Safety Case Review: The Six Triggers That Force a Revision, and Who Spots Each One

TL;DR: A safety case review is due whenever something changes the risks you assessed, so a signed safety case report starts ageing the day it is finished. Six triggers force the question: building works, mandatory occurrences, fire risk assessment (FRA) and external wall (FRAEW) findings, changes in residents or use, a change of Accountable Person or Principal Accountable Person, and Building Safety Regulator requests or outcomes. A different person usually spots each one, so keeping the case current is recurring work shared by the consultant, the managing agent and the Principal Accountable Person.

See the full Safety Case Report guide →

This post starts after sign-off. For what goes into the report, use the guide above; for the four phases before it, read What a Real Safety Case Actually Takes.

#Before You Start: What the Law Says About Revision

The Building Safety Act 2022 splits revision across three sections, and none of them sets a fixed review interval.

Section 83(2) says further risk assessments must be made:

(a) at regular intervals, (b) at any time that the accountable person has reason to suspect that the current assessment is no longer valid, and (c) at the direction of the regulator, within a period specified in the direction.

Building Safety Act 2022, s.83(2)

Under section 85(2), the Principal Accountable Person (PAP) must revise the safety case report if they consider it necessary or appropriate following a further section 83 assessment or further section 84 steps. Section 86(1) adds that the PAP must notify the Building Safety Regulator (BSR) as soon as reasonably practicable after preparing or revising the report.

Regulation 5(3) of the Higher-Risk Buildings (Management of Safety Risks etc) (England) Regulations 2023 (SI 2023/907) says that notification must give an overview of the main revisions and explain why the revision was made.

Three consequences follow:

• "Regular intervals" is your decision. The Act gives no number. Choose one (for example, a quarterly trigger review and an annual full reassessment), write the choice and the reason into the safety case, and keep to it.
• The judgement call is written into the law. Section 85(2) turns on whether the PAP considers revision necessary or appropriate. A record of each trigger, and why it did or did not lead to a revision, is your evidence that the judgement was made.
• Every revision goes to the BSR. The BSR's guidance says it will ask for the date, a description and the reason, may ask for the updated report, and may charge if it reviews it.

#Step-by-Step: The Six Triggers and Who Notices Each One

The column that matters is the middle one. The person with the duty is rarely the person who notices.

#Step 1: Route every building work order through a risk question

Works change the controls your safety case relies on. A lift refurbishment can take a firefighting lift out of service; a riser replacement can open compartment walls. The managing agent raises the order and the contractor sees the site, so the PAP and the consultant hear about it only if someone routes it to them. The report already has to describe how you manage works, including contractor competence and risk while work is in progress (SI 2023/907 reg 5(1)(e)(ii)). Significant material alterations, such as external wall work or changes to escape routes or the number of flats, also require the PAP to review the residents' engagement strategy within a reasonable period after completion (reg 10(1)(c)).

What done looks like: every works order above a threshold you set carries one question: does this change a control in the safety case? A yes goes to the consultant before work starts and again at completion.

#Step 2: Feed every mandatory occurrence into the risk assessment

A safety occurrence under section 87 means a control failed or a hazard appeared. The notice and the 10-day report to the BSR (SI 2023/907 reg 6(3)) are covered in the mandatory occurrence reporting guide.

The safety case question comes after the report is sent. An occurrence is close to the definition of "reason to suspect that the current assessment is no longer valid" under section 83(2)(b). The PAP must also review the residents' engagement strategy within a reasonable period after an occurrence report goes to the BSR (reg 10(1)(b)).

A caretaker or contractor usually sees it first. The reporting system must be accessible to all residents (reg 6(4)).

What done looks like: each occurrence record closes with a consultant's note stating whether the risk assessment changed, and if it did, which scenario.

#Step 3: Read every new FRA and FRAEW against the safety case

The fire risk assessment sits under a different regime. Article 9(3) of the Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to review it regularly, particularly where there is reason to suspect it is no longer valid or there has been a significant change. The fire risk appraisal of external walls (FRAEW) is usually carried out to PAS 9980, the BSI code of practice for appraising the risk of fire spread over the external walls of existing blocks of flats.

