What Are Fire Doors in Condominiums? Installation Standards, Types, and Inspection Obligations

Have you ever seen fire doors, one of the fire prevention features, in large buildings such as condominiums, office buildings, hotels, and schools?
Fire doors are essential equipment for preventing the spread of fires, but many people may not know the installation standards or inspection requirements for condominiums.
This article explains the features, standards, and inspection requirements for fire doors installed in condominiums.
If you want to learn more about fire doors in condominiums, please use this as a reference.

What Are Fire Doors?

Fire doors are doors equipped with fire protection functions.
They are primarily installed to prevent the spread of damage and the extension of fire in the event of a fire.
Here, we explain the features of fire doors, fire compartments, and types of doors.

Features of Fire Doors

Fire doors are doors with fire protection performance.
The terms "fire door" and "fireproof door" are common names; under the Building Standards Act, they are referred to as "fire shutters" (防火戸).
With the 2000 revision of the Building Standards Act, fire doors were divided into fire protection equipment and specified fire protection equipment.
Fire protection equipment corresponds to what were previously classified as Class B fire doors.
These include wire glass and wing walls used in openings of exterior walls and parts of fire compartments, primarily installed to avoid the risk of fire spreading from adjacent buildings.
Additionally, those that can block flames for 20 minutes or more fall under this category.
The other type, specified fire protection equipment, corresponds to what were previously classified as Class A fire doors.
These include fire doors and fire shutters used in fire walls, openings in fire compartments, exterior walls, and entrances to evacuation stairways.
The key feature of specified fire protection equipment is that it has a flame-blocking duration of one hour.

Fire Compartments Are Divided into Four Types

Fire compartments are divided into four types: area compartments, high-rise compartments, vertical shaft compartments, and mixed-use compartments (Building Standards Act Enforcement Order Article 112, which places area compartments in Paragraph 1, high-rise compartments in Paragraphs 7 through 10, vertical shaft compartments in Paragraphs 11 through 15, and mixed-use compartments in Paragraph 18).

・Area Compartments
Area compartments apply to quasi-fire-resistant buildings and buildings whose main structure has a fire-resistant construction.
Walls and floors must be of fire-resistant construction, and openings must be equipped with specified fire protection equipment.
Compartments divided by a certain area for the purpose of preventing large-scale fire spread are called area compartments.
For fire-resistant buildings, the compartment must be within 1,500㎡.

・High-Rise Compartments
High-rise compartments apply to the portion of a building on the 11th floor or above where the total floor area of a story exceeds 100 square meters (Enforcement Order Art. 112, Para. 7).
High-rise compartments may be considered a disadvantage in the event of a fire because fire suppression using ladder trucks is difficult.
For this reason, they are compartmentalized to suppress the spread of fire.
Floors and walls must be of fire-resistant construction, and openings must be equipped with fire prevention equipment as defined in Building Standards Act Article 2, Item 9-2(b) — a roughly 20-minute fire rating, not the 60-minute rating of specified fire prevention equipment. Specified fire prevention equipment only becomes mandatory where the compartment size is relaxed to 200 or 500 square meters under Paragraphs 8 and 9.

・Vertical Shaft Compartments
Vertical shaft compartments are designed to prevent vertical fire spread through staircases and atriums.
Staircases, elevators, and atriums fall under this category.
This applies to buildings with habitable rooms on basement floors or on the third floor or above.
The main structural parts must be quasi-fire-resistant construction or higher, walls and floors must be 45-minute quasi-fire-resistant construction, and fire protection equipment with flame-blocking performance is mandatory at openings.

・Mixed-Use Compartments
Mixed-use compartments apply to apartment complexes, assembly halls, parking lots, and similar facilities of a certain scale or larger.
This applies to buildings where part of the building falls under Article 27 of the Building Standards Act, such as cases where restaurants are located within an apartment complex.
However, relaxations apply if certain conditions are met, such as management by the same operator.
Basic mixed-use compartments must have walls and floors of one-hour quasi-fire-resistant construction, and openings must be equipped with specified fire protection equipment with flame-blocking performance.

Difference Between Normally-Closed and Automatic-Closing Types

The normally-closed type refers to a fire door that is closed during normal operation.
With a door closer installed, even if the door is opened when passing through, it automatically closes when released.
There is also a size restriction of within 3㎡.
On the other hand, the automatic-closing type refers to a fire door that is normally left open.
When smoke or heat is detected, the door closes to prevent fire from spreading.
There is no size restriction for automatic-closing fire doors, but when placed on evacuation routes, part of the door must be made into a pass-through door.

What Are the Characteristics of Fire Doors?

What exactly are the conditions and rules for fire doors?
As the name "fire door" suggests, the key performance characteristic to focus on is the flame-blocking duration.
The flame-blocking duration, sometimes referred to as the retained flame-blocking time, refers to how long the door can continuously block flames.

