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Cardiff Council

Object to a planning application

​​​​Any member of the public can object to any planning application by making a comment on the application. 

Please note your correspondence will be open to public inspection.

On line comments are shown under the ‘Comments’ tab, while scanned and emailed comments are shown under the ‘Documents’ tab of View and track planning applications.

It does not matter how you heard about the planning application and you don’t need to have received a letter from us to make a comment. 


For applications not dealt with under delegated powers, Planning Committee will debate the application – please see Guidance on Rights to Speak at Committee




It is free to object to a planning application.


How to object


1. Check the planning application and make a note of the reference number, you can do this online or by post:


Online: You can view current planning applications online​​​​​​​​​​​External link opens in a new windowto get a reference number.


The ‘simple search’ box allows you to put in a full or partial post code, the single line of an address, such as a street name, a keyword or by putting in the reference number. The reference number is ten digits and will always follow the format of 12/12345/ABC. It will be clearly displayed on all public notices and paperwork relating to the application.


When you access the application online it will bring up all related documents, outlines, pictures and plans.


By post: If you are an immediate adjoining neighbour to the proposed development you may be sent a letter letting you know about the planning application.  This is at the discretion of the department and dependant on the scheme. The reference number of the application will be on the letter, along with further details about how to object. If you have not received a letter, or if you have lost it, you can still find the reference number for the planning application by searching online​​​​​​​​​​​External link opens in a new windowor by emailing​. 


2. Make sure you know the closing date for objections


The amount of time you have to make an objection can depend on a number of different things, such as the type of planning application, the size of the building or demolition work and when the Planning Committee meets to decide the application.


Generally, objections (comments) should be submitted during the 21-day consultation period from when the planning application was first made. 


The deadline for a specific application (known as the Standard Consultation Expiry Date) can either be found by clicking the ‘Important Dates’ button  under the first ‘Details’ tab, if you have found the application online​​​​​​​​​​​External link opens in a new windowor will be specified in any letters or documents you read or are posted out to you.


The Planning Committee is made up of Councillors and they decide on certain planning applications in Cardiff. The remainder are dealt with under delegated powers. You can find out when, or if, a planning application will be discussed at a planning meeting by using the online system under the ‘further information’ tab under the ‘Details’ tab. It will be listed as the ‘Expected Decision Level’. You can submit an objection at any time before the start of the meeting using the online system or by letter but should ideally be received during the 21-day consultation period. 


If you are unsure about a deadline, contact us at the earliest opportunity quoting the planning application reference number.


3. Make your objection (make a comment). You can do this online or by post:


Online: You will need to create an account on the online planning system to make an objection.


By post: You can write to:​

Room 250
County Hall
Atlantic Wharf
CF10 4UW

Be sure to quote the reference number.​

If you have registered online you can track an application and any changes in status will be immediately sent to your email address. 

View and track a planning application 


All planning applications will be allocated a deadline for appeals – a Standard Consultation Expiry Date - to give you time to register your objection.


If you made the original planning application and it was rejected, you can read our guidelines for making an appeal.


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