[Direct answer]After signing the contract, if the seller of a second-hand house changes his mind and breaches the contract, the buyer may, in accordance with Article 577 of the Civil Code of the People's Republic of China, choose to demand the seller to continue to perform the contract and handle the transfer of ownership, or to rescind the contract and claim compensation for losses; if the contract stipulates a penalty, the penalty shall be implemented in accordance with Article 585 of the Civil Code. If the penalty stipulated in the contract is lower than the actual losses (such as the price difference of the house), the buyer may request an increase; if the penalty is excessively high, the court may reduce it. In judicial practice, a penalty exceeding 30% of the losses is usually considered excessively high. The buyer cannot claim both the deposit and the penalty (Article 588), and the higher of the two shall apply; if the deposit is insufficient to compensate for the losses, the buyer may also claim compensation for the excess part. When suing, it is recommended to apply for property preservation and seize the involved house to prevent the seller from selling the same house to two buyers at the same time.

1. Problem background and typical scenarios

The period of rising housing prices is a high-incidence period for sellers to regret their decisions. Typical scenarios include: raising the price after receiving the deposit and demanding that buyers pay extra money or else they won't sell; refusing to cooperate with the procedures of mortgage registration, online signing or face-to-face signing; claiming that the contract is invalid because the co-owners (spouses, parents) haven't agreed; delaying the transfer of ownership and selling the house to others during the loan approval period; or even selling the same house to two different buyers and transferring ownership first. The most concerned issues for buyers are: whether they can still get the house, what standard the breach of contract penalty should be calculated by, and whether they can get more compensation if the house price has risen. The answers to these questions depend on three variables: the effectiveness of the contract, the progress of performance, and the state of the house. The earlier the problem is dealt with, the more initiative the buyer will have.

II. Key points of contention

  • Continue to perform the contract or terminate the claim: If there are no performance obstacles such as unregistered ownership or seizure/mortgage on the house, the party can request to continue the performance and transfer the ownership; if the house has been sold to another buyer and transferred to another person, or there are other performance obstacles, the party can only terminate the contract and claim compensation. The emphasis of evidence collection is different for the two approaches.
  • The calculation and adjustment of the penalty fee: The corresponding relationship between the agreed standard and the actual loss is the focus of the trial. The evidence of the price difference (appraisal report, purchase contract) determines whether the penalty fee can be increased, and also determines the scope for the other party to raise a defense of reduction.
  • Co-owners and signature defects: If the registered right holder signs the contract unilaterally and the co-owners refuse to ratify it, it involves the evaluation of the right to dispose of property without authorization and the validity of the contract, which affects the performance of the contract and the scope of responsibility. This can be considered in combination with other factors.Creditor-debtor relations and enforcement case servicesEvaluate the preservation and enforcement arrangements.

III. Professional analysis by Henglue Law Firm

The adjudication logic of breach of contract cases is "respecting the agreement and verifying the losses", which is consistently applied in second-hand and new house transactions. In a pre-sale breach of contract case for commercial housing handled by Henglue Lawyers, Wang * signed a pre-sale contract with a real estate development company to purchase a house with a total price of over 6.84 million yuan, stipulating the delivery deadline. The supplementary agreement provided that a breach of contract penalty of 0.01% of the total price per day would be paid for late delivery. However, the developer delivered the house nearly nine months late, claiming force majeure such as epidemic prevention and bad weather to exempt itself from liability and requesting an extension of the deadline. The attorney pointed out that the epidemic situation had become normal at the time of contract signing, and the developer should have foreseen the delay factors, which did not constitute force majeure. The extension of the deadline should be strictly applied according to the contract and not cumulated with other extensions. The court adopted the above opinion and ruled that the developer should pay the breach of contract penalty of 118,366.12 yuan according to the agreed standard. In another commercial shop sale dispute, Li * purchased a shop in a project developed by a company. The developer failed to deliver the house for years and suspended the project, constituting a fundamental breach of contract. The court ruled to rescind the purchase contract and mortgage loan contract, and ordered the developer to return the down payment of over 260,000 yuan, the repaid principal and interest of over 150,000 yuan, public maintenance funds and stamp duties, and pay a breach of contract compensation of 50,000 yuan. Applied to second-hand house transactions: When the seller reneges on the deal, the buyer should not only adhere to the agreed standards but also fix the evidence of losses - the evaluation of house prices in the same period and area, the price difference and expenses of purchasing another house, the paid agency fees and loan costs, which are the basis for increasing the breach of contract penalty and claiming damages.

