Common Litigation Issues in Agreements of Purchase and Sale

July 23, 2026

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An Agreement of Purchase and Sale is often viewed as the point at which the negotiation ends. The price has been agreed upon, the closing date has been set and the parties have signed. In reality, however, acceptance of the agreement begins a period in which both parties must continue to perform a series of legal and practical obligations until the transaction is completed. Most real estate transactions proceed without serious difficulty, but when disputes arise, they are often connected to issues that existed well before anyone began talking about litigation.

The most common problems are not necessarily dramatic. A condition may not have been drafted clearly enough, financing may have been assumed rather than fully confirmed, a repair obligation may have been poorly documented, or one party may have relied upon an understanding that was never properly incorporated into the agreement. These issues can remain relatively minor while the transaction is progressing smoothly, but they can become significant once expectations diverge or a party becomes unable or unwilling to complete its obligations.

For this reason, litigation risk should not be viewed only as something to consider after a dispute has developed. Good transaction management involves identifying the circumstances that commonly lead to disagreement, documenting important decisions carefully, and addressing uncertainty while the parties still have an opportunity to clarify or resolve it.


The Agreement Must Reflect What the Parties Actually Intended

An Agreement of Purchase and Sale governs much more than price and closing date. It establishes conditions, timelines, deposits, obligations, representations and the responsibilities of the parties from acceptance through closing. When those provisions are clear and both parties understand them in the same way, the agreement provides a practical framework for completing the transaction. When the wording is vague or incomplete, the agreement can instead become the source of uncertainty.

Disagreements often develop because the parties believed they had reached the same understanding when they had actually interpreted the arrangement differently. A seller may believe that a particular item is excluded from the purchase while the buyer believes that it remains with the property. The parties may agree that work will be completed before closing without clearly defining what work is required, the standard to which it must be completed or how completion will be verified. A buyer may believe a condition provides broad protection while the seller interprets that condition much more narrowly.

These disputes are not always caused by bad faith. In many cases, the problem is simply that the written agreement did not express the negotiated understanding with enough precision. Clear drafting therefore serves a practical purpose beyond legal formality. It helps reduce the possibility that the parties will later rely upon different interpretations of the same transaction.


Financing Problems Can Become Contractual Problems Very Quickly

Financing is one of the most common sources of difficulty in residential transactions and can also create significant exposure in commercial and industrial purchases. A mortgage pre-approval or preliminary lender discussion does not necessarily mean that the financing required to complete the transaction has been finally approved. Lenders may still require verification of income, an appraisal, satisfactory insurance, confirmation of property condition or additional underwriting review before funds are advanced.

The property itself can also create financing issues. An appraisal below the purchase price, an insurance concern, an environmental problem, a zoning issue or an unusual property characteristic may cause a lender to revise its position. Where a buyer has already waived or fulfilled the financing condition, these later difficulties do not necessarily relieve the buyer of the obligation to complete the transaction. The legal consequences of failing to close can be substantial and may extend well beyond the amount of the deposit.

This is why a financing condition should not be treated as routine language that simply expires after a few days. It should be understood in relation to the actual risks the buyer faces and the information the buyer needs before becoming fully committed.

Professional Insight: The purpose of a financing condition is not simply to confirm that a lender is willing to discuss a mortgage. It should give the buyer a meaningful opportunity to determine whether the required financing can be obtained on terms that allow the transaction to be completed responsibly.


Conditions Must Be Drafted and Managed With Care

Conditions are one of the most important risk-management tools available in a real estate transaction because they allow a party to investigate a material uncertainty before the agreement becomes fully binding. In a residential purchase, these conditions may relate to financing, inspection, insurance, the sale of another property or document review. In a commercial or industrial acquisition, the due-diligence requirements may be much broader and can involve environmental assessments, leases, zoning, title, surveys, financing, building systems and operational suitability.

The protection provided by a condition depends not only on the subject being investigated but also on how the condition is structured. The agreement should provide enough time for the investigation to be completed and should clearly establish what must occur for the condition to be waived, fulfilled or relied upon. If the wording is unclear or the timeline is impractical, a condition may provide less protection than the parties expected.

Problems become particularly serious when one party believes that a condition has been satisfied or properly waived while the other believes the agreement has terminated. At that point, the dispute is no longer about whether an inspection or financing approval was satisfactory. It becomes a dispute about whether the agreement itself remains binding.

The value of a condition therefore lies in its ability to support a real decision. It should give the client enough information and enough procedural clarity to determine whether the transaction remains acceptable before unconditional obligations are assumed.


Waiving Due Diligence Means Accepting More Risk

Competitive markets sometimes encourage buyers to reduce or remove conditions in order to make an offer more attractive. That may improve the competitive strength of the offer, but it also transfers additional risk to the purchaser. A buyer who waives financing, inspection, insurance or other due-diligence protections may still be obligated to complete the purchase even if a significant problem is discovered later.

This does not mean that conditions should never be waived. There may be circumstances in which the buyer understands the risk and decides that the competitive advantage justifies accepting it. The important distinction is whether the risk is being assumed deliberately or simply overlooked.

