What if the property doesn't give the opposite phone number?

In this case, we can take measures such as communicating with the property, finding the signboard in the community and asking other neighbors.

1. Communicate with the property: explain why it is necessary to contact the neighbors across the street and ask them to provide their own contact information. You can emphasize your own needs and rationality, and hope that the property can understand and help.

2. Community bulletin board or bulletin board: If the property is unwilling to provide the contact number of neighbors, you can try to leave a message on the community bulletin board or bulletin board in the community to explain your needs and contact information, and hope that the neighbors opposite can contact you actively.

3. Ask other neighbors: If none of the above methods can get the contact information of neighbors, you can try to get it through other neighbors. You can communicate with other neighbors, ask them if they know the contact information of the neighbors across the street, and ask them to help you contact.