What Makes HMOs Different?
A House in Multiple Occupation (HMO) is defined in the Housing Act 2004 as a property occupied by three or more people forming two or more separate households who share facilities such as a bathroom or kitchen. HMOs are subject to a more prescriptive fire safety regulatory regime than standard residential lettings — a reflection of the higher risk that shared housing presents, due to unfamiliarity between occupants, shared escape routes, and the practical difficulty of coordinating safe evacuation.
For fire doors specifically, HMO obligations exceed the general residential requirements in two key respects: the scope of where fire doors are required is typically broader, and the specific requirements set by HMO licensing conditions can go further than the statutory minimum.
The Legal Framework for HMO Fire Doors
HMO fire safety obligations arise from three sources:
1. The Regulatory Reform (Fire Safety) Order 2005
The RRO applies to the common parts of an HMO in the same way it applies to the common parts of a block of flats. The Responsible Person — typically the landlord — must carry out a fire risk assessment and maintain fire safety equipment, including fire doors, in working order.
2. HMO Licensing Conditions
Mandatory HMO licensing applies to all HMOs occupied by five or more people forming two or more households. Additional licensing schemes — which many local authorities have adopted — can extend licensing requirements to smaller HMOs. Licensing conditions are set by the local authority and vary, but most specify:
- That fire doors of a specified rating (typically FD30S — 30-minute fire and smoke resistance) must be fitted to all habitable rooms (bedrooms, sitting rooms), kitchens, and plant rooms
- That all fire doors must be fitted with self-closing devices
- That fire doors must be inspected at specified intervals and maintained in working order
3. The Fire Safety (England) Regulations 2022
Where an HMO has common parts that residents share (a communal stairwell, shared lobby), the 2022 Regulations apply in the same way as for a block of flats — requiring quarterly checks of communal fire doors and, for HMOs in buildings over 11 metres, annual checks of flat entrance doors.
Where Must Fire Doors Be Fitted in an HMO?
The specific requirements depend on the HMO's licence conditions and the outcome of the fire risk assessment. However, most HMO licensing frameworks and best practice guidance require FD30S fire doors in the following locations:
- All habitable rooms (bedrooms, sitting rooms) — the door between each letting room and the common escape route
- Kitchen doors — kitchens are high-risk ignition sources, and a self-closing FD30S kitchen door is almost universally required
- Utility rooms and cupboards containing electrical distribution equipment, boilers, or other potential ignition sources
- Any door on the escape route through which occupants would pass to reach the final exit
In practice, this means that in a typical three-storey HMO, virtually every internal door between habitable or storage spaces and the shared escape route should be a fire door. If you are uncertain about which doors require upgrading, the fire risk assessment for the property is the definitive reference.
FD30S vs FD30: In HMOs, FD30S (30-minute fire resistance with smoke control) is typically required rather than FD30 (fire resistance only). The "S" designation indicates that the door also limits the spread of cold smoke — important in shared housing where smoke from a kitchen fire may spread through the building before the fire itself takes hold.
Self-Closing Devices in HMOs
Every fire door in an HMO must be fitted with a functioning self-closing device — a door closer that reliably brings the door to a fully latched position from any open position. This is a non-negotiable requirement. In HMOs, where occupants may not be aware of one another's movements and where there is no guarantee that a bedroom door will be closed at night, the self-closer is the last line of defence against fire spreading from one room to the escape route.
Hold-open devices — which keep a fire door open for convenience and release it on a fire alarm signal — can be used in HMO common areas with the appropriate fire alarm integration. They should not be used in letting rooms without careful consideration of whether the alarm system provides adequate detection.
How Often Must HMO Fire Doors Be Inspected?
HMO licence conditions typically specify inspection frequencies. Where they do not, the following approach is consistent with legal requirements and best practice:
- Quarterly: A basic check of all fire doors by the landlord or a competent person — verifying that doors are closing, latching, undamaged, and not propped open. This is the minimum frequency for communal fire doors under the 2022 Regulations
- Annually: A full FDIS-certified fire door inspection of all fire doors in the property, including letting room doors, producing a formal door-by-door report with photographic evidence
- On change of tenancy: An inspection of the fire doors in the vacated room before re-letting, since tenants can and do cause damage to fire doors during their occupation
Common HMO Fire Door Failures
In HMO inspections, the most frequently identified failures are:
- Propped-open doors: Tenants propping bedroom or kitchen doors open for ventilation or convenience — directly defeating the fire protection
- Damaged self-closers: Closers in letting rooms receive heavy use and are frequently damaged or disabled
- Missing certification labels: Doors replaced by previous landlords or tenants without using certified fire doors
- Inappropriate door specifications: FD30 doors (without smoke control) installed where FD30S is required by the licence conditions
- Modified doors: Tenants adding letterbox slots, changing locks, or fitting cat flaps — all of which can compromise fire resistance
What Happens If an HMO Fails a Fire Safety Inspection?
Local authorities can enforce HMO licence conditions, and fire and rescue services can enforce the RRO, independently. Penalties for HMO fire safety failures include licence revocation (which prevents you from letting the property legally), financial penalties of up to £30,000 per breach, and criminal prosecution. Fire safety failures are also a common trigger for rent repayment orders by tenants.
Following an inspection that identifies fire door failures, remedial works should be instructed as a priority. For immediately life-safety-critical defects — a fire door without any self-closer on an escape route — action should be taken the same day.
Key Takeaways
- HMO fire door obligations exceed those for standard residential lettings — check your licence conditions carefully
- FD30S (fire and smoke rated) doors are typically required in letting rooms, kitchens, and on escape routes
- Every fire door in an HMO must have a functioning self-closing device — no exceptions
- Quarterly competent-person checks plus an annual FDIS-certified inspection is the recommended compliance model
- Inspect on change of tenancy — tenants routinely damage fire doors
- Non-compliance risks licence revocation, financial penalties, and criminal prosecution