Is it property maintenance or the owner's own maintenance that the household lime wall falls off?

First, the maintenance of problems is the responsibility of the property. If the property is not maintained, it is dereliction of duty, and you can refuse to pay the property management fee.

Second, but the maintenance cost should be treated according to the specific situation. The warranty period of decoration works is generally two years. If it is still within the warranty period, the maintenance cost should be borne by the developer, otherwise it should be borne by you.

I saw your supplementary explanation.

This is caused by property negligence, but it has been two years, which is not good for you, because you have passed the retrospective period and the law no longer protects your right to win the case. At this time, you should take photos in time to collect evidence and hire a lawyer to file a lawsuit. I wonder if the warranty has passed now. If it is not easy to handle, you can also sue the property and the developer, which means that your right to claim is from now on, so it is not limited by the two-year period, which is equivalent to the injury you just discovered and you just lost it. But if the warranty period expires, then this matter will not be easy to handle. It's a little irritating to say. I suggest you go to a law firm for professional consultation.