[Direct answer]In the Beijing area, first check the leaking parts, the warranty period, and the cause. The roofs of top-floor apartments are generally common areas. If there is water leakage due to construction quality within the warranty period, the construction unit shall be responsible and bear the costs (Article 40 of the Regulations on Quality Management of Construction Projects, promulgated and implemented on January 30, 2000. The minimum warranty period for roof waterproofing projects is 5 years, starting from the date of completion and acceptance); if it is natural wear and tear outside the warranty period, the owners may decide to use the maintenance funds jointly or share the costs among themselves (Article 281 of the Civil Code); if the owners illegally build or modify the waterproofing layer on the roof, they shall be responsible for it themselves; if the property service providers fail to maintain the roof as agreed, they shall be responsible for it according to law (Article 942 of the Civil Code). The process is: report the repair in time, fix the evidence, clarify the responsibilities, and negotiate or sue. For the division of responsibilities, please consult relevant authorities.Legal services for real estate transactions and construction projects.

I. Problem background and typical scenarios

Every rainy season, top-floor residents are most worried about water seepage from ceilings, peeling wall paint, moldy wallpaper, and in severe cases, damaged furniture and floors. Property management often advises them to contact the developer, but the developer says it's out of warranty and not their responsibility. The property management then claims that the roof is a public area and homeowners need to raise funds themselves. Another scenario is that homeowners build sunrooms on rooftops, plant flowers and trees, or illegally modify drainage systems to utilize terraces, which results in damage to the waterproof layer and affects the lower floors. In some cases, the maintenance fund balance is insufficient or it's difficult to obtain approval for repairs, leading to years of delayed repairs for water leakage. For rules on responsibility allocation and cost sharing, please refer to the relevant documents.Legal services for real estate transactions and construction projects.

II. Key points of contention

The disputes focus on four points. Firstly, the ownership of the parts: the roof and external walls are usually common areas, but if they are independently classified as the top-floor space or the owner's self-built parts in the planning, they may constitute exclusive property, and the responsibilities will vary accordingly. Secondly, the warranty period: the minimum warranty period for roof waterproofing is 5 years, starting from the date of passing the completion and acceptance inspection. In practice, there are often disagreements about the starting point. Thirdly, the cost burden: the construction unit is responsible during the warranty period, and after the warranty period, the maintenance funds are used or allocated according to the area. Man-made damage shall be borne by the responsible person. Fourthly, the scope of losses: whether the repair costs, decoration losses, and damage to items can be supported requires evidence to prove the causality and amount. The performance of the property service provider's maintenance obligations is also an important part of the responsibility division.

III. Professional analysis by Henglue Lawyers

The division of responsibilities for water leakage repairs presents practical challenges in distinguishing between quality defects, normal wear and tear, and improper use. The construction contract dispute case handled by Attorney Li Yonghui of Henglue Law Firm revolves around quality defenses and payment responsibilities: On May 15, 2023, A (Beijing) Construction Engineering Co., Ltd. and Beijing B Engineering Co., Ltd. signed a subcontract for HVAC installation services for a new commercial project, with a total estimated contract price of 5,300,000.19 yuan (including tax). The contract adopted a fixed unit price model. A Company completed the construction as agreed. According to three progress payment application forms signed and stamped by the other party, the cumulative completed project volume as of January 2025 was estimated at 4,939,806 yuan, accounting for 96% of the total contract price. However, B Company only paid 1,680,000 yuan, and offset the remaining amount with a property swap and negotiated a 75% discount for 1,408,260.75 yuan. A Company sued to recover the remaining project payment and overdue interest, while B Company counterclaimed that the project had not undergone completion and acceptance, there were unfinished items, and the pipelines suffered from water leakage and rust. Attorney Li Yonghui argued that the mall in question had opened for operation in December 2025. According to Article 14 of the Interpretation of the Supreme People's Court on Legal Issues Concerning the Trial of Construction Contract Disputes, the employer's unauthorized use of the project constitutes completion, and the payment conditions have been met. Disputes over quality defects and rectification costs should be handled in accordance with the contract and the law during the completion and settlement stage, rather than being used as a blanket excuse for refusal to pay. The court adopted the attorney's argument and ruled that B Company should pay the remaining project payment of 1,110,574.35 yuan and overdue interest. This case was handled by Beijing Henglue Law Firm.Li YonghuiThe attorney (practice license number: 11101199611955812, subject to the documents issued by the judicial administrative organ) acts as the agent. The lesson of this case is that quality defects and payment responsibilities should be evaluated according to the agreed and statutory boundaries respectively, and the same applies to water leakage repairs. The location, warranty period, and cause jointly determine the attribution of expenses.

