Street naming and numbering

The Street Naming and Numbering service is required if:

• You have built a new property
• You have converted a property like a barn into a dwelling, or a single property into flats.
• You wish to rename your property
• You wish to add a name to an existing numbered property
• You have built a new development of more than one dwelling. This may include naming any roads within the development
• You wish to amend layout of new developments that have already gone through the naming & numbering process.
• Residents wish to rename an existing street
• You require confirmation of an address

It is strongly advised that any Street Naming and Numbering applications made for new properties are submitted as early as possible in the development process. This will prevent any delay in obtaining services for the properties.

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

1. Completed, signed and dated application form
2. Location plan
3. Correct fee as stated in the scale of charges, no details will be confirmed until the fee has been received

Download an editable application form below and submit your completed application to: snn@carmarthenshire.gov.uk

Payment Information

To process your application, payment must be submitted along with your application. Applications without payment will not be validated, and processing will not begin.

When making a payment, please include:

Payment purpose - Confirm it is for a Street Naming and Numbering application.
Application details - Provide the reference number or, if you don’t have one yet, your name and application location.
Correct fee - Ensure you pay the amount listed in the scale of charges.

How to Pay

BACS Payment - To set up a BACS payment, email snn@carmarthenshire.gov.uk for further details.
By Telephone - We accept card payments. To speak with a member of our cashier’s team, call 01267 228686 during office hours (Monday - Friday, 9 AM - 5 PM).
In Person - You can pay by cash, credit/debit card, or cheque at your nearest Customer Service Hwb in  Ammanford, Carmarthen, or Llanelli.

When a new development has been approved, addresses are created by the Council as ‘provisional’ entities. The details of the proposed development are shared with Royal Mail who subsequently ‘hold and record’ the addresses on their ‘Not Yet Built’ address database. To avoid any issues of post being sent to non-existent properties the addresses are not activated until occupation or the properties are near completion and therefore are able to receive postal services.

As each property nears completion the developer will be required to notify the Street Naming and Numbering team and request that the address be activated for use. Upon notification confirmation will be issued to all internal services and external partners, including the emergency services.

Royal Mail will be notified to ensure that the appropriate records are moved from their ‘Not Yet Built’ database into the Postcode Address File (PAF) making it available for general use and referencing across the United Kingdom within 24-48 hours, although this addition/correction can take several months to filter through to end users of Postcode Address File data.

This will happen as external companies update their own databases with the latest Address Management Products over which Royal Mail have no jurisdiction.

• British Gas
• BT    
• Community/Town Council    
• Council Tax    
• Dyfed Powys Police Headquarters    
• Electoral Registration   
• Land Registry    
• Mid and West Wales Fire Authority   
• Ordnance Survey   
• Royal Mail    
• Welsh Ambulance Service
• NHS Trust (Central and West Region)    
• Welsh Water    
• Western Power Distribution