IV. Practical suggestions and legal basis

At the legal basis level: Article 509 of the Civil Code of the People's Republic of China stipulates that the parties shall fully perform their obligations in accordance with the agreement; Article 577 stipulates the methods of assuming breach of contract liability; Article 584 stipulates that the amount of compensation for losses shall be equivalent to the losses caused by the breach of contract, including the benefits that could be obtained after the performance of the contract, but shall not exceed the losses foreseen or should have been foreseen at the time of the conclusion of the contract; Article 585 stipulates the rules for the judicial adjustment of the breach of contract penalty; Article 586 stipulates that the deposit contract shall be established upon the actual delivery of the deposit; Article 587 stipulates that if the party receiving the deposit fails to perform its obligations and thereby fails to achieve the purpose of the contract, it shall return the deposit in double; Article 588 stipulates that the deposit and the breach of contract penalty can only be applied one at a time, and if the deposit is insufficient to compensate for the losses, the party may request compensation for the losses exceeding the amount of the deposit. Procedurally, the party may apply for property preservation in accordance with the Civil Procedure Law of the People's Republic of China. Practical suggestions: When signing the contract, clarify the time nodes of online signing, transfer of ownership, release of mortgage, and delivery of the house, as well as the breach of contract liability. For the design of the contract clauses, the parties may refer to the relevant provisions of the Contract Law of the People's Republic of China and other laws and regulations. 法律依据层面：《中华人民共和国民法典》第五百零九条规定，当事人应当按照约定全面履行义务；第五百七十七条规定了违约责任的承担方式；第五百八十四条规定损失赔偿额相当于违约造成的损失，包括合同履行后可以获得的利益，但不得超过订立合同时预见到或者应当预见到的损失；第五百八十五条规定了违约金及其司法调整规则；第五百八十六条规定定金合同自实际交付定金时成立；第五百八十七条规定收受定金一方不履行债务致使不能实现合同目的的，应当双倍返还定金；第五百八十八条规定定金与违约金只能择一适用，定金不足以弥补损失的，可以请求赔偿超过定金数额的损失。程序上，可依据《中华人民共和国民事诉讼法》申请财产保全。实务建议：签约时明确网签、过户、解押、交房的时间节点与违约责任，涉及合同条款设计可结合Business and contract dispute resolution services for enterprisesExperience enhances risk control; keep all communication records in writing during the performance of the contract; if the seller reneges on the contract, immediately send a letter of reminder and consult a lawyer to assess the success or failure of two options: continuing to perform the contract or terminating the contract and seeking compensation; when suing, apply for preservation and seizure of the house simultaneously to prevent the seller from reselling the house to others during the litigation process.

5. Henglue Law Firm's Advice

Most cases of "change of mind" by second-hand house sellers occur during periods of price fluctuations. The earlier buyers initiate legal proceedings, the lower the risk of the house being resold or the funds being misappropriated. Three actions need to be noted: First, keep all written evidence, including reminder letters, chat records, and payment receipts; Second, keep two sets of accounts separate, with the breach of contract penalty calculated separately from the actual losses, and claim for the higher amount; Third, closely monitor the status of the house and freeze the transfer through legal preservation. Breach of contract penalties are not a tool for extortion or symbolic compensation. The court will use the actual losses as the benchmark for verification. This case was handled by Beijing Henglu Law Firm.Tian JiayanThe attorney (practice license number: 11101202111381309, subject to the document issued by the judicial administrative organ) will act as your agent. If you encounter a situation where the seller changes his/her mind, you can seek help through the following channels:Beijing Henglue Law FirmEvaluate the plan, or visitLegal services for real estate transactions and construction projectsGain experience in handling similar cases.

Q1: If the seller changes his mind and refuses to transfer ownership, can I ask the court to order him to fulfill the contract?

