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Representation Agreements:
Realty Brokers and Realty Buyers and Arguments of Enforceability
Last Updated: July 03 2026
Question: Can a buyer in Ontario avoid paying a real estate brokerage commission under an OREA Form 300 Broker Representation Agreement?
Answer: In Ontario, Lo Greco Law can help you understand whether an OREA Form 300 Broker Representation Agreement is enforceable and what evidence is most likely to succeed, because courts typically rely on the written contract terms and apply the parol evidence rule to reject alleged oral promises that would contradict or amend the agreement, As noted in Sun v. Mani, 2024 CanLII 35486, buyers often fail when they cannot show express written amendment and instead try to argue the BRA was merely “a formality” or changed orally, because the parol evidence rule prevents oral evidence from overriding clear written terms, If you need LSO tribunal representation or Small Claims Court help for commission disputes in Ontario, call (416) 488-4110 to book a consultation with a 30+ year experienced lawyer at Lo Greco Law.
Enforceability of Broker Representation Agreements
Within the realm of realty business in Ontario, the OREA Form 300, better known as the Broker Representation Agreement, is a common contract used to establish a relationship between a would-be buyer and a realty brokerage firm. The Broker Representation Agreement contains terms that limit the contract in geographical boundary and time period, among other things, including commissions payable. Legal disagreements stemming from the alleged failure to adhere to a Broker Representation Agreement are a frequent; especially within the Small Claims Court whereas disputes over commissions supposedly owed per a Broker Representation Agreement often falls within the thirty-five thousand ($35,000.00) dollar per Plaintiff monetary jurisdiction of the Small Claims Court. Interestingly, court decisions are often varied as the legal issues underpinning Broker Representation Agreement disputes can turn either way depending upon the unique details of each case.
The Law
An illustrative case involving conflict over commissions owing per a Broker Representation Agreement is provided by Sun v. Mani, 2024 CanLII 35486, where it was explained that:
The Law Surrounding the Buyer Representation Agreement (OREA FORM 300)
[22] Disputes surrounding the Buyer Representation Agreement (hereinafter “BRA”) are frequent visitors to the Superior Court and the Small Claims Court.
[23] The front page of the BRA dictates the following, “The Buyer hereby gives the brokerage the exclusive and irrevocable authority to act as the Buyer’s agent commencing at 9 a.m. on the 3rd day of May, 2021 and expiring at 11:59 p.m. on the 31 day of August, 2021.”
[24] On the portion for commission, it reads (my emphasis added):
2. COMMISSION: In consideration of the Brokerage undertaking to assist the Buyer, the Buyer agrees to pay commission to the Brokerage as follows: If, during the currency of this Agreement, the Buyer enters into an agreement to purchase or lease a real property of the general description indicated above, the Buyer agrees the Brokerage is entitled to receive and retain any commission offered by a listing brokerage or by the seller. The Buyer understands that the amount of commission offered by a listing brokerage or by the seller may be greater or less than the commission stated below. The Buyer understands that the Brokerage will inform the Buyer of the amount of commission to be paid to the Brokerage by the listing brokerage or the seller at the earliest practical opportunity. The Buyer acknowledges that the payment of any commission by the listing brokerage or the seller will not make the Brokerage either the agent or sub-agent of the listing brokerage or the seller.
If, during the currency of this Agreement, the Buyer enters into an agreement to purchase any property of the general description indicated above, the Buyer agrees that the Brokerage is entitled to be paid a commission of 2.5% of the sale price of the property or [as per MLS] (entered term).
The Buyer agrees to pay directly to the Brokerage any deficiency between this amount and the amount, if any, to be paid to the Brokerage by a listing brokerage or by the seller. The Buyer understands that if the Brokerage is not to be paid any commission by a listing brokerage or by the seller, the Buyer will pay the Brokerage the full amount of commission indicated above.
In the dispute involving Sun, the Defendant argued that the documented Broker Representation Agreement was either initially inclusive of a verbal condition or was subsequently modified to include the verbal term that the contract would be unenforced. This argument was unaccepted by the judiciary whereas such an argument conflicts with the parol evidence rule which is an underpinning to the law of contracts and the need for certainty within contracts. For a purchaser, such as the Defendant in Sun, to successfully challenge the enforcement of a Broker Representation Agreement, a formally documented amendment to the agreement would be necessary. The invocation of the parol evidence rule, a legal precedent barring the supplanting of written accords with alleged verbal agreements, was stated in the Sun litigation, with reference to Fung v. Decca Homes Limited, 2019 ONCA 848, where within Fung, it was said.
