[Direct answer]In the Beijing area, if the upstairs renovation causes cracks in your own walls and floors, you can protect your rights based on the principles of neighborly relations and tort liability. According to Article 288 and Article 1165 of the Civil Code of the People's Republic of China (effective from January 1, 2021), the owner of the adjacent property shall not endanger the safety of others, and shall bear responsibility for infringing others' civil rights due to negligence; Articles 238 and Article 1167 stipulate the right to claim damages and remove obstacles. The protection path is as follows: First, fix photos of the cracks, the timeline of the upstairs renovation, and communication records. If necessary, commission a professional organization to determine the causality and losses. Then negotiate with the upstairs neighbors and the property management company. If no agreement can be reached, you can file a lawsuit with the court, claiming to stop the infringement, repair the damage, and seek compensation. Action guidance: Prioritize evidence and timelines to avoid difficulties in attributing responsibility after the renovation is completed.

I. Problem Background and Typical Scenarios

The noise from upstairs knocking on the wall, smashing the floor, and altering the layout causing cracks in the downstairs floor is a common neighborhood dispute during the renovation season. Typical scenarios include: the vibration caused by the demolition and modification of walls upstairs leading to cracks in the floorboards or ceilings; the damage to the waterproof layer caused by unscrupulous construction and subsequent leakage; the illegal addition of structures and overweight stacking causing cracks in the beams; and the fine cracks only being discovered by the downstairs residents after the renovation is completed, making it difficult to determine the cause and effect. Many owners find cracks when the upstairs renovation has already been completed, with no on-site comparison and lack of communication records, leaving them in a passive position when it comes to assigning responsibility. The core of such disputes lies in proving the causal relationship between the renovation activities and the resulting cracks. For relevant rules, please refer to the following document:Legal services for real estate transactions and construction projects.

II. Key points of contention

The controversy focuses on four points. Firstly, the causality: it is necessary to prove that the cracks were caused by the renovation on the upper floor, rather than the settlement of the building itself or existing defects, which is the most difficult and crucial part. Secondly, the degree of fault: whether the upper floor carried out unauthorized demolition and alteration, and whether it fulfilled its obligation of reasonable care, which affects the proportion of liability. Thirdly, the scope of losses: whether the construction costs of repairing the cracks and reasonable expenses such as temporary accommodation caused by the construction can be included. Fourthly, the allocation of the burden of proof: the injured party needs to initially prove that the damage coincides with the time, and if the cause is unclear, they can apply for an appraisal. In the judicial practice of Beijing, the renovation timeline and professional appraisals often determine whether the liability is established.

III. Professional analysis by Henglue Law Firm

The evidentiary logic of project quality and causality of damages is particularly evident in construction disputes. A construction contract dispute handled by Attorney Li Yonghui fully demonstrates the trial logic of quality defenses and evidence loops. On May 15, 2023, A (Beijing) Construction Engineering Co., Ltd. and Beijing B Engineering Co., Ltd. signed the "Beijing Municipal Housing Construction and Municipal Infrastructure Project Labor Subcontracting Contract", stipulating that A Company would undertake the HVAC project of a new commercial project in Jinshan District, Shanghai City. The estimated total contract price, including taxes, was 5,300,000.19 yuan. As of January 2025, A Company had completed a total estimated project volume of 4,939,806 yuan, accounting for 96% of the total contract price, but B Company only paid 1,680,000 yuan and offset part of the project payment with housing. B Company argued that the project had quality issues such as pipe leakage and rust, and commissioned a third party to rectify them, claiming to deduct the rectification costs. Attorney Li Yonghui pointed out that the commercial plaza where the project is located opened and put into use in December 2025. According to Article 14 of the "Interpretation of the Supreme People's Court on Legal Issues Applicable to the Trial of Construction Contract Disputes" (effective January 1, 2021), if the employer uses the project without completing the acceptance, it shall be deemed that the project has been completed and the payment conditions have been satisfied; although B Company raised quality objections, it failed to form an evidence loop sufficient to deduct the payment. The court ordered B Company to pay the remaining project payment of 1,110,574.35 yuan and overdue interest. This case reminds us that in disputes involving project quality and damages, the claimant must build an evidence loop with construction records, inspections, and comparative evidence, otherwise it will be difficult to establish the claim; the same applies to disputes over cracks caused by neighboring renovations, where timelines and appraisals are the key to determining liability. This case was handled by Beijing Henglu Law Firm. 工程质量与损害因果的举证逻辑，在建设工程纠纷中体现得尤为充分。李永慧律师代理的一起建设工程合同纠纷，完整呈现了质量抗辩与证据闭环的审理逻辑。2023年5月15日，A（北京）建设工程有限公司与北京B工程股份有限公司签订《北京市房屋建筑和市政基础设施工程劳务分包合同》，约定由A公司承接上海市金山区某镇新建商业项目暖通工程，合同暂估含税总价5,300,000.19元。截至2025年1月，A公司累计完成工程量估值达4,939,806元，占合同总价96%，但B公司仅支付1,680,000元并以房屋抵偿部分工程款。B公司抗辩称工程存在管道渗水、锈蚀等质量问题并另行委托第三方整改，主张扣除整改费用。李永慧律师指出，案涉工程所在商业广场已于2025年12月开业投入使用，依照《最高人民法院关于审理建设工程施工合同纠纷案件适用法律问题的解释（一）》（2021年1月1日施行）第十四条规定，发包人未经竣工验收擅自使用的，视为工程竣工，付款条件成就；B公司虽提出质量异议，但未形成足以扣减款项的证据闭环。法院判令B公司支付剩余工程款1,110,574.35元及逾期利息。本案提示：涉及工程质量与损害争议，主张方必须以施工记录、检测与对比证据构建证据闭环，否则难以成立；邻里装修致裂纠纷亦然，时间线与鉴定才是归责关键。本案由北京恒略律师事务所代理。Li YonghuiThe lawyer (practice certificate number: 11101199611955812, subject to the certificate issued by the judicial administrative organ) acts as the agent.

