In the UK, the requirements for obtaining planning permission for removing a chimney breast can vary depending on the type of property and its location. In general, however, if you’re removing a chimney breast in a house that is not listed, you may not need planning permission, but you may need to comply with building regulations.
If you’re removing a chimney breast in a listed building, then you will likely need to apply for listed building consent. This is because listed buildings are protected due to their historical or architectural significance, and any alterations to them must be carefully considered.
In addition to listed building consent, you may also need to apply for planning permission if the removal of the chimney breast would affect the external appearance of the building, such as if it is a prominent feature. In some cases, you may also need planning permission if the chimney breast is a structural part of the building, and its removal would affect the stability of the building.
It is important to check with your local planning authority to determine if planning permission is required for the removal of a chimney breast in your particular case. They will be able to advise you on the specific requirements and whether any other approvals are necessary.