Both can change the facts the safety case report rests on. An FRA that changes the evacuation strategy, or an FRAEW that recommends interim measures, feeds the further assessment section 85(2)(a) describes. The assessor sees the finding first; the PAP sees it when someone opens the PDF.

What done looks like: the consultant reads each new FRA and FRAEW within an agreed period and lists the scenarios and controls it touches, and the actions are tracked to closure with evidence.

#Step 4: Track changes in who lives in the building and how it is used

The safety case assesses risk to the people who live there. Two duties make changes in residents concrete:

• Evacuation needs. Since 6 April 2026, the Fire Safety (Residential Evacuation Plans) (England) Regulations 2025 require person-centred fire risk assessments for residents who need help to evacuate, reviewed at least every 12 months. A new resident who needs help alters the emergency arrangements the report describes (SI 2023/907 reg 5(1)(f)). See the PEEPs guide.
• New residents. An accountable person must give prescribed building safety information to a new resident as soon as reasonably practicable after learning they have moved in (SI 2023/907 reg 8(7)(b)).

Changes of use are rarer and bigger, such as a commercial ground floor converted to flats; a change in the number of residential units is a listed significant material alteration (reg 10(2)(c)). The managing agent sees tenancy changes and sublets first. Residents see their own needs first, if the engagement strategy gives them a way to say so.

What done looks like: a quarterly note from the agent to the consultant listing residents newly flagged for evacuation support and any change of use or unit count.

Download the safety case report template, with a section for review triggers →

#Step 5: Treat an AP or PAP change as a restart for the incoming duty holder

A change of accountable person is easy for the consultant to miss, because it happens in a conveyancing file. A freehold sale or a lease variation that moves a repairing obligation can change who the accountable persons are (section 72) and which of them is the PAP (section 73). The PAP explainer sets out the test.

The Act treats the change as a new start. Under section 83(4)(b), a new accountable person must assess risks as soon as reasonably practicable after becoming one; under section 85(4)(b), a new PAP must prepare a safety case report. Under section 90, the outgoing accountable person must hand over prescribed information and notify the regulator; failing to without reasonable excuse is an offence. The PAP must also give the BSR any change to registration information within 14 relevant days of becoming aware of it (SI 2023/315 reg 4).

What done looks like: the handover pack includes the current safety case report, its revision log and the open-trigger list, and the incoming PAP's first review is booked before completion.

#Step 6: Answer BSR requests and outcomes as revisions in their own right

The BSR can direct a further assessment (s.83(2)(c)) and ask for a copy of the report (s.86(2)). When it assesses a building for a Building Assessment Certificate, it must refuse if not satisfied the relevant duties are met, or can set a period to remedy a contravention (section 81). It can also issue a compliance notice under section 99.

Each outcome describes a gap, and closing it usually means further section 84 steps, which brings section 85(2)(b) into play. A certificate application must also list any compliance notice in force (SI 2023/907 reg 3(5)). See the first wave of BSR assessment outcomes.

The PAP receives these first. The consultant needs them the same day.

What done looks like: every BSR letter is logged with an owner, a date and the revision it produced, or the reason none was needed.

#A Worked Example: One Quarter in a 64-Flat Block

Take a hypothetical 12-storey block with 64 flats, a resident-owned freehold company as PAP, a managing agent and a consultant who wrote the report in spring.

In one quarter, the agent signs a lift refurbishment that takes the firefighting lift out for six weeks. A caretaker logs a corridor fire door that will not self-close on the 7th floor, and the accountable person, advised by the consultant, treats it as a safety occurrence. The FRAEW arrives with an interim recommendation on one elevation. Two new residents tell the agent they need help to evacuate.

Four triggers, and the PAP saw none of them first. The agent saw two, the caretaker one, the fire engineer one. Unrouted, the report on file still describes a working firefighting lift and the old evacuation picture. Routed, the consultant revises two scenarios, the PAP notifies the BSR under reg 5(3), and the residents' engagement strategy goes on the review list because an occurrence report was submitted.

