A Purchase and Sale Agreement Is Being Challenged
You have already bought or sold real estate, but the other party is seeking to have the agreement declared invalid.
REAL ESTATE DISPUTES
We protect owners, sellers, buyers and other parties to transactions when a purchase and sale agreement, deed of gift or another real estate transaction is challenged in court. We analyze the documents, powers of attorney, calculations, correspondence, registration of title and the entire history of the parties’ relationship. We work both on the side of those who seek to have a transaction declared invalid and on the side of a respondent who needs to preserve its validity.
Is your transaction being challenged? We will review the grounds and the evidence before building a defense position. Do you want to challenge a transaction? First we determine whether statutory grounds exist and whether they can be proved.
You have already bought or sold real estate, but the other party is seeking to have the agreement declared invalid.
There are grounds to believe that the agreement was concluded under circumstances that allow its invalidity to be questioned.
A dispute has arisen over the power of attorney, the representative’s authority or the owner’s actual will.
One party claims that the money was not transferred, was transferred in full or that the settlements took place differently than stated in the documents.
It is necessary to check which specific circumstances confirm or refute this version.
One of the parties claims that when signing the documents the person did not understand the meaning of their actions or could not control them.
The consequences of the transaction’s invalidity, return of the property or restoration of the parties’ previous position are claimed.
It is necessary to determine which circumstances have already been established by final court acts and what significance they have for the new proceedings.
Nikolay NemkovManaging Partner, Konsultant Law Firm
NIKOLAY NEMKOV ON REAL ESTATE DISPUTES
We protect owners, sellers, buyers and other parties to transactions when a purchase and sale agreement, deed of gift or another real estate transaction is challenged in court. We analyze the documents, powers of attorney, calculations, correspondence, registration of title and the entire history of the parties’ relationship. We work both on the side of those who seek to have a transaction declared invalid and on the side of a respondent who needs to preserve its validity.
In real estate disputes, one incorrectly chosen legal construction can take the proceedings in the wrong direction. That is why we begin not with a promise to “challenge the transaction” or “keep the apartment”, but with the documents and the chronology. It is necessary to understand which right was violated, what actually happened, which claim corresponds to the situation and by what evidence it is supported.
We obtain the agreements, powers of attorney, EGRN extracts, correspondence, settlement documents and court acts.
We determine who, when and what actions performed before the transaction, during its execution and after registration.
We separate the emotional side of the conflict from the legal circumstances that actually have to be proved in court.
We check which facts are confirmed, which need to be proved and where the weak points of the position are.
We prepare the claim, objections, motions and other procedural documents depending on the side of the dispute.
We defend the chosen position in the court proceedings and respond to the evidence and arguments of the other party.
THE DEAL IS ALREADY DONE
Real estate disputes often arise after the agreement has already been signed, the money transferred, the title registered and the object actually passed to the other party.
One of the participants may claim that:
But a mere statement of unfairness or dissatisfaction with the transaction does not yet determine the outcome of the court case. It is necessary to establish the legal ground of the claims and check what confirms it.
DEFENSE OF THE RESPONDENT
After the sale of real estate, a party to the transaction sometimes changes its position and, months or years later, claims that the circumstances were completely different.
In such a dispute it is important to reconstruct the chronology:
We gather these circumstances into a single evidentiary position and defend the validity of the transaction.
POSITION OF THE CLAIMANT
Before going to court, we check which specific circumstance may have legal significance. It is not enough to simply state: “I changed my mind”; “I expected something different”; “I was promised”; “I did not get the expected result”. It is necessary to determine a specific ground for challenging the transaction and to understand by what evidence it can be confirmed. If there is no sufficient evidentiary base, the client should learn about this before a long court process begins.
When analyzing the dispute, we study, depending on the situation:
Not every document is needed in every dispute. The composition of the evidence is determined by the specific ground and the actual situation.
If the real estate was sold or acquired by a representative, the following may be important:
The mere existence of a power of attorney does not exclude a dispute. But the principal’s subsequent disagreement with the result of the transaction does not by itself mean its invalidity.
If a party claims that it concluded the transaction under the influence of fraud or material misrepresentation, the court assesses the specific circumstances. It is important to establish:
That is why a position cannot be built only on an emotional description of the conflict.