[5] We see no error in the application judge’s application of the parole evidence rule in the circumstances of this case: Hawrish v. Bank of Montreal, 1969 CanLII 2 (SCC), [1969] S.C.R. 515, at p. 520. Even if there was a collateral oral agreement, something that is disputed by the respondent, that oral agreement could not contradict the written agreement. ...
The parol evidence rule appears to often arise in cases disputing enforcement of a Broker Representation Agreement whereas within Sun, while citing Apex Results Realty Inc. v. Zaman, 2018 ONSC 7387, and First Contact Realty Ltd. v. Prime Real Estate Holdings Corporation, 2015 ONSC 5511, all stand for the proposition that the written terms within a Broker Representation Agreement require amendment in writing rather than merely a purported verbal amendment. Specifically, these cases stated:
[35] In our matter, Mr. Mani alleges that Mr. Sun stated to him that the BRA was only a “formality” and that it would not enforced. This appears to me to be a modification of the fundamental terms and conditions of the contract. There is also no evidence in writing of this oral representation. The Parole Evidence Rule is applicable here, which holds that evidence of an oral agreement cannot prevail over the clear written contractual terms.[3]
[36] In Apex Results Realty Inc. v. Zaman, 2018 ONSC 7387[4], the brokerage brought a summary judgment motion in Superior Court for payment of commissions owed on two separate properties during the effective representation period of the BRA. Justice Turnbull ruled in the brokerage’s favour citing the terms of the BRA indicated that commission was payable to the brokerage by the buyer if the buyer purchased a property during the currency of the BRA.[5] In coming to his decision, Justice Turnbull cited a decision of Justice Healey in First Contact Realty Ltd. v. Prime Real Estate Holdings Corp., 2015 ONSC 5511. This was yet, another summary judgment motion wherein the Defendant buyer alleged that there was an oral agreement to terminate the BRA. Both Justice Healey and Justice Turnbull, in their requisite decisions cited application of the Parole Evidence Rule, restricting evidence of oral evidence in the face of a clearly written and executed contract between parties. Justice Turnbull’s decision was appealed and it was upheld by the Court of Appeal in Apex Results Realty Inc. v. Zaman, 2019 ONCA 766[6].
[53] The parole evidence rule exists to help parties avoid this type of allegation being made by a contracting party. It effectively precludes the admission into evidence of words which would vary or contradict the terms of a written contract between the parties. Without it, it would almost be impossible to have finality or certainty in contractual relations. It further limits the ability of a party to fabricate evidence to vary or change the terms of a written contract. The parole evidence rule centres the court’s attention on the contract and what the parties have reduced to writing. It creates contractual clarity and certainty.
[25] This evidence is insufficient to establish the essential elements of an agreement, as it lacks any specificity with respect to the terms of such agreement, as well as failing to outline the consideration for entering into such an agreement. Hinn provides no details in his affidavit, or elsewhere, of the particulars of such an exchange of ideas leading to the parties forming an intention to terminate the Buyer Representation Agreement. The details are lacking of when, where, how and why such alleged discussions took place.
Accordingly, a buyer seeking to avoid enforcement of a Broker Representation Agreement will need to show that upon entering into the agreement, as is usually confirmed by signature, such arose from a relevant act of wrongdoing such as a misleading statement as a misrepresentation by the realty agent. Essentially, the buyer will need to show, in legal terms applicable to contract law, something that is beyond simple remorse for entering into the Broker Representation Agreement as a binding contract.
Conclusion
In the realm of real estate dealings, buyers will encounter the Broker Representation Agreement or as formally known the OREA Form 300. This document sets the terms of engagement between a real estate brokerage and the prospectively property buying client by encapsulating the duties and expectations of both sides. The Broker Representation Agreement stands as a legally binding contract and is grounded upon the common principles of contract law. When it comes to assessing the validity or enforceability of the Broker Representation Agreement, evidence must be presented. This evidence should clearly align with the established norms of contract law, demonstrating whether the prerequisites for a valid contract were met. The fact that the Broker Representation Agreement is an agreement specifically designed for real estate dealings fails to exempt the agreement the general contract law principles. Like any contract, enforceability of a Broker Representation Agreement is judged against the backdrop of common legal principles that apply to contractual agreements. Despite a specialized focus, the Broker Representation Agreement is without uniqueness in the eyes of the law. The Broker Representation Agreement is subject to the same legal scrutiny as any agreement made in other fields of business. This consistency reinforces the idea that, irrespective of the context, the foundational elements of contract law remain applicable, ensuring fairness and mutual agreement in legal and business dealings whether realty focused or otherwise.