Fire door regulations: which doors have to be fire doors in an ordinary home, and in an HMO?

In England, ordinary houses, HMOs and blocks of flats are treated differently: the answer depends on the escape route the door protects, not on whether the door is internal. Fire door regulations are mostly Building Regulations guidance, HMO fire-safety duties and fire-risk-assessment duties, so the practical answer is often more specific than a simple yes or no.

Where are fire doors required in an ordinary house?

In an ordinary house in England, all internal doors do not need to be fire doors, but a door to an integral garage must be fire-resisting and self-closing, and a house with a storey more than 4.5m above ground needs a protected stairway with fire-resisting doors onto that stair. Approved Document B says: “If a garage is attached to or forms an integral part of a dwellinghouse, the garage should be separated from the rest of the dwellinghouse by fire resisting construction (minimum REI 30) (Diagram 5.1).” It also says a protected stairway is “a stair separated by fire resisting construction (minimum REI 30) at all storeys”. That means a normal ground-and-first-floor home usually does not need every bedroom door to be a fire door, but a three-storey layout, loft conversion or garage connection can change the answer. In practice FD30 doors are normally used where older guidance refers to a 20-minute door, because FD20 doors are no longer commonly certified products.

Are fire doors a legal requirement in an HMO?

Fire doors are usually required in an HMO in England where the fire risk assessment, HMO licensing standard or council fire-safety standard says they are necessary, but the national HMO regulations do not contain a blanket sentence saying every HMO bedroom door must always be a fire door. The Management of Houses in Multiple Occupation (England) Regulations require suitable precautions: “Appropriate fire precaution facilities and equipment must be provided of such type, number and location as is considered necessary.” For bedsit-type HMOs, the common standard is a 30-minute protected escape route with FD30S doors to risk rooms; LACORS guidance states that a “30-minute protected route note 9 is required, including 30-minute fire-resisting construction and FD30S doors to all risk rooms.” So a 4-bed HMO may need bedroom fire doors if its layout and use require protected escape, but the legal requirement comes through risk and licensing, not bed count alone. In Scotland, HMO licence conditions cannot be used to impose matters reserved to fire-safety legislation.

What determines whether an HMO counts as a shared house or a bedsit HMO?

An HMO counts as a shared house or a bedsit HMO by how it is occupied and let, not by the label on the licence: a shared house is normally one joint group taking the whole property, while a bedsit-type HMO has separate lettings and usually locks on individual room doors. The Housing Act 2004 HMO definition only asks whether “the living accommodation is occupied by persons who do not form a single household”; it does not create a statutory shared-house-versus-bedsit category. LACORS guidance is blunt about that point: “There is no legal definition of a ‘shared house’ and so this term can sometimes cause confusion.” It describes shared houses as HMOs “where the whole property has been rented out by an identifiable group of sharers such as students, work colleagues or friends as joint tenants,” while bedsit HMOs have individual lettings where “there will usually be a lock on each individual letting door.” That is why a fire officer may reclassify a long-licensed shared house if the actual use has drifted into room-by-room occupation.

What do you do about a bedroom you can only reach through another room?

In England, a bedroom reached only through another room is an inner room, and Building Regulations guidance allows that arrangement only in limited escape conditions, typically where the room is no more than 4.5m above ground and has a compliant emergency escape window. Approved Document B allows “any room on a storey that is a maximum of 4.5m above ground level which is provided with an emergency escape window as described in paragraph 2.10.” For an HMO second-floor bedroom reached through a lounge below, the practical decision is commercial as much as technical: if a misting system or new protected corridor costs more than the rent the room can justify, taking that room out of bedroom use is often the cleanest route. Surveying guidance reflects that relabelling can be legitimate where the room is not marketed as sleeping accommodation: “Instead of listing the room as a bedroom, you could go with ‘Studio’, ‘Office’, or ‘Den’.” Northern Ireland is stricter in guidance, expecting “a fire-resisting door of an appropriate standard” between inner and outer rooms.

Do you need a fire door between the house and an integral garage?

Yes, in England the door between a house and an integral or attached garage should be a fire-resisting doorset, and Approved Document B also expects it to be self-closing and set up so fuel spill cannot run into the house. The core rule is that “If a garage is attached to or forms an integral part of a dwellinghouse, the garage should be separated from the rest of the dwellinghouse by fire resisting construction (minimum REI 30) (Diagram 5.1).” Approved Document B then adds that “The door opening should be a minimum of 100mm above the level of the garage floor,” unless the alternative floor-fall option is used. Appendix C also identifies the garage door as one of the doorsets that should have a closer: “All fire doorsets, including to flat entrances and between a dwellinghouse and an integral garage, should be fitted with a self-closing device, except for all of the following.” In practice, an internal garage fire door with frame is normally specified as a complete compatible FD30 or FD30S doorset.