Fire Doors as Specified Fire Protection Equipment (Formerly Class A Fire Doors)

Fire doors are installed in different types depending on the fire compartment.
For specified fire protection equipment, they are installed at openings in area compartments, some high-rise compartments, and mixed-use compartments.
Regarding some high-rise compartments, these are compartments within 200㎡ or within 500㎡ that meet certain conditions.
For specified fire protection equipment, the door must have the performance to continuously block flames for one hour.
These doors serve the role of preventing fire spread when a fire occurs indoors and are placed at openings in fire compartments.
Specified fire protection equipment fire doors must be either normally closed or automatically closed in response to sudden temperature changes from fire, detection of smoke, or temperature rise.
For locations that require particular attention to safety, such as emergency elevators, boarding lobbies, evacuation stairway entrances, and mixed-use compartments, it is advisable to also add flame-blocking performance.
For this specified fire protection equipment fire door, the flame-blocking performance on both sides of the door is 60 minutes, which is also related to the materials and thickness used to meet this requirement.
For iron doors, the iron plate thickness must be 1.5mm or more.
For steel-framed concrete or reinforced concrete, it must be 35mm or more.

Fire Doors as Fire Protection Equipment (Formerly Class B Fire Doors)

Next, let's also look at fire protection equipment (formerly Class B fire doors).
Fire protection equipment (formerly Class B fire doors) is equipment that suppresses the spread of flames when a fire occurs.
There are those that have received approval from the Minister of Land, Infrastructure, Transport and Tourism, and those stipulated in public notices.
They are basically in a closed state, effectively blocking smoke and people when detected, and those with a flame-blocking duration of 20 minutes on one side of the door qualify.
This type of fire protection equipment fire door is often installed in some high-rise compartments and vertical shaft compartments.
Vertical shaft compartments apply to maisonette-type buildings with rooms underground or on the third floor or above where the main structural parts are quasi-fire-resistant construction or higher, as well as staircases and atriums.
Some high-rise compartments are high-rise compartments divided within 100㎡.

Learn About Fire Door Installation Standards!

Fire doors protect against fires, but there are installation standards for them.
What kinds of standards have been established?

Installation Standards for Exterior Wall Sections

When a fire occurs in the surrounding area, openings in exterior walls at risk of fire spread require flame-blocking performance that can withstand 20 minutes on both sides, or quasi-flame-blocking performance that can withstand 20 minutes on one side.
Areas at risk of fire spread include locations within 3m on the first floor or within 5m on the second floor from adjacent property boundaries or road centerlines.
Fire protection equipment at exterior wall openings of fire-resistant or quasi-fire-resistant buildings is required to have flame-blocking performance that can withstand 20 minutes on both sides.
A fire-resistant building is a structure that can withstand heat, meaning it can withstand fire until it subsides or can withstand fires occurring around the building.
A quasi-fire-resistant building does not qualify as a fire-resistant building as described above, but refers to a building that can suppress fire spread.

Installation Standards for Area Compartments

Fire door installation is also related to area.
This is because larger buildings tend to suffer greater damage when fires occur.
For example, if a fire breaks out in an area with a concentration of large commercial facilities, the potential for catastrophe is very high.
To minimize fire damage in such areas, it is important to divide them using equipment such as fire doors.
There are also "fire prevention districts," where urban planning has been established to enhance fire protection functions through building structural restrictions, and "quasi-fire prevention districts," which, like fire prevention districts, aim to prevent fire from spreading.
These must be installed in accordance with the different conditions of fire compartments.
For area compartments, the requirements vary depending on the structure and size of the building, and in principle, buildings with fire-resistant or quasi-fire-resistant construction with a total floor area of 1,500㎡ or more must be divided using fire doors for every 1,500㎡ of floor area.
For high-rise buildings with 11 or more floors, fire suppression and rescue activities become more difficult, so fire doors are installed with narrower floor area divisions.

Installation Standards for Evacuation Staircases and Special Evacuation Staircases

Evacuation staircases and special evacuation staircases serve as evacuation routes in the event of a fire.
Evacuation staircases include direct staircases leading to floors at basement level 2 or below, or ground floor level 5 or above.
Special evacuation staircases are direct staircases leading to floors at basement level 3 or below, or ground floor level 15 or above.
These staircases tend to experience longer congestion times during emergencies compared to ordinary staircases, and fire protection equipment must be used to prevent fire spread in order to ensure safety.
Therefore, fire doors with flame-blocking performance that are either normally-closed or automatically-closing linked to smoke detectors are required at evacuation staircase entrances.
This prevents smoke and flames from entering the staircase while enabling safe evacuation.

The "100 sqm" Rule for High-Rise Sections: Building Standards Act Enforcement Order Article 112, Paragraphs 7–10

If you search for information on fire compartmentation in Japanese condominiums, you will run into the number "100 square meters" over and over. It comes from Article 112, Paragraph 7 of the Building Standards Act Enforcement Order, which governs what is called a high-rise compartment (kōsō kukaku). In translation, the rule reads roughly as follows:

For the portion of a building on the 11th floor or above where the total floor area of any story exceeds 100 square meters, that portion must — notwithstanding Paragraph 1 — be divided by fire-resistant floors or walls, or by fire prevention equipment as defined in Article 2, Item 9-2(b) of the Act, into sections no larger than 100 square meters each. (Enforcement Order Art. 112, Para. 7)

Two details are easy to get wrong here, and both matter if you manage or own a unit in a Japanese high-rise. First, the rule applies only to floors from the 11th story up — a ten-story building is not subject to the 100 sqm compartment requirement at all, no matter how large each floor is. Second, the doors and other openings at that 100 sqm boundary only need to be ordinary "fire prevention equipment" with a roughly 20-minute