IV. Practical suggestions and legal basis

The legal basis includes Article 238 of the Civil Code of the People's Republic of China (effective from January 1, 2021) on compensation for damage to property rights, Article 288 on the principle of neighborly relations, Article 296 on the prohibition of endangering the safety of neighboring real estate, Article 1,165 on fault liability, and Article 1,167 on removal of obstacles; the "Measures for the Management of Interior Decoration of Residential Buildings" (effective from May 1, 2002) on the prohibition of unauthorized alteration of load-bearing structures and standardized construction; and the "Regulations on Property Management" (amended on March 19, 2018) on the obligation to inspect and stop illegal activities. Action list: First, immediately take photos and videos of the cracks and mark the dates, preserving the state of the house before the upstairs renovation; Second, notify the upstairs and the property management in writing, requiring them to provide construction records and stop the activities; Third, list the damage and retain the repair quotations; Fourth, if there are major disputes over causality or amounts, commission a qualified agency for appraisal; Fifth, negotiate with evidence, and if unsuccessful, file a lawsuit to claim repair and compensation. For more details, please refer to the following link:Legal services for real estate transactions and construction projects.

5. Henglue Law Firm's Reminder

When seeking legal redress for construction defects, it's crucial to avoid the mistake of "waiting until the renovation is completed to settle accounts". After the upstairs unit is completed, it's harder to prove the causality. It is recommended to pay attention to abnormal sounds and cracks from the start of the renovation, take photos regularly, keep communication records, and immediately raise written objections and request the property management to intervene upon discovering any problems. At the same time, it's important to distinguish between natural settlement and construction-induced cracks: the former is usually caused by the building itself, while the latter requires proof of the time and location of the renovation. When handling similar cases in the Beijing area, it is recommended to seek legal assistance from a professional lawyer in time.Beijing Henglue Law FirmThe timeline was sorted out and the appraisal application was completed with the assistance of professional lawyers.

VI. Frequently Asked Questions

Q1: The renovation upstairs caused cracks in my wall. Can I be sure that he will compensate me for the damage?

Whether compensation can be obtained depends on the causality and evidence of fault, not the claim that "if the upstairs has undergone renovation, compensation must be paid". If it can be proven that the cracks were caused by the construction work on the upper floor and that the upper floor failed to fulfill its obligation of reasonable care, compensation for repair and damages can usually be claimed; if the cracks are due to the original settlement of the building or its own defects, it will be difficult to obtain support. The outcome of the case depends on evidence and appraisal, and no lawyer can unilaterally guarantee the amount of compensation. A solid foundation for determining liability requires a clear timeline of the renovation, photos of the cracks, and professional appraisal.

Q2: What evidence do I need to prepare for protecting my rights?

The five most crucial pieces of evidence are as follows: 1. Photos of the house's condition before renovation, to prove that the cracks did not exist previously; 2. Photos and videos of the cracks with dates during and after the renovation; 3. Communication and repair records with the upstairs neighbors and the property management; 4. Evidence of the construction activities carried out by the upstairs neighbors, such as demolition, alterations, and flooring work; 5. Causality and loss assessment reports, repair quotes, and invoices. The more evidence that can establish the connection between the "renovation activities" and the "resulting cracks," the easier it will be to determine liability.

Q3: How much does it cost to conduct a crack assessment and litigate in court?

The appraisal fees vary depending on the qualifications of the institutions and the specific projects. The assessment of causality and losses typically ranges from thousands to tens of thousands of yuan. Court fees are calculated based on the amount of the litigation request in accordance with the "Measures for the Payment of Litigation Fees" (State Council Decree No. 481, implemented on April 1, 2007). In summary, the fees are paid in stages, with half the amount charged in simplified procedures and half in mediation settlements. Attorney fees are determined through negotiation between the law firm and the client, with no unified government pricing. Providing sufficient evidence before litigation and facilitating mediation is usually more cost-effective than litigating all the way through.

Q4: How long does it take from discovering the cracks to receiving compensation?

When both parties cooperate and their responsibilities are clear, the dispute can be resolved through negotiation or mediation within a few weeks. If the case proceeds to litigation, the first-instance summary procedure will be concluded within three months, and the ordinary procedure within six months. However, if appraisal is required, the process will be extended accordingly, and the overall process often takes several months to more than a year. In similar neighborhood decoration damage disputes in the Beijing area, the appraisal process is often a time bottleneck. It is recommended that you pay attention to collecting evidence as soon as the decoration begins, to avoid the loss of evidence and difficulties in assigning responsibility after the work is completed.

Q5: The property management company says they can't handle it. How should I proceed with the matter?

Three steps to proceed: First, continuously request the property management company in writing to fulfill its duties of inspection, prevention, and reporting, and keep records of its passive responses, which can be used as evidence to assert the property management company's liability in the future; Second, file a complaint with the competent departments such as the housing and urban management authority against the upstairs illegal construction, and let the administrative authorities intervene; Third, entrust an appraisal to determine the causality and losses, and file a lawsuit in the local court with complete evidence, demanding the cessation of infringement, repair, and compensation. If the other party fails to fulfill its obligations after the judgment takes effect, you can apply for compulsory enforcement.

This article is written based on the common judicial interpretations in the Beijing area. If the case occurs in other regions, it is recommended to consult local lawyers to verify the regional differences.

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 Li Yonghui·Beijing Henglu Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and public adjudication rules, and is for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. If you encounter disputes, please consult a practicing lawyer in time.