How can you tell if a door is an FD30 fire door?

You can tell a door is an FD30 fire door only by evidence for the complete doorset, not just by looking at thickness, weight or a single component; labels, plugs and certificates are useful industry evidence but are not themselves a statutory marking system. Approved Document B warns that “Any test evidence used to substantiate the fire resistance rating of a door or shutter should be carefully checked to ensure that it adequately demonstrates compliance and is applicable to the adequately complete installed assembly.” In practice, a BM TRADA Q-Mark door may have a coloured plug on the hinge edge; one fire-risk source explains that “The outer ring colour shows the fire rating — yellow for 30-minute, blue for 60-minute doors.” BWF/Certifire-scheme doors instead commonly carry a top-edge label: “The label displays the member's name and phone number, and, where applicable, the certification number, a unique serial number and the door's fire rating.” If hardware has been changed, the certificate alone may not prove the installed door still performs as FD30.

How does a fire door have to be installed?

In England, a fire door has to be installed as a tested compatible assembly following the relevant fire-door standard, because Approved Document B points installers to BS 8214 rather than spelling out every frame, gap, hinge and seal detail itself. The England guidance says: “Recommendations for the specification, design, construction, installation and maintenance of fire doorsets constructed with non-metallic door leaves are given in BS 8214.” The market tolerance most inspectors expect is tight: BS 8214:2026 guidance is commonly summarised as “a 2-4mm gap at the head and both jambs (sides).” That is why a compliant fire door is not just a slab; the lining, stops, seals, hinges, latch, closer, glazing and letterplate all matter. Wales differs awkwardly because its own Approved Document B still says: “BS 8214:1990 gives recommendations for the specification, design, construction, installation and maintenance of fire doors constructed with non-metallic door leaves.” Abodient can hold the fire-door certificate and expiry-linked compliance records against the property, which matters because evidence of the installed assembly is what an inspector or managing agent normally asks to see.

Do internal fire doors need to be self-closing?

In England, ordinary fire doors within a single house or flat do not need self-closers under Approved Document B, but flat-entrance doors and doors between a dwellinghouse and an integral garage do. The guidance first states the general rule: “All fire doorsets, including to flat entrances and between a dwellinghouse and an integral garage, should be fitted with a self-closing device, except for all of the following.” The key exception is then stated expressly: “c. Fire doorsets within flats and dwellinghouses.” That is the point trade pages often blur when they say almost every fire door needs a closer. For existing residential buildings over 11m, the Fire Safety (England) Regulations 2022 separately require checks of self-closers on flat entrance and communal fire doors: “The checks required by paragraphs (4) and (6) must include ensuring that the self-closing devices for the doors are working.” Northern Ireland differs because its Technical Booklet E has no equivalent dwelling-internal carve-out, saying a fire door “should be fitted with an automatic self-closing device” except cupboard and duct doors.

What fire door signage is required?

In England, fire doors normally need a suitable fire-safety sign such as keep shut, keep locked shut or automatic fire door keep clear, but doors to and within flats and dwellinghouses are expressly exempt. Approved Document B states: “Except for doorsets listed in paragraph C12, all fire doorsets should be marked with one of the following fire safety signs, complying with BS 5499-5, as appropriate.” The listed exemptions include “Doors to and within flats and dwellinghouses.” That means the blue fire door keep shut disc is expected on many communal, HMO and workplace-style fire doors, but not on ordinary internal doors inside a private home or on a flat entrance where the guidance exemption applies. Northern Ireland’s signage duty is close to the English version: Technical Booklet E says “All fire doors, other than those listed below, should be marked with an appropriate fire safety sign complying with BS 5499: Part 1 indicating whether the door is –”. In practice, the entrenched UK convention is the blue circular keep-shut sign, even though the exact product style is a standards issue rather than a statute.

Can a fire door have a letterbox?

Yes, a fire door can have a letterbox, but in England a new or replacement letterbox must be suitable for a fire-resisting door and fitted so it does not destroy the door’s fire performance. Government guidance says: “Where a letterbox has been fitted to a door that did not previously have one, the resident will need to confirm that the new letterbox is suitable for use in fire-resisting doors and has been fitted by a specialist contractor.” The important point is that the door is assessed as a complete doorset: cutting a hole into a previously compliant FD30 door can make it non-compliant unless the letterplate, liner and seals are compatible with the rating. Market certification normally relies on fire-resistance testing rather than a separate statute; one contractor summarises the common standard as: “For a letterbox to carry a fire rating, it must be tested to BS 476 Part 22, the British Standard for fire resistance testing of non-loadbearing elements of construction.” Scotland adds a specific practical expectation for flats: “Letter boxes would incorporate intumescent material which seals the opening when exposed to the heat from a fire.”

