How to defend the rights when the property is sued for failing to pay the property fee due to the quality of the house?

1) Commercial housing is also a commodity. For commodities, relevant national laws and regulations allow certain errors in commodities. If the error is within the scope permitted by laws and regulations, then the developer doesn't have to pay you any fees. If the error is outside the allowable range, you can negotiate with the developer to make up the difference for you.

2) As for the property management fee, it has nothing to do with the error of the house. In other words, the court will decide that you bought a house, which belongs to your private property, so if you buy a house, whether you live or rent it yourself, you have to pay the property management fee to the property management company on schedule, and you can't pay the property management fee all your life because the house is wrong. The court will decide that you have no reason not to pay the property management fee, so it won't work in the court and you will be at a disadvantage. Because the court will also think that you should pay the property management fee, the court will support the proposal of the property management company, so that you can pay all the property management fee and late payment fee in one lump sum within the time limit (generally speaking, within/0/5 days after the court ruling is issued).

In this case, you basically have no chance of winning. Only by preparing cash can we use money to eliminate disasters.