There is no drainage pipe for outdoor air conditioning, and the property put a board on the platform on the second floor to receive water. Will the owner agree?

As long as it does not affect the normal life of the owner, the owner will not object, but if the behavior of putting wooden boards on the platform on the second floor affects the life of an owner or surrounding owners, then it will object.

Property management in the community, as long as it does not harm the interests of the owners, then the owners will not object. After all, no one wants to harm their own interests. When the property is in operation, it needs to negotiate with the owner and get the consent before starting the work.