Street naming and numbering

We are responsible for naming all streets and for the numbering or naming of properties within the Caerphilly county borough area.

We have a statutory responsibility to ensure that any new or amended street and property names and/or numbers are allocated logically and in a consistent manner.

Royal Mail has no statutory power to name a street, name or number a property or rename or renumber a property; however, it does have the sole duty of issuing or amending postcodes once the address details have been confirmed by the council.

Regulating the addressing of properties within the county ensures that consistency and accuracy is maintained and helps with service delivery and most importantly ensures emergency services can locate the address.

New Developments

Applying to add/rename/remove a name to an existing numbered property

If you would like to officially rename or add a name to your property, the cost for this service is £55.13 per request. 

To ensure that the process progresses as efficiently as possible, you will need to provide the following information:

  • Completed, signed and dated application form
  • Location plan
  • Correct Fee
  • Required ownership consent if you are not the owner. 

Download the editable PDF application form and submit the form to:

If you are currently waiting for a planning application to be determined for the property/site, please contact for advice prior to submitting the application form.

Application form to rename, add a name to an existing property - Please see application form for details on how to pay.

Privacy Notice

Caerphilly County Borough Council will process your application for renaming / adding a name to your property and provide you with a decision and any other associated documentation. Your name and contact details will be recorded to inform you of the decision on your application and for financial purposes but will not be shared with others during the consultation process. The lawful basis for processing your information is public tasks and we will retain your details for 7 years.

We will consult with Royal Mail to ensure there are no similar house names being used in the vicinity. When a decision is made on your application, the confirmed address details will be shared with relevant Internal Departments of the Council.

You have a number of rights in relation to the information including the right of access to information we hold about you and the right of complaint if you are unhappy with the way your information is being processed.

For further information on how we process your information and your rights please click Privacy Notice  

For further information about street naming and numbering please email

Contact us