Architect, client and project-team guide

Fire risk assessment for a Building Regulations application

A fire risk assessment can provide important evidence about an occupied building, but it does not replace Part B design work, a fire strategy or building-control approval. The right documents depend on the project, premises and stage of work.

Reviewed: 14 August 2026Guidance: EnglandReading time: approximately 8 minutes

Direct answer

Do you need an FRA for a Building Regulations application?

There is no universal rule that every Building Regulations application must include a new fire risk assessment. Building Regulations establish requirements for building work, while the Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to assess and manage fire risk in premises within its scope.

For an existing occupied building, the current FRA is often important project evidence. It can reveal the evacuation strategy, management arrangements, known defects, people at risk and existing precautions that the proposed design must not undermine. A client, architect, building-control body or fire-safety adviser may therefore request an updated FRA, but the report should not be presented as proof that the design complies with Part B.

Choose the right evidence

FRA, fire strategy and Building Regulations evidence are different

Before appointing an assessor, define the decision that the document must support. An old FRA might need review because the existing building description is no longer accurate. A designer might instead need competent fire-engineering or fire-strategy input. Building control may require plans, specifications, calculations or other evidence addressing the proposed work.

A professional should state the purpose, scope, assumptions and limitations of their work. Asking for “a fire report” without identifying the decision can produce the wrong document and delay the application.

Document or processPrimary purposeWhat it does not prove by itself
Existing or updated FRAEvaluates fire risk, precautions, people and management in premises to which the Fire Safety Order applies.That proposed building work complies with every applicable Building Regulation.
Project fire strategy or design assessmentExplains the fire-safety design approach and how proposed measures work together.That the occupied premises are being managed safely day to day.
Building-control application and approvalAllows the building-control process to assess proposed work against applicable requirements.Continuing compliance with the Fire Safety Order after occupation.
Regulation 38 fire-safety informationSupports safe operation and maintenance by passing relevant design, construction and system information to the dutyholder.That every operational risk and management arrangement has been assessed.

Project sequence

Use the FRA at the right stages of the project

The assessment should not be left until the completion certificate is needed. Existing findings can influence the brief, while changes during work can affect escape, compartmentation, alarms, occupancy and emergency arrangements. The occupied premises and any phased handovers must remain safely managed throughout.

At completion, the responsible person needs reliable information about what was designed, installed, commissioned and changed. They should then ensure the operational FRA and fire-safety arrangements reflect the completed premises before relying on them.

01

Before design

Review the current FRA, fire strategy, plans, defects, occupancy and intended evacuation arrangements.

02

During design

Resolve interfaces between the proposed work, existing precautions and how the building will be operated.

03

During construction

Assess temporary and changing risks, occupied areas, impairments, escape and contractor controls.

04

Before occupation

Collect commissioning, as-built and fire-safety information and revise the operational FRA where necessary.

Significant change

When building work should trigger an FRA review

Article 9 requires the FRA to be reviewed regularly and when there is reason to suspect it is no longer valid or there has been a significant change. The trigger depends on effect, not simply the project label or value.

A modest refurbishment can still be significant if it alters escape, occupancy or fire separation. Conversely, work with no material effect on the assessed matters may justify a recorded check rather than an entirely new assessment. The responsible person should be able to explain the decision.

  • Change of use, occupancy, operating hours or people needing assistance
  • New rooms, partitions, doors, stairs, mezzanines or altered travel distances
  • Penetrations through compartment walls, floors, ceilings or service risers
  • Changes to alarms, emergency lighting, smoke control, sprinklers or access control
  • Extension, conversion, phased handover or partial occupation during work
  • New evidence showing that an existing assumption or fire precaution is unreliable

Information and handover

Connect project records to ongoing fire-safety management

Regulation 38 applies to specified building work involving the erection or extension of a relevant building, or a relevant change of use, where Part B imposes a requirement. The person carrying out the work must provide fire-safety information to the relevant dutyholder by completion or first occupation, whichever is earlier.

The statutory trigger should be checked for the actual project. Even where a particular alteration falls outside Regulation 38, accurate handover records can still be essential for the responsible person to understand changed fire precautions, maintain systems and review the FRA.

  • Approved and as-built plans, specifications and the fire strategy where applicable
  • Fire-resisting construction, compartmentation and fire-stopping evidence
  • Fire-door, alarm, lighting, smoke-control, sprinkler and other system information
  • Commissioning certificates, cause-and-effect information and maintenance requirements
  • Design assumptions, deviations, limitations and unresolved actions
  • A revised FRA, emergency plan and fire-safety arrangements for the occupied premises

Scoping professional help

What to tell an assessor or fire-safety professional

Describe the current and proposed use, project stage, application route and deadline. Explain who needs to rely on the work and whether you need an operational FRA, review of an existing assessment, design fire-safety input, a fire strategy or another specialist service.

The initial enquiry does not need every drawing. It should contain enough information to identify the appropriate discipline and avoid commissioning an FRA when the real need is design or engineering advice.

  • Premises address, use, size, storeys and whether it remains occupied
  • Description of the work, affected areas and current project stage
  • Existing FRA date, fire strategy and known actions or defects
  • Building-control application type and any specific request already received
  • Planned occupation, completion or submission deadline
  • Any residential, sleeping, vulnerable-person, mixed-use or higher-risk-building context

Related guidance and support

Continue with premises and local guidance

Choose the closest property guide, then use the relevant London or Surrey route when you are ready to compare local assessment support.

01Property guides02London FRA guide03Surrey FRA guide04Assessment quote

Frequently asked questions

Fire risk assessment for a Building Regulations application FAQs

Is a fire risk assessment required for every Building Regulations application?

No universal rule requires a new FRA with every application. The application concerns building work and applicable Building Regulations; the FRA concerns operational fire risk under the Fire Safety Order. An existing or reviewed FRA may nevertheless be necessary evidence for the client and design team.

Can an FRA be used instead of a fire strategy?

Not automatically. They have different purposes. An FRA evaluates the actual premises, people, precautions and management; a fire strategy explains the design approach and how fire-safety measures work together.

Does building-control approval mean the fire risk assessment is satisfactory?

No. Approval of building work does not remove the responsible person’s separate duty to ensure a suitable and sufficient FRA, implement precautions and keep the assessment current.

Should the FRA be updated before or after refurbishment?

The existing FRA should inform planning where relevant. Risks must be managed during the work, and the assessment should be reviewed and revised when changes or new evidence affect its validity. Do not wait until after occupation if a change has already created risk.

What is Regulation 38 information?

It is fire-safety information about the design and construction and the services, fittings and equipment that helps the relevant dutyholder operate and maintain the building safely. The statutory trigger must be checked against the actual building work.

Who should carry out the work?

Use competence matched to the required output. A competent FRA assessor may not be competent to design a fire strategy or provide specialist fire-engineering advice, and the reverse should not be assumed.

London and Surrey support

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Sources and limitations

Guidance reviewed 14 August 2026

This page provides general information for England. It is not legal advice or a building-specific assessment. Fire Safety Services is independent and is not affiliated with the Government, enforcing authorities, BAFE, NFRAR or IFSM.