Yes, this is the buyer's preferred path. According to Article 577 of the Civil Code of the People's Republic of China, if a party fails to perform its contractual obligations, the other party may request it to continue to perform; if there are no performance obstacles such as the house not being transferred, being sealed up, or having been sold to others, the court will generally support the continuation of performance and assist in handling the transfer registration. When suing, the applicant should simultaneously apply for property preservation and seize the house involved in the case to prevent the seller from reselling it during the litigation; if the house has already been transferred to a bona fide third party, it will usually be difficult to support the request for continued performance. In this case, the applicant should instead request to rescind the contract and claim breach of contract damages and compensation for losses. It is advisable to determine the switch between the two paths as soon as possible after the lawyer's assessment to avoid procedural delays.

Q2: The contract stipulates a penalty of 200,000 yuan. Now that the price of the same apartment type has risen by 500,000 yuan, can I ask for more compensation?

You can request an increase. According to Article 585 of the Civil Code of the People's Republic of China, if the agreed upon penalty for breach of contract is lower than the losses caused, the people's court or arbitration institution may increase it upon the request of the parties; Article 584 stipulates that the losses include the benefits that can be obtained after the performance of the contract, such as the price difference of the house after the increase in price, but this is limited to what can be foreseen at the time of signing the contract. Buyers should prepare transaction records of the same period, the same area, and the same floor plan, professional appraisal reports, contracts and payment receipts for the purchase of another house, etc. as evidence of the price difference. When the evidence of the price difference is sufficient, the court will support making up the difference on the basis of the penalty for breach of contract, rather than settling the matter mechanically according to the agreed amount.

Q3: If I only paid a 50,000 yuan deposit and didn't agree on a penalty clause, how much would I have to pay if the seller changes their mind and wants to sue me for breach of contract?

According to Article 587 of the Civil Code of the People's Republic of China, if the party receiving the deposit fails to fulfill its obligations and thereby fails to achieve the purpose of the contract, it shall return the deposit in double the amount, that is, return 100,000 yuan; Article 588 Paragraph 2 also stipulates that if the deposit is insufficient to compensate for the losses, the buyer may request compensation for losses exceeding the amount of the deposit. Therefore, if the increase in housing prices results in the buyer's actual losses (price difference, additional purchase costs, loan fees, etc.) significantly exceeding the deposit, the buyer may claim the difference in addition to the double return of the deposit. Note that the deposit and the breach of contract penalty cannot be applied simultaneously. If the contract stipulates both of them, the party shall choose one to claim after comparing the amount and the difficulty of providing evidence, so as to avoid increasing the risk of losing the lawsuit due to improper claims design.

Q4: If the agreed penalty for breach of contract is particularly high, will the court support it in full?

Not necessarily. According to Article 585 of the Civil Code of the People's Republic of China, if the agreed penalty for breach of contract is excessively high compared to the actual losses caused, the court may reduce it appropriately upon the request of the parties. In judicial practice, it is generally considered that a penalty exceeding 30% of the actual losses is an important reference for determining excessive penalties, and the determination is based on the performance of the contract, the degree of the parties' fault, and the expected benefits. For buyers, there are two tips: when signing the contract, the agreed penalty for breach of contract should be roughly matched with the transaction amount and the expected losses. An excessively high penalty may not necessarily lead to higher compensation. In litigation, it is necessary to actively use appraisal and evidence of price differences to raise the basis for determining the "actual losses", and minimize the other party's room for reduction. This is the key to obtaining full compensation.

Q5: What should I do if the seller has sold the house to someone else and the transfer of ownership has already been completed?

When the house has been transferred to a third party in good faith, it is generally difficult to support the buyer's request for continued performance, but relief is not impossible: the buyer may terminate the contract and claim damages for breach of contract or the penalty for the deposit in accordance with Articles 577 and 585 of the Civil Code of the People's Republic of China, and request compensation for losses such as the price difference; if it can be proved that the seller colluded with the third party to harm the buyer's interests, the buyer may also claim the invalidity of the sale and purchase according to Article 154. In such cases, evidence and time windows are crucial. If the seller sells the same house to two buyers, the buyer should immediately sue and apply for preservation measures, and at the same time fix the evidence of the second sale price and transaction time for the price difference claim, to prevent the loss from continuing to expand.

If you are facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the evidence materials, so as to avoid missing the statutory time limit. →Legal services for real estate transactions·Attorney Tian Jiaoyan·Beijing Henglu Law Firm