Guide
Fire Risk Assessment for Mixed-Use Buildings
By Fire Risk Experts editorial team. Reviewed by Fire safety editorial reviewer. Last reviewed: 26 July 2026. Last updated: 26 July 2026. Next review: 26 January 2027.
Practical fire risk assessment guidance for buildings that combine commercial premises with flats or other residential accommodation.
Direct answer
A mixed-use building fire risk assessment should look at how the commercial and residential parts interact, who controls each area, how shared escape routes and services are managed, and whether current arrangements still protect relevant persons.
Key takeaways
- Mixed-use buildings often involve more than one responsible person.
- Common parts, shared services and escape routes need clear co-ordination.
- Changes in use, layout or occupancy can trigger reassessment or review.
Fire Risk Assessments pillar
This guide is part of the Fire Risk Assessments pillar. Use it alongside related guidance and property-specific pages when preparing an enquiry.
Why mixed-use buildings need extra care
A building with shops, offices, hospitality or other commercial uses below flats or other residential accommodation can create overlapping fire-safety duties. The Home Office duties guide explains that relevant persons can include people in the immediate vicinity of your premises, such as people in a flat above a shop or neighbouring occupiers in a multi-occupied building.
- Commercial activity can affect people living above or beside it.
- Shared stairs, corridors, risers and plant areas create interface risks.
- Out-of-hours occupation can differ between commercial and residential parts.
Work out who controls what
GOV.UK says there can be more than one responsible person in shared premises, and those duty holders need to co-ordinate their fire safety plans. In mixed-use buildings that can mean the landlord, freeholder, managing agent, commercial occupier or employer each control different parts of the building or different fire-safety measures.
- Map responsibility for common parts, plant rooms and service risers.
- Check who maintains alarms, emergency lighting, fire doors and signage.
- Do not assume the lease wording removes statutory duties automatically.
Focus on common parts and shared systems
For many mixed-use buildings, the most important questions sit at the interfaces: the common stairs and corridors, final exits, service cupboards, refuse arrangements, compartmentation, flat entrance doors where relevant, and how warning and evacuation work across the building. Section 156 guidance also emphasises co-operation, information sharing and keeping fire safety information current.
- Make sure shared escape routes are suitable and kept clear.
- Check whether the evacuation approach is understood by all occupiers.
- Review whether any refurbishment, fit-out or change of use altered the risk profile.
What to prepare before requesting a quote
Mixed-use enquiries are easier to triage when the responsible person can explain the building layout, uses, occupancy pattern and management setup. You do not need to diagnose the technical solution yourself, but clear factual information helps the assessor review scope and suitability.
- Property address, use of each part and whether anyone sleeps in the building.
- Any existing fire risk assessment, action plan or fire strategy information.
- Known refurbishment, subdivision, fit-out or tenant changes.
- Maintenance records for alarms, emergency lighting, extinguishers and fire doors where held.
What to prepare
- Property address, postcode, use and occupancy details.
- Existing fire risk assessment and action plan, if available.
- Fire alarm, emergency lighting, extinguisher and fire-door records where held.
- Information about sleeping accommodation, vulnerable occupants or unusual risks.
Sources
- Fire safety in the workplace: who's responsible, GOV.UK. Accessed 2026-07-26. Shared-premises guidance covering more than one responsible person and common areas in multi-occupied residential buildings.
- A guide for persons with duties under fire safety legislation, Home Office. Accessed 2026-07-26. Article 50 guidance explaining scope, suitable and sufficient assessments, shared duties and relevant persons in multi-occupied premises.
- Check your fire safety responsibilities under Section 156 of the Building Safety Act 2022, Home Office. Accessed 2026-07-26. Guidance on additional co-operation, information and record duties under the amended Fire Safety Order.
- The Regulatory Reform (Fire Safety) Order 2005, legislation.gov.uk. Accessed 2026-07-19. Primary legislation for general fire safety duties in England and Wales.
Frequently asked questions
Who is the responsible person?
It is commonly an employer, owner, landlord, occupier, managing agent or another person with control.
Do I need technical details before requesting a quote?
No. Start with property type, address, use, occupancy, floors, sleeping accommodation and timescale.
Need a quote?
Send the practical details and we will review the enquiry for suitable provider matching.
Related content
guide
Fire Risk Assessment for Commercial Properties
Guidance for offices, shops, hospitality, warehouses and mixed commercial premises.
guide
Fire Risk Assessment for Landlords and Managing Agents
Guidance for landlords, managing agents and residential building managers who control premises, common parts or fire-safety arrangements.
guide
Responsible Person Fire Safety Duties
How responsible person duties can apply to employers, landlords, occupiers, managing agents and shared buildings.
property
Block of Flats Fire Risk Assessments
For communal areas in purpose-built and converted residential blocks.
service
Fire Risk Assessments
Arrange a fire risk assessment enquiry for review and provider matching.
service
Find an Assessor
Submit practical premises details and consent for provider matching.
Next step
Need help arranging an assessment?
Book online when the scope, price and fulfilment route are clear, or request a tailored quote where professional scoping is needed.
An assessor is not treated as appointed until they accept the assignment.