What if the property is not renovated and the property fee is not paid?

If the property is not renovated and the property fee is not paid, then you can ask the outside decoration company to repair and decorate your house. The property has no right to prevent outside companies from decorating your house. If the property management company doesn't let outside companies decorate your house, then you can find that the property has blocked the decoration company you invited, and you can report it directly.