Is a fire door survey a legal requirement?

No UK statute uses or requires the term fire door survey: the enforceable duties are a fire risk assessment, and for residential buildings over 11m in England, annual best-endeavours checks of flat entrance fire doors. The Fire Safety Order requires the responsible person to make “a suitable and sufficient assessment of the risks to which relevant persons are exposed for the purpose of identifying the general fire precautions he needs to take.” Separately, the Fire Safety (England) Regulations 2022 say the responsible person for a building with two or more domestic premises above 11m “must use best endeavours to undertake checks of fire doors at the entrances of individual domestic premises in the building at least every 12 months.” Government guidance then makes clear these are checks, not necessarily a specialist survey: “You should not need to engage a specialist to carry these out.” A paid fire door survey may still be sensible evidence, especially after a defect notice, but it is a market service name rather than a legal category.

What do you do when a fire door survey says your flat's front door fails?

When a fire door survey says your flat entrance door fails in England, get the defect schedule, ask whether repair will restore compliance, and use a competent contractor for the specified work as soon as reasonably practicable rather than assuming you need a full new certified door. Government guidance says: “Where inspections identify the need for repair or replacement of any fire door (for example communal or flat entrance door), this work must be undertaken by a competent contractor as soon as reasonably practicable.” The cheapest carpenter may be able to fit hinges, a closer or a letterbox, but if the managing agent requires evidence that the completed doorset remains FD30, you need someone able to provide that evidence for the installed assembly, not just a receipt for parts. A failed door is often a repair issue rather than replacement; one fire-door inspection guide says: “A failed door is usually a £50 fix (self-closer, strip, gap) — not a £1,000 replacement; get the defect schedule before agreeing remedial work.” If the responsible person ignores a real failure, an enforcement notice can require remedial steps within at least 28 days.

Last reviewed August 2026.

