The Building Safety Act requires Accountable Persons to report safety occurrences to the BSR within strict timescales. Failure to report is a criminal offence.. What Is Mandatory Occurrence Reporting? Section 85 of the Building Safety Act 2022 requires the Principal Accountable Person to report certain safety occurrences to the Building Safety Regulator (BSR). What Must Be Reported A safety occurrence is any event relating to the building that: Causes a significant risk to life safety Has caused or is likely to cause structural failure Has caused or is likely to cause the spread of fire Examples include: Fire in any part of the building Failure of a fire safety system (detection, alarm, suppression, smoke control) Structural movement, cracking, or settlement Discovery of combustible cladding or insulation not previously identified Failure of fire doors or fire stopping Flooding that affects fire safety systems Gas leak or explosion Reporting Timescales Type Timescale Safety occurrence (actual) Within 10 calendar days Risk of safety occurrence As soon as practicable Annual summary Annually to BSR How to Report Reports are submitted through the BSR's online portal and must include: Date and time of occurrence Location within building Description of what happened Immediate actions taken Any injuries or fatalities Relevant building safety information Consequences of Not Reporting Failure to report a mandatory occurrence is a criminal offence under the BSA 2022: Unlimited fine on summary conviction Up to 2 years imprisonment on indictment BSR enforcement action including compliance notices Building a Reporting Culture Train all staff on what constitutes a reportable occurrence Establish internal reporting procedures that feed into BSR submissions Maintain logs of near misses as well as actual occurrences Review and learn from all reported occurrences Include occurrence reporting in Safety Case Reports For MOR compliance guidance, contact us. Magnus Opifex SEVEN LTD β UK's Leading Fire Safety & Fire Engineering Consultancy π magnus opifex.co.uk π +44 7486 691724 βοΈ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby β CEO, Lawyer and Barrister, Legal & Administrative Director Alina β Technical Director & Expert Fire Engineer (BEng) Head Office: Ealing Cross, 85 Uxbridge Road, London W5 5BW Magnus Opifex SEVEN LTD delivers engineering led fire engineering, fire risk assessments, CFD modelling, and building safety consultancy across the United Kingdom and internationally. With over 20 years of combined experience and a UK portfolio spanning healthcare, residential and infrastructure, we bring truly engineered solutions with a personal touch. Β© 2026 Magnus Opifex SEVEN LTD. All rights reserved.