Converting commercial buildings to residential use triggers complex fire safety requirements. What you need to know.. Conversion Fire Safety Permitted development rights and planning changes have driven a wave of office to residential conversions. Fire safety is often the critical challenge. Key Issues Original fire strategy designed for commercial occupancy Sleeping risk fundamentally changes the fire safety approach Existing fire protection may not meet residential standards Means of escape designed for able bodied, awake occupants Required Upgrades Enhanced detection β Grade A LD1 to BS 5839 6 Compartmentation upgrades to 60 minute minimum Protected escape routes with emergency lighting Sprinkler installation where height or complexity demands Common Pitfalls Assuming Prior Approval or PD means no fire safety requirements Not commissioning a fire strategy before design Underestimating the cost of fire safety upgrades Ignoring external wall requirements for buildings over 11m For conversion fire safety, contact Magnus Opifex. 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.