Balcony seal does not meet the property requirements. Does the property have the right not to refund my decoration deposit?

First of all, you need to know whether the property will not refund the deposit or wait until you finish the rectification. It is wrong not to return it.

You must rectify the balcony according to the requirements of the property. If you don't rectify as required, the property has the right to apply to the competent department (urban management) for compulsory rectification, but your deposit must be refunded after rectification. The property is not a law enforcement department, and your deposit cannot be deducted.