A buyer who discovers undisclosed lead paint after taking possession can pursue the seller through the Court of King's Bench for Saskatchewan for the cost of remediation and any related damages, provided they can show the seller knew about it beforehand.
The safer and cheaper path is disclosing it upfront through your agent and lawyer, since remediation itself, done properly, is a manageable cost compared to a legal claim filed after the buyer has already moved in, and legal fees to defend such a claim can run well past the standard $800 to $1,500 for a routine closing.
What gets a seller in trouble is rarely the defect itself, it is knowing about it and staying quiet. Get your hand-reviewed valuation from Joel Dyck.