Can developers and properties change the winning bid price of property fees?

The price can be adjusted at will, so what is there to bid for?

Moreover, according to the relevant laws and regulations, as the delivery standard when buying a house, the property fee is written in the purchase contract, and it is also approved and collected by the housing management department after approval and filing. It can't be changed by two people sitting together and talking for a day.

Moreover, the adjustment of property fees is also a process. According to the management method of property service charges, the adjustment of property fees can only be changed after the owners' meeting agrees.