Porth Cynllunio

  1. Building Regulations (cy)
  2. Approved documents
  3. Approved Document B (Fire safety)

Part B (Fire safety)

This section covers the technical guidance contained in Part B (Approved Document B) of schedule 1 of the Building Regulations.

It covers the requirements with respect to Fire safety.

Follow the links from this page to access the approved document, details of any previous appeals and determinations and further information relating to this part.

Approved Document B

Download the Approved Document, or find out how to order a printed copy.

Research Reports

The Building Regulations are underpinned by research which aims to provide a sound scientific basis to the requirements and guidance relating to each of the technical parts.


Before bringing into effect changes to the technical requirements, or the supporting Approved Document(s), of the Building Regulations, Government seeks views on the proposed changes through a formal consultation process.

Regulatory Impact Assessments

Government departments assess the likely outcomes of regulating in order to try to achieve the right balance between under-regulating, which may fail to protect the public, and over-regulating, which may create excessive bureaucracy.

Part B - Determinations and appeals

The Secretary of State for Building Regulations may issue decisions on applications for determinations of compliance with the technical requirements of the Building Regulations, or appeals against a local authority's refusal to relax a requirement.

Associated documents

The following documents have been approved and issued by the First Secretary of State for the purpose of providing practical guidance with respect to the requirements of the Building Regulations 2000 (as amended).


This section provides answers to frequently asked questions (FAQs) about Part B of the Building regulations.