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Street naming and numbering

We are responsible for the naming of all roads and streets, and for the naming and numbering of all properties (residential, commercial and industrial) within the City and County of Swansea.

An address can only be created and given a postcode by Royal Mail once it has been officially named and numbered by us. Therefore if you are planning a new development, constructing a new property, converting an existing property, or wish to change the name of a property you must contact us with the address creation or amendments required.

Failure to do so will mean that any address created will not be an official address and this will lead to problems. For example, the address will not be recognised by the Royal Mail, delivery companies or utility services; and difficulties may arise in relation to your registration for voting and the supply of credit cards. Moreover, ambulance, fire and police services may experience difficulty in locating the address in the event of an emergency. 

It should also be noted that we have the power to enforce changes to unofficial addresses in order to ensure compliance with standard conventions and that council policy for street naming and numbering is maintained. It is in your best interests to advise us of new naming and numbering requirements at the earliest opportunity.

Our street naming and numbering guidance and procedure document is available as a download on this page.

How do I apply? 

To apply for the creation of a new address or an amendment to an existing address, please find the appropriate form below.  

Your completed application form along with a cheque for the appropriate fee should be sent to:

Street Naming and Numbering Officer,
City and County of Swansea,
Room 1.3.7,
Civic Centre,

Please make cheques payable to 'City and County of Swansea'.  

If you require assistance please contact us on 01792 637127 or email

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