Sources

• Approved Document B Volume 1, England, paragraph 5.6 — “If a garage is attached to or forms an integral part of a dwellinghouse, the garage should be separated from the rest of the dwellinghouse by fire resisting construction (minimum REI 30) (Diagram 5.1).” Source
• Approved Document B Volume 1, England, paragraph 2.5 — “a. Protected stairway – a stair separated by fire resisting construction (minimum REI 30) at all storeys, that complies with one of the following.” Source
• Approved Document B Volume 1, England, Appendix C5 — “All fire doorsets, including to flat entrances and between a dwellinghouse and an integral garage, should be fitted with a self-closing device, except for all of the following.” Source
• Trade Calculator, Part B fire resistance ratings — “FD 20 doorsets are no longer certified as products, so an FD 30 door is the practical way to satisfy an E 20 requirement.” Source
• Management of Houses in Multiple Occupation (England) Regulations 2006, Schedule 3 paragraph 5 — “Appropriate fire precaution facilities and equipment must be provided of such type, number and location as is considered necessary.” Source
• Fire (Scotland) Act 2005 section 71(2) — “A term, condition or restriction imposed in connection with the issue under such an enactment of the licence shall be of no effect in so far as it relates to any matter in relation to which requirements or prohibitions are or could be imposed by virtue of this Part.” Source
• LACORS/CIEH housing fire safety guidance, case study D7 — “30-minute protected route note 9 is required, including 30-minute fire-resisting construction and FD30S doors to all risk rooms.” Source
• LACORS/CIEH housing fire safety guidance, paragraph 35.1 — “There is no legal definition of a ‘shared house’ and so this term can sometimes cause confusion.” Source
• LACORS/CIEH housing fire safety guidance, paragraph 35.2 — “For the purposes of this guidance, shared houses are described as HMOs where the whole property has been rented out by an identifiable group of sharers such as students, work colleagues or friends as joint tenants.” Source
• LACORS/CIEH housing fire safety guidance, paragraph 36 — “Each letting will have its own individual tenancy agreement and there will usually be a lock on each individual letting door.” Source
• Housing Act 2004 section 254(2)(b) — “(b)the living accommodation is occupied by persons who do not form a single household (see section 258);” Source
• Approved Document B Volume 1, England, paragraph 2.10 reference — “e. Any room on a storey that is a maximum of 4.5m above ground level which is provided with an emergency escape window as described in paragraph 2.10.” Source
• GB Home Surveys, bedroom description guidance — “Instead of listing the room as a bedroom, you could go with ‘Studio’, ‘Office’, or ‘Den’.” Source
• Northern Ireland Fire & Rescue Service HMO fire safety guide — “c) a fire-resisting door of an appropriate standard is fitted between the inner and outer rooms (typically FD30S standard for non-high-risk outer rooms).” Source
• Approved Document B Volume 1, England, paragraph 5.7(b) — “b. The door opening should be a minimum of 100mm above the level of the garage floor.” Source
• Approved Document B Volume 1, England, fire-resistance evidence — “Any test evidence used to substantiate the fire resistance rating of a door or shutter should be carefully checked to ensure that it adequately demonstrates compliance and is applicable to the adequately complete installed assembly.” Source
• RiskFire, fire-door certification — “The outer ring colour shows the fire rating — yellow for 30-minute, blue for 60-minute doors (other colours cover higher ratings).” Source
• BWF Fire Door Alliance, understanding the label — “The label displays the member's name and phone number, and, where applicable, the certification number, a unique serial number and the door's fire rating.” Source
• Approved Document B Volume 1, England, BS 8214 reference — “Recommendations for the specification, design, construction, installation and maintenance of fire doorsets constructed with non-metallic door leaves are given in BS 8214.” Source
• Welsh Government Approved Document B Volume 1 — “BS 8214:1990 gives recommendations for the specification, design, construction, installation and maintenance of fire doors constructed with non-metallic door leaves.” Source
• IgnisTrack, BS 8214 gap measurements — “BS 8214:2026 recommends a 2-4mm gap at the head and both jambs (sides).” Source
• Approved Document B Volume 1, England, Appendix C exception — “c. Fire doorsets within flats and dwellinghouses.” Source
• Fire Safety (England) Regulations 2022 regulation 10 — “The checks required by paragraphs (4) and (6) must include ensuring that the self-closing devices for the doors are working.” Source
• Northern Ireland Technical Booklet E 2012 — “A fire door should have the performance appropriate to the location given in Table 4.5 and should be fitted with an automatic self-closing device (other than those fire doors to cupboards and ducts, which are to be kept locked shut when not in use).” Source
• Approved Document B Volume 1, England, Appendix C signage — “Except for doorsets listed in paragraph C12, all fire doorsets should be marked with one of the following fire safety signs, complying with BS 5499-5, as appropriate.” Source
• Approved Document B Volume 1, England, Appendix C12 — “a. Doors to and within flats and dwellinghouses.” Source
• Northern Ireland Technical Booklet E 2012, fire-door signage — “All fire doors, other than those listed below, should be marked with an appropriate fire safety sign complying with BS 5499: Part 1 indicating whether the door is –” Source
• MHCLG fire-door guidance, letterboxes — “Where a letterbox has been fitted to a door that did not previously have one, the resident will need to confirm that the new letterbox is suitable for use in fire-resisting doors and has been fitted by a specialist contractor.” Source
• Triple Star Fire and Security, fire doors and letterboxes — “For a letterbox to carry a fire rating, it must be tested to BS 476 Part 22, the British Standard for fire resistance testing of non-loadbearing elements of construction.” Source
• Scottish Government, practical fire safety guidance for existing high-rise domestic buildings — “Letter boxes would incorporate intumescent material which seals the opening when exposed to the heat from a fire.” Source
• Regulatory Reform (Fire Safety) Order 2005 article 9 — “The responsible person must make a suitable and sufficient assessment of the risks to which relevant persons are exposed for the purpose of identifying the general fire precautions he needs to take to comply with the requirements and prohibitions imposed on him by or under this Order.” Source
• Fire Safety (England) Regulations 2022 regulation 10 — “The responsible person, in relation to a building which contains two or more sets of domestic premises and which is above 11 metres in height, must use best endeavours to undertake checks of fire doors at the entrances of individual domestic premises in the building at least every 12 months.” Source
• MHCLG fire-door guidance, specialist checks — “You should not need to engage a specialist to carry these out.” Source
• MHCLG fire-door guidance, repair or replacement — “Where inspections identify the need for repair or replacement of any fire door (for example communal or flat entrance door), this work must be undertaken by a competent contractor as soon as reasonably practicable.” Source
• RiskFire, fire-door inspections — “A failed door is usually a £50 fix (self-closer, strip, gap) — not a £1,000 replacement; get the defect schedule before agreeing remedial work.” Source
• Regulatory Reform (Fire Safety) Order 2005 article 30 — “(c)require that person to take steps to remedy the failure within such period from the date of service of the notice (not being less than 28 days) as may be specified in the notice.” Source