In Ontario, under what circumstances can a real estate salesperson modify the terms of a signed Agreement of Purchase and Sale without obtaining new signatures from all parties?

Option A: When the changes are minor clerical corrections

Even minor clerical corrections require proper amendment procedures with all parties' signatures. What appears 'minor' to a salesperson could have significant legal or financial implications for the parties. TRESA and RECO regulations make no distinction between major and minor changes - all modifications must follow formal amendment processes to maintain contract validity and legal protection.

Option B: When both parties give verbal consent

Verbal consent is insufficient for contract modifications under Ontario law. Real estate contracts must comply with the Statute of Frauds, requiring written documentation for enforceability. Verbal agreements lack the legal protection and evidentiary value necessary for real estate transactions, and salespersons cannot rely on verbal consent to justify contract alterations.

Option C: When the changes benefit both parties

Even changes that appear to benefit both parties cannot be made without proper amendment procedures. The determination of 'benefit' is subjective and could lead to disputes. Additionally, salespersons lack the legal authority to make such determinations or modifications regardless of perceived benefit. All changes must follow formal processes with proper signatures.