#Why Safety Case Review Suits a Retainer

A safety case report is commissioned once. Safety case review never stops while the building is occupied, because section 83(2) and section 85(2) keep running.

A one-off fee prices the writing. The recurring work is reading each trigger, deciding whether the assessment still holds, and drafting the section 86 notification when it does not. That suits a retainer, sometimes called a fractional safety manager: a consultant on a fixed scope who reviews triggers on a set cycle and on demand.

The managing agent operates the building and holds the evidence, so the retainer works only if the agent's routine feeds the consultant. When the software is free and the advice is the product covers one commercial shape, and the records question to settle before you sign.

If you are scoping a retainer, put these in writing:

1. Triggers. The six above, plus any specific to the building.
2. Response times. Shorter for occurrences and BSR letters.
3. Cadence. The interval for section 83(2)(a), and who books it.
4. Threshold. Who decides a revision is necessary or appropriate, and how a no is recorded.
5. Notification. Who drafts the section 86 notice and reg 5(3) overview, and who submits it.
6. Handover. What comes back if the retainer or the PAP changes.

#Common Mistakes to Avoid

1. Treating the report date as the case date. The BSR assesses whether the duties are being complied with at the time it assesses (section 81(2)). A report dated last spring describes last spring.
2. Recording revisions but not non-revisions. When a trigger does not lead to a revision, write down why, or there is no evidence the section 85(2) question was asked.
3. Discovering the PAP changed at the next BSR letter. Put the safety case on the conveyancing checklist for any freehold or lease change.
4. Overwriting the old version. Keep each revision with its date and reason. The information-keeping standards require changes to be recorded with who made them and when (SI 2023/907 reg 7(1)(f)); evidence quality depends on that history.

#Where Brocade Fits

Brocade holds the evidence the review runs on. Mandatory occurrences are logged with the 10-day BSR deadline tracked. FRA actions carry their evidence, dates and owner to verified completion. Documents are versioned with an audit trail, so a superseded FRA stays accessible, and the safety case report can be generated as a PDF from live data with a gap analysis. Deciding whether an assessment is still valid stays with your consultant.

#Checklist

• Section 83(2)(a) interval chosen, recorded and booked
• Works orders above your threshold carry the safety case question
• Occurrence records close with a consultant note
• New FRAs and FRAEWs read against the safety case
• Quarterly resident and use note from agent to consultant
• Safety case on the conveyancing checklist
• BSR letters logged with an owner and outcome
• Revision log: date, change, reason, BSR notification date

#Questions

How often does a building safety case need to be reviewed? No fixed interval. Section 83(2) requires further assessments at regular intervals, when the accountable person suspects the current one is no longer valid, and when the BSR directs it. You choose the cycle and record it.

When must the safety case report be revised? When the Principal Accountable Person considers it necessary or appropriate after a further section 83 assessment or further section 84 steps (section 85(2)). They must then notify the BSR as soon as reasonably practicable (section 86(1)).

What must a notification of a revised safety case report include? Regulation 5(3) of the Higher-Risk Buildings (Management of Safety Risks etc) (England) Regulations 2023 requires an overview of the main revisions and an explanation of why the revision was made.

Does a change of Principal Accountable Person restart the safety case? It restarts the incoming person's duties: a new assessment (section 83(4)(b)), a new report (section 85(4)(b)), and a handover of prescribed information from the outgoing accountable person (section 90).

Who should own safety case review in a block with a managing agent? The Principal Accountable Person holds the duty and decides on revisions. The managing agent sees triggers first and the consultant judges whether the assessment still holds, so each trigger needs a written route between the three.

Is a one-off safety case report enough? No. The report describes the building at a date, and the duties to reassess and revise run for as long as it is occupied, so recurring support fits the work better than a single commission.

#Further Reading

• Safety Case Report guide
• How to Write a Building Safety Case for a Resident-Run Company
• Why Your Safety Case Evidence Quality Now Decides BSR Outcomes

This article is for informational purposes. For building-specific advice, consult a qualified fire safety professional.

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