where distance actually matters. A Saskatchewan lawyer, generally $800 to $1,500 in fees, can close a purchase using a power of attorney if the buyer genuinely cannot be present, though most buyers simply sign documents remotely before possession day.
A financing condition and an inspection condition matter more, not less, when you cannot walk the property yourself before removing them. Get your hand-reviewed valuation from Joel Dyck.