The applicants sought a declaration that they could exercise a contractual option to repurchase real property for $400,000 after crediting an $800,000 vendor take‑back mortgage against a stated repurchase price of $1,200,000.
The respondent argued the mortgage clause required payment of the full $1,200,000 to reacquire the property, with the mortgage deemed satisfied upon payment.
The court applied principles of contractual interpretation and held the clause was unambiguous: exercising the option required payment of $1,200,000 without deduction for the outstanding mortgage.
Contextual evidence and surrounding circumstances did not alter the plain wording, and the contra proferentem rule was inapplicable because both parties participated in drafting the agreement.
The application was dismissed and the respondent’s cross‑application granted declaring that the option could only be exercised upon payment of $1,200,000 subject to normal real estate adjustments.