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HomeAll Real CasesHomebuyer Wins Refund of 1200 Yuan Water Meter Fee in Unjust Enrichment Case

Homebuyer Wins Refund of 1200 Yuan Water Meter Fee in Unjust Enrichment Case

All Real CasesMay 29, 2026 4 min read

Homebuyer Wins Refund of 1200 Yuan Water Meter Fee in Unjust Enrichment Case

Case Overview
A homeowner in Eastern China successfully sued a real estate development company for unjust enrichment, recovering 1200 yuan paid as a water meter fee. The court ruled that the developer had improperly charged the fee beyond the contracted housing price, and the claim was not barred by the statute of limitations. The judgment also awarded interest from the date the fee was paid.

Case Background and Facts
Ms. Zhao purchased an affordable housing unit from Zhejiang Economic Housing Development and Construction Company in 2003. During the property handover process in April 2003, the developer charged her 1200 yuan under the label of water meter collection fee. The developer issued a special invoice for this charge. For several years, Ms. Zhao did not question this payment. In 2010, she learned from other homeowners in her community that some residents had filed lawsuits to recover similar charges. After inquiring with property management, she discovered that the 1200 yuan fee might constitute unjust enrichment. The developer refused to refund the money, leading Ms. Zhao to file a lawsuit demanding the return of 1200 yuan plus interest of 501.12 yuan calculated from April 22, 2003, to July 21, 2010, at an annual rate of 5.76 percent.

Court Proceedings and Evidence
The court heard the case in January 2011. Ms. Zhao presented a property purchase contract, her property ownership certificate, the invoice showing the 1200 yuan payment, and a prior court judgment from a related case. The developer submitted construction drawings, government price approval documents, engineering change orders, completion drawings, cost verification reports, and fee calculation tables. The developer argued that the water meter system was not included in the original construction plans approved by the provincial pricing authority in 2001. After the government mandated individual water meters with centralized reading, the developer modified the design, incurring additional costs of over 1300 yuan per unit. The developer claimed the 1200 yuan charge was reasonable and passed on to the installation contractor and water company.

Court Findings and Judgment
The court identified two main issues. First, whether the developer’s collection of the water meter fee constituted unjust enrichment. The court held that water supply facilities are essential infrastructure for habitable housing and are part of the developer’s contractual obligations. The purchase contract contained no special provision for separate water facility charges. The provincial pricing authority had already determined that the developer’s fee collection was an improper price increase outside the approved affordable housing price. Therefore, the developer obtained the 1200 yuan without legal basis, constituting unjust enrichment. Second, regarding the statute of limitations, the court applied the rule that the limitation period for unjust enrichment claims begins when the claimant knows or should know of the unjust enrichment and the responsible party. The developer failed to prove that Ms. Zhao knew or should have known the fee was improper at the time of payment. The court accepted Ms. Zhao’s claim that she only learned of the unjust enrichment in 2010 when related cases were publicized in her community. Her lawsuit filed in December 2010 was within the statutory period. The court ordered the developer to return the 1200 yuan plus interest at 5.76 percent per annum from April 23, 2003, until the date of payment.

Key Legal Principles
The court applied the principle of unjust enrichment under civil law, which requires a party who benefits without legal cause at another’s expense to return the benefit. The court also clarified that the statute of limitations for unjust enrichment claims runs from when the injured party actually discovers or reasonably should discover the unjust enrichment, not from the date of the original payment.

Practical Insights
This case illustrates that homebuyers should carefully review all charges imposed during property handover. Charges labeled as collection fees that are not part of the contract may be recoverable as unjust enrichment. The statute of limitations for such claims may not begin until the homeowner has actual knowledge of the improper nature of the charge, which can protect consumers who discover wrongdoing years later. Developers should ensure all charges are clearly authorized by contract or law to avoid liability.

Legal References
General Principles of Civil Law of the People’s Republic of China, Article 92. Opinions of the Supreme People’s Court on Several Issues concerning the Implementation of the General Principles of Civil Law of the People’s Republic of China (Trial Implementation), Article 131.

Disclaimer
This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for specific legal matters.

This article is rewritten from public court documents for general reading only. It does not constitute legal advice. Consult a qualified attorney for specific legal matters.

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