Quick answer: Removing a chimney breast from a party wall will commonly be notifiable because it involves cutting into or altering the party structure and inserting support. The building owner should serve notice before work and provide adequate structural details.
This article concerns England and Wales. It provides general information, not legal advice. The application of the Party Wall etc. Act 1996 depends on the facts, ownership and proposed work.
Why the Act may apply
The party wall can support flues, masonry and structure serving both properties. Removing one side can change loading, fire separation, sound insulation and stability. Section 2 rights and safeguards are therefore often relevant.
Information to provide
The notice should accurately describe the removal and proposed support. Structural calculations and drawings should show beams or gallows brackets, bearings, padstones, retained masonry, fire stopping and making good where relevant.
Protecting the adjoining property
A schedule of condition can record existing cracking and finishes. An award may regulate working hours, dust and vibration precautions, temporary support, access, insurance and the repair of damage caused by the works.
Other approvals
Building regulations approval is normally important, and planning or listed-building consent may also be needed. These approvals do not replace the Party Wall process.
Frequently asked questions
Can I remove the breast without telling my neighbour?
If the work is covered by the Act, the correct notice must be served even where the work is entirely inside your property.
Are gallows brackets always acceptable?
No. Their suitability depends on the building, local building-control requirements and the remaining chimney construction.
Authoritative sources and further help
Read the official GOV.UK explanatory booklet and the Party Wall etc. Act 1996 on legislation.gov.uk. For the wider process see our building owners guide, adjoining owners guide and notice guidance.
Reviewed: 16 July 2026. Seek advice from a suitably experienced party wall surveyor or solicitor where the facts or legal position are disputed.