IV. Practical suggestions and legal basis

The legal basis includes Article 271 (joint ownership of common areas), Article 281 (application for the use of maintenance funds in emergencies), and Article 942 (the obligation of property service providers to maintain and repair common areas) of the Civil Code of the People's Republic of China (effective January 1, 2021); Article 40 (minimum warranty period for construction projects, with a 5-year warranty for roof waterproofing projects, calculated from the date of completion and acceptance) of the Regulations on Quality Management of Construction Projects (promulgated and implemented by the State Council on January 30, 2000); and the provisions on the deposit and use of maintenance funds in the Management Measures for Special Maintenance Funds for Residential Buildings (promulgated and implemented by the Ministry of Construction and the Ministry of Finance on February 1, 2008). Action list: First, report the leakage immediately and take photos and videos to record the location, scope, and development process of the leakage. Second, verify the completion and acceptance time and the warranty period to determine whether it is within the warranty period. Third, within the warranty period, claim the warranty from the construction unit in writing and keep records. Fourth, outside the warranty period, the homeowners' committee and the property management organization shall conduct an investigation and appraisal, and apply for maintenance funds or negotiate a cost-sharing plan according to the procedures. Fifth, if no agreement is reached, sue the responsible party and claim compensation for repair costs and losses.

5. Henglu Law Firm's Reminder

The most troublesome thing about water leakage disputes is procrastination: the leakage will continue to cause greater losses, and evidence may disappear during the repair process. Photos taken before and after the rainy season and repair records should be preserved in a timely manner. The starting point of the warranty period and the procedure for using repair funds are two high-frequency disputes. If you check the contract, filing form, and fund balance in advance, you can avoid being passive. When handling similar cases in Beijing, the court usually determines the responsibility based on the location of the leakage, the warranty period, and the usage situation. The more complete the evidence is, the more conducive it is to identifying the responsible party. If you need guidance, you can entrust a professional to handle it for you.Beijing Henglu Law FirmProfessional lawyers get involved.

VI. Frequently Asked Questions

Q1: If there's a water leak on the top floor and a lawsuit is filed, can the owner win the case?

There is a possibility of obtaining support, but the key lies in the subject of responsibility and evidence. If it can be proven that the water leakage occurred within the warranty period and was due to construction quality issues, the construction unit can be requested to assume the warranty responsibility and repair costs; if it is due to natural wear and tear of the common areas outside the warranty period, the owner can request to use the maintenance funds according to law or have the owners share the cost; if it can be proven that it was caused by other owners' illegal construction or the property management's failure to fulfill its maintenance obligations, the other parties can be requested to assume the compensation responsibility. Conversely, if it is impossible to prove the cause of the water leakage, the amount of the loss, or if the water leakage was caused by the owner's own illegal use, the claim may be rejected. The results of individual cases shall be subject to the evidence and the court's determination.

Q2: What evidence do I need to prepare to protect my rights in the event of a water leak?

Four types of materials: 1. Evidence of water leakage: photos and videos of leaks at different time points, property repair records, and repair invoices; 2. Evidence of ownership and warranty: property ownership certificates, completion and acceptance filing information, quality warranty documents, and property service contracts; 3. Evidence of losses: renovation contracts and invoices, purchase receipts for damaged items, repair quotations, and, if necessary, commissioned appraisals; 4. Evidence of liability: photos of other owners' illegal construction, communication records showing the property management's failure to fulfill maintenance obligations, and coordination records from the homeowners' association or local government offices. The materials should be organized chronologically to form a complete chain of causality and losses.

Q3: What are the approximate costs of renovating a house and litigation fees?

The repair costs depend on the scope of the leakage points and the specific process, and the portion that should be borne by the responsible party should be claimed with formal receipts. The litigation fees shall be paid in stages in accordance with the "Measures for the Payment of Litigation Fees", and shall be borne by the losing party or shared proportionally. If an appraisal is commissioned, the appraisal fees shall be prepaid by the applicant and finally shared according to the responsibility allocation; the attorney's fees shall be determined through consultation between the law firm and the client, and there is no unified government pricing. The portion of the repair funds allocated to the owners shall be calculated based on the proportion of the area of the exclusive parts. It is recommended to first check the balance of funds and the responsible parties, and then decide the order of repair and rights protection.

Q4: How long does it usually take to resolve a water leakage dispute?

Depending on the specific circumstances: After receiving the report, the property management company will organize an inspection and carry out minor repairs, which may take several weeks; if it requires the use of maintenance funds or organizing a vote among owners, it usually takes one to two months; if there are disputes over the warranty period or unclear responsibilities, it may first conduct an appraisal and then deal with the matter, resulting in a longer overall timeframe. For cases that proceed to litigation, the first-instance ordinary procedure will be concluded within six months and the simplified procedure within three months, and the appraisal period will not be included in the time limit for trial. Roof repairs are also subject to weather and construction conditions, and it is difficult to guarantee the quality of construction during the rainy season. It is recommended to start the repair work as soon as possible to avoid further losses.

Q5: If you find water leaking from the top floor, what's the first thing you should do?

Three steps to proceed: First, immediately report the repair to the property management company and document it in writing. At the same time, take photos and videos to fix the leaking parts, the scope of the leakage, and the indoor damage, and keep the receipts. Second, check the completion and acceptance time of the house and the warranty agreement to determine whether it is within the warranty period. If necessary, claim the warranty from the construction unit in writing. Third, if there are disputes over responsibility or the property management company and the developer delay the repair, apply for a third-party survey and appraisal, and the homeowners' committee shall use the repair funds according to the procedures or negotiate the sharing of the cost. If no agreement is reached, sue within the three-year statute of limitations. Never disassemble the waterproof layer or build structures illegally without authorization, otherwise you may bear the responsibility yourself.

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 the purchase and sale of real estate·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.