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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 our city and county.

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.

Guidance and procedure for street naming and numbering (PDF, 114 KB)

All forms are available in Welsh - click on 'Cymraeg' in the top right corner of your screen.

Apply to name or rename an existing property

You do not need to submit an application if you wish to add a name to an existing numbered property. However, if you do add a name to a numbered property, you must always remember to quote the property number in all correspondence.

Apply to name and number a new development

This form is to be used for the naming and numbering of a new property or development.

Apply to name and number a property conversion

This form should be used if a new address is required due to a property conversion. This includes premises that may have been split or merged and covers residential, commercial and industrial premises.

Apply to amend the naming or numbering of a revised development layout

This form should be used if a development layout is to be amended and the changes have been approved by planning. Developers of large sites are advised to stage work in phases and consider the expected flow of property numbering.

Apply to rename street at resident's request

This form can be used to request a street is renamed. At least a two thirds majority of resident and property owner consent will be required before any renaming proposals are considered.

Apply for confirmation of an address

This form can be used to verify an address.

Street naming and numbering team

Contact us if you have any queries about street naming and numbering and can't find the information online.
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Last modified on 14 February 2024