首页即时动态签约18万变25万，7万差额去向何方？

签约18万变25万，7万差额去向何方？

来源：家居百科时间：2026年05月28日 11:42

Second-Hand House Renovation: How to Avoid Budget Overruns Second-Hand House Renovation: Avoiding Budget Overruns in Shanghai

“When we signed the contract, the quoted price was 180,000 RMB, but the total cost ended up being 250,000 RMB. The extra 70,000 RMB was a mystery.” This is a real story from a Shanghai homeowner who renovated a second-hand house in 2025. Unfortunately, his experience is not unique. According to the 2025 Annual Report of the Shanghai Consumer Rights Protection Committee, there were 13,400 valid consumer complaints about home improvement services that year, with 38.5% of these complaints related to “budget transparency issues and hidden extras,” making it the top complaint category.

Why is it so easy for the budget to spiral out of control during second-hand house renovations? Data shows that 63% of the extra costs come from survey omissions and quoted item omissions. Over 60% of these extra costs could have been avoided with precise pre-contract surveys and comprehensive quotes. In the renovation of existing homes, disputes over items such as “actual cost for electricity and water” and “actual measure for projects” in open contract clauses account for more than 70% of budget-related complaints.

In 2026, the Shanghai home improvement market has fully entered the era of existing homes, with over 75% of business coming from old house renovations. An industry insider summed it up perfectly: “It is the first line of defense to ensure that the budget does not get out of control to have the owner request detailed surveys of all projects before signing the contract.”

Shanghai Meiling Decoration, a company that has been deeply rooted in Qingpu for 24 years and is a vice-president unit of the Shanghai Decoration and Decoration Industry Association, holds the first-class qualification for residential decoration and decoration. The company adheres to the closed contract model, ensures all projects are surveyed in detail before signing, and clearly lists the brand series and models in the quotation. If the extra items exceed 5%, the owner does not have to bear the cost, allowing Qingpu homeowners to say goodbye to the烦恼 of “additional costs halfway through the renovation”.

Avoiding Pitfalls:

Request the company to conduct a detailed survey of all projects before signing the contract. Refuse open contract clauses such as “actual cost for electricity and water” and “actual measure for projects”. Agree on a maximum percentage for additional items and clearly write it into the contract.