Your real estate lawyer, regulated by the Law Society of Saskatchewan, orders a title search early precisely to catch this, and a straightforward lien with a known payout amount rarely adds more than a few days to a normal 2 to 4 week closing once it is identified.
Where the debt is larger than the equity in the house, the arithmetic becomes the real constraint rather than the paperwork, since the lawyer cannot release funds that do not exist, and that situation needs to be worked through with the lienholder before listing rather than after an offer is accepted.
Disclosing a known lien to your agent and lawyer before you list is what keeps the timeline intact. Get your hand-reviewed valuation from Joel Dyck.