Does the property company have the right to post a list for private cars?

No, you can communicate with the property management company on this issue. If communication fails, it can be solved through relevant departments. Regarding the sticker you mentioned, some property companies will use it when they demand property fees, so it is mentioned in the case analysis of IOT recruitment that this needs to be negotiated with you. Otherwise, isn't it annoying to post it on your car every time?