Good representation should therefore help the client understand what protection is being given up and what consequences may follow if the relevant issue becomes a problem after the condition has been removed. The decision to waive due diligence should be informed rather than automatic.


Deposits Can Become a Significant Part of the Dispute

The deposit is sometimes viewed simply as money delivered after an offer is accepted, but its legal significance can become much greater if the transaction fails to close. Where a purchaser defaults, the seller may seek to retain the deposit and may also pursue additional damages depending upon the circumstances. Where the parties disagree over whether a condition was validly relied upon or whether one party breached the agreement, entitlement to the deposit can itself become part of the dispute.

The timing of the deposit, the person holding it and the circumstances under which it may be released therefore have practical and legal importance. Buyers and sellers should understand that the deposit is not merely a gesture of seriousness but part of the contractual structure of the transaction.

Where a failed transaction becomes contentious, the deposit may represent only one component of the potential financial consequences. This is why deposit disputes should be considered in the broader context of the agreement and the circumstances that caused the transaction to fail.


Representations About the Property Can Create Exposure

Real estate transactions involve a substantial exchange of information. Sellers answer questions, agents communicate information, buyers conduct inspections and documents may describe the condition or characteristics of the property. Litigation can arise where a buyer believes that an important fact was misrepresented, incompletely disclosed or inaccurately described.

The significance of a representation depends upon the particular circumstances, including what was said, what was written, what the seller knew, what the buyer knew or could reasonably investigate, and what the agreement itself provided. A casual attempt to reassure a buyer about a property issue may later be interpreted as a representation upon which the buyer relied.

Professional communication therefore requires care. Information should be distinguished according to whether it has been independently verified, provided by another party or remains uncertain. Where a matter could materially affect the buyer’s decision, proper investigation is generally more reliable than reassurance based upon assumption.

This principle becomes particularly important in commercial and industrial transactions, where representations may involve environmental conditions, leases, zoning, operating expenses, building systems or other matters that can materially affect value and future use.


Amendments Require the Same Discipline as the Original Agreement

Real estate transactions frequently evolve after an agreement has been accepted. Closing dates may change, conditions may be extended, prices may be adjusted and repairs or other obligations may be renegotiated. These changes are commonly documented through amendments.

Because the parties are already committed to the transaction, there can be a tendency to treat amendments as administrative rather than contractual. That can create problems if the amendment changes one provision without considering how it affects the rest of the agreement or introduces wording that conflicts with an existing term.

An amendment affecting price, deposits, credits, financing or closing arrangements can also influence the expectations of lenders, lawyers and other professionals involved in the transaction. For that reason, amendments should be considered as part of the agreement as a whole rather than as isolated side arrangements.

The same drafting discipline that applies to the original contract should therefore apply to later changes. If the amendment materially alters the parties’ obligations, the consequences should be understood before it is signed.


Failure to Close Can Produce Consequences Far Beyond the Deposit

One of the most serious disputes occurs when a party is unable or unwilling to complete the transaction on the scheduled closing date. The financial consequences can extend considerably beyond the deposit, particularly where the seller is forced to resell the property in a different market or at a lower price.

A failed closing can also create losses connected to carrying costs, legal fees and other expenses arising from the breach. In residential transactions, the effect can extend into interconnected purchases, moving arrangements, financing commitments and family plans. In commercial transactions, the consequences may be broader because a business may have coordinated lease expiries, equipment moves, construction schedules, inventory, staffing or financing around the anticipated closing.

This is why warning signs should be addressed early. Where financing is uncertain, a material issue remains unresolved or one party appears unable to meet an obligation, delaying the discussion until immediately before closing can reduce the available options and increase the potential damage.


Documentation Can Be Critical When Memories Differ

Many real estate disputes eventually become disagreements about what happened during the transaction. One party remembers a conversation differently from another. A client believes an instruction was given, but there is no clear record of when or how it was communicated. A seller believes that a repair obligation was limited, while the buyer remembers a broader commitment.

Good documentation cannot prevent every dispute, but it can make the history of the transaction considerably easier to establish. Important instructions, negotiated changes, notices, extensions and material decisions should therefore be documented appropriately, particularly where the transaction has moved away from the original terms.

This is not about creating paperwork for its own sake. It is about preserving a reliable record of the decisions that matter. When a disagreement develops, contemporaneous documentation can help clarify whether the problem arose from the agreement itself or from a later misunderstanding.

Professional Insight: Documentation is most valuable when recollections begin to diverge. A clear record of instructions, amendments, notices and decisions can often resolve uncertainty before it develops into a larger contractual dispute.


Communication Problems Often Precede Legal Problems

Some disputes begin with a difficult legal issue, but many begin much earlier with poor communication. An unanswered question, an assumption about who is responsible for a task or a missed deadline can seem relatively minor in isolation. When several of these issues occur together, the transaction can become increasingly difficult to manage.

Good communication means more than simply exchanging information. It requires ensuring that responsibilities are understood, important decisions are confirmed and unresolved issues are identified early enough to address them. This becomes particularly important when several professionals are involved, including lawyers, lenders, inspectors, contractors, environmental consultants or planners.

Each professional may be addressing a different aspect of the transaction, but the client still needs to understand how the information fits together and whether any issue has implications for the agreement. Transaction management therefore involves coordination as well as communication.


Residential Transactions Can Become Litigious Despite Their Familiarity

Residential transactions often use standardized forms and familiar clauses, but their familiarity should not be mistaken for a lack of risk. Financing failures, inspection issues, title concerns, undisclosed property conditions, disputes over fixtures and chattels, deposit problems, repair obligations and failed closings can all create significant financial exposure.

The emotional consequences can also be substantial because residential transactions often involve a client’s home, moving plans, family decisions and other interconnected commitments. A contractual dispute can therefore become personally disruptive as well as financially expensive.

The appropriate approach is not to treat every residential transaction as unusually risky, but to identify what is unusual about the particular property or agreement. Those transaction-specific issues are often where additional attention is required.


Commercial and Industrial Transactions Carry Additional Layers of Risk

Commercial and industrial Agreements of Purchase and Sale tend to involve greater complexity because the property is often connected directly to a business or investment strategy. A purchaser may need to investigate environmental conditions, existing leases, zoning, title, building systems, operating expenses, financing, redevelopment potential and the suitability of the property for a particular use.

These issues frequently interact with one another. An environmental concern may affect financing. A zoning limitation may affect the intended operation. A tenant issue may affect valuation. A title restriction may interfere with redevelopment or expansion. The contractual consequences of one issue may therefore extend into several other parts of the transaction.

This complexity makes disciplined due diligence and careful drafting particularly important. The agreement should provide enough time and flexibility to investigate the material issues while clearly establishing the process for addressing them.


Legal Remedies Are Often More Complex Than Simply Cancelling the Deal

When a serious breach occurs, the parties sometimes assume that the transaction simply ends and everyone walks away. In reality, contract disputes can involve deposits, damages, termination rights, extensions and other remedies depending upon the wording of the agreement and the circumstances of the breach.

In some cases, the parties may disagree over whether the agreement was validly terminated. In others, one party may seek damages arising from the failure to close. There can also be circumstances in which a party seeks to compel completion of the transaction rather than accepting financial compensation.

This is why serious contractual disputes should be referred promptly to legal counsel. Real estate professionals can assist by preserving documentation, clarifying the transaction history and coordinating information, but questions about legal rights, remedies and litigation strategy belong with the client’s lawyer.


Litigation Risk Is Best Managed Before a Dispute Develops

The most useful lesson from real estate litigation is not how to win a lawsuit. It is how to reduce the likelihood that the transaction reaches that point.

Clear drafting, appropriate conditions, careful due diligence, disciplined documentation and effective communication all reduce the number of assumptions that can later become disputes. Where uncertainty arises, addressing it while the parties still have the ability to clarify or amend the agreement is generally easier than attempting to resolve the issue after a breach has occurred.

No transaction can be made completely risk-free, and no agreement can anticipate every possible circumstance. Professional risk management is therefore not about eliminating uncertainty. It is about identifying material uncertainty early enough that the client can make an informed decision about it.


Good Representation Includes Transaction Risk Management

Professional real estate representation involves much more than negotiating price and preparing forms. An important part of advisory work is helping clients understand the commitments they are making, identifying where uncertainty exists and determining what information should be obtained before those commitments become difficult to change.

That may involve recommending appropriate conditions, identifying issues that require specialist investigation, documenting important instructions, coordinating with legal counsel and other professionals and helping the client understand how the agreement affects the practical operation of the transaction.

The objective is not to replace legal advice. It is to recognize when a real estate issue has contractual consequences and make sure the client receives the appropriate information and professional guidance before the problem becomes more difficult to manage.


Prevention Remains the Most Effective Litigation Strategy

Most buyers and sellers will never become involved in real estate litigation, and that should remain the objective. An Agreement of Purchase and Sale creates legal and financial obligations that deserve careful attention whether the transaction involves a first home, an investment property, a commercial building or an industrial facility.

The underlying principles are consistent across all of those transactions. Important information should be verified, material expectations should be documented, conditions should be used deliberately, deadlines should be monitored and changes should be recorded clearly. When uncertainty arises, it should be addressed before assumptions become entrenched positions.

Thoughtful preparation cannot eliminate every possible dispute, but it can substantially reduce the misunderstandings and unmanaged risks that allow disputes to develop. The goal of good transaction management is therefore not to prepare clients for litigation, but to structure and manage the transaction so that litigation is less likely to become necessary in the first place.

Guidance for Smarter Real Estate Decisions.

This article is provided for general information purposes only and does not constitute legal advice. Contractual rights, remedies and obligations depend upon the wording of the particular agreement and the circumstances of the transaction. Buyers, sellers, landlords, tenants and investors should obtain independent legal advice where a contractual dispute, possible breach or significant legal issue arises.


Written by Rodney Harvey, Broker of Record at Konfidis, Brokerage providing advisory-focused commercial, industrial, investment, and real estate brokerage services across Oshawa, Durham Region, and Ontario.


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