Core Viewpoint - Harbin has implemented a new regulation to enhance the transparency of real estate sales, requiring developers to clearly disclose the building area, usable area, and shared area of properties to protect consumer rights [1] Group 1: Regulatory Changes - The Harbin Municipal Housing and Urban-Rural Development Bureau has issued a notice mandating real estate developers to publicly display the building area and usable area of each property at sales offices [1] - Developers must also indicate the shared area and the basis for its calculation, increasing transparency in property sales [1] - When signing the property sale contract, developers are required to specify the building area, usable area, and corresponding unit prices [1] Group 2: Financial Regulations - For pre-sold properties, developers must use a regulated account as the sole collection account for pre-sale funds, prohibiting the use of non-regulated accounts [1] - All forms of payment, including full payments, deposits, down payments, and loans, must be deposited into the regulated account, preventing developers from transferring funds to other accounts [1] Group 3: Market Trends - The topic of shared area has gained significant attention, with various cities introducing new regulations regarding residential land area calculations and shared space [2] - High usable area has become a new trend in the real estate market, with developers having more flexibility in unit design [3] - Buyers are increasingly favoring properties with higher usable area ratios, indicating a shift in consumer preferences towards transparency and value in property purchases [2][3]