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HomeAll Real CasesEastern China Court Rules Developer Liable for Unjust Enrichment on Water Meter Fees of 1200 Yuan

Eastern China Court Rules Developer Liable for Unjust Enrichment on Water Meter Fees of 1200 Yuan

All Real CasesMay 29, 2026 4 min read

Eastern China Court Rules Developer Liable for Unjust Enrichment on Water Meter Fees of 1200 Yuan

Case Overview
A homeowner in Eastern China successfully sued a real estate developer for unjust enrichment after the developer collected 1200 yuan in water meter fees beyond the agreed purchase price. The court found that the developer had improperly charged residents for infrastructure that should have been included in the sale price, ordering repayment plus interest. The case highlights the legal boundaries of developer fee collection in property transactions.

Case Background and Facts
The plaintiff, Mr. Luo, purchased an affordable housing unit from the defendant, a real estate development company, in 2003. During the property handover process, the defendant charged Mr. Luo 1200 yuan under the label “water meter collection fee.” The defendant issued a formal invoice for this charge. For approximately seven years, Mr. Luo paid this amount without questioning its validity.

In 2010, Mr. Luo learned through community notices that other residents had filed lawsuits challenging the same fee. After inquiring with property management, he discovered that the 1200 yuan charge might constitute unjust enrichment. The defendant refused to refund the amount, prompting Mr. Luo to file a lawsuit seeking the return of 1200 yuan plus interest of 501.12 yuan calculated from April 17, 2003, to July 16, 2010, at an annual rate of 5.76 percent.

Court Proceedings and Evidence
The court heard the case on January 18, 2011, with both parties represented by legal counsel. Mr. Luo submitted several pieces of evidence, including the commercial housing purchase contract, property ownership certificate, the invoice showing the 1200 yuan fee, and a prior court judgment from a related case that had deemed similar charges as unjust enrichment.

The defendant argued that the claim was time-barred by the two-year statute of limitations, noting that the fee was collected in 2003 and the plaintiff did not object until 2010. The defendant also claimed the fee was legitimate, explaining that after the provincial pricing authority approved the housing price in December 2001, the company modified the design to install smart water meters as required by municipal policy. This change increased costs by approximately 1300 yuan per unit, and the 1200 yuan fee merely covered actual expenses paid to contractors and the water company.

The defendant submitted construction drawings, pricing approval documents, engineering change orders, completion drawings, cost verification reports, and fee calculation tables to support its position.

Court Findings and Judgment
The court identified two key issues. First, whether the defendant’s collection of the water meter fee constituted unjust enrichment. The court held that water supply facilities are essential infrastructure for normal property use and are part of a developer’s contractual obligation. Since the purchase contract contained no special provision regarding water meter fees beyond the sale price, the court determined that the purchase price already included the cost of such infrastructure. The provincial pricing authority’s response letter further confirmed that the developer’s fee collection was an improper price increase.

Second, the court addressed the statute of limitations defense. Citing relevant judicial interpretation, the court noted that the limitation period for unjust enrichment claims begins when the party knows or should know about the unjust enrichment and the responsible party. The defendant failed to prove that Mr. Luo knew or should have known the fee was improper when it was collected in 2003. The court accepted Mr. Luo’s claim that he only discovered the unjust nature of the fee in 2010 through community notices about prior cases.

The court ordered the defendant to return the 1200 yuan within ten days of the judgment taking effect, plus interest at 5.76 percent annually from April 18, 2003, until the payment date. The defendant was also ordered to bear the court costs.

Key Legal Principles
The court applied the principle that developers cannot charge separately for essential infrastructure that is reasonably expected to be included in the property sale price. Unjust enrichment occurs when one party benefits without legal basis at another’s expense. The statute of limitations for unjust enrichment claims begins only when the claimant actually discovers or reasonably should discover the wrongful nature of the payment, not when the payment was originally made.

Legal References
General Principles of the Civil Law of the People’s Republic of China, Article 92
Supreme People’s Court Opinions on Implementing the General Principles of the Civil Law (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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