In some cases, one of the parties claims that at the moment of signing the agreement or power of attorney it could not understand the meaning of its actions or control them. In such disputes, it is necessary to assess the person’s condition precisely in the legally significant period. The mere existence of an illness, treatment, a difficult life situation or psychological stress does not yet answer the question of whether the person understood the content of a specific document at the moment of signing it. That is why evidence relating to the relevant period is especially important here.
After the transaction, a separate conflict may arise over whether the money was transferred and in what amount. But a dispute over settlements and a dispute over the validity of the transaction itself are not always the same legal question.
We check:
This makes it possible not to mix different methods of protection and to correctly determine the subject of the court dispute.
Repeated conflicts around the same real estate require special analysis. If a dispute over a power of attorney, agreement, ownership or the circumstances of a transaction was previously considered between the same participants, it is necessary to determine:
Sometimes the previous court process becomes one of the key elements of the defense in the next dispute.
Before filing a claim or preparing a defense, we separately check the deadlines for going to court.
The following may matter:
That is why the question of the deadline is assessed in relation to the specific claim and the facts of the case.
A REAL CASE OF KONSULTANT LAW FIRM
In case No. 2-6462/2025, the claimant repeatedly demanded that the purchase and sale agreement for a share in an apartment be declared invalid. It referred to fraud, misrepresentation, the absence of receipt of funds and its condition when signing the documents. Konsultant Law Firm represented the respondents. We used the previously issued court acts, the content of the power of attorney, the correspondence and the sequence of the claimant’s own actions. The court found no evidence of the alleged fraud and misrepresentation and fully refused the claim.
The transaction remained valid.
Bailiffs sold the client’s half share in an apartment while the owner did not receive the key documents of the enforcement proceedings. The court found substantial procedural violations, invalidated the auction of 14 February 2023 and the sale agreement of 14 March 2023, and restored the client’s ownership.
The claimant repeatedly tried to have the sale of a share in an apartment declared invalid, referring to fraud, misrepresentation and its condition. We represented the respondents. The court found no evidence of these circumstances and fully refused the claim.
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The firm has been practicing since 2007. We handle litigation and complex legal matters for businesses in Krasnoyarsk, Moscow and other regions of Russia.
We work both with those who want to challenge a transaction and with those whose transaction is being cancelled. For a claimant, it is important to understand before going to court: whether a ground exists and what confirms it. For a respondent: on what circumstances the claim is built, what evidence contradicts it and whether the transaction can be preserved. The purpose of the initial analysis is to determine a workable legal position before the client spends time and money on a knowingly wrong strategy.
A court result cannot be absolutely guaranteed.
HOW TO START
What transaction is being challenged, on what grounds and which documents are available.
We study the agreements, powers of attorney, settlement documents, correspondence and court acts.
We determine the legal ground, the evidence and the risks of the position.
We prepare the procedural documents and conduct the court proceedings.
MANAGING PARTNER

Managing Partner, Konsultant Law Firm
More than 20 years of practice in complex property and corporate disputes. Practicing insolvency practitioner.
A mere change of mind is not enough. To have a transaction declared invalid, a corresponding legal ground and evidence are required. First the documents and the circumstances of the transaction need to be studied.
No, such a conclusion does not follow automatically. It is necessary to check the terms of the agreement, the settlement documents and determine which claim corresponds to the circumstances: a dispute over settlements and the question of the validity of the transaction may have a different legal nature.
The possibility depends on the ground of the dispute, the content of the power of attorney, the representative’s authority and other circumstances. The mere fact that the transaction was concluded by a representative does not make it invalid.
What matters is not the mere existence of the illness but the person’s condition precisely at the moment of performing the legally significant action and the possibility of confirming that they did not understand the meaning of their actions or could not control them.
It is necessary to obtain the claim and its annexes, check the stated ground, the history of the transaction, the documents, the deadlines, the correspondence and the previous court acts. After that, the respondent’s position and the necessary evidence can be determined.
Yes, this must be checked separately. Final court acts may contain circumstances that are significant for the new dispute.
A court result cannot be absolutely guaranteed. But before filing a claim or preparing objections, the documents, the ground of the claims, the evidence, the deadlines and the court risks can be checked.
First we will check whether there is a sufficient ground and evidence for going to court.
Do not begin the defense with assumptions. Show the agreement, powers of attorney, settlement documents, correspondence and court materials. We will analyze what the other party’s claims are built on, which circumstances have already been confirmed and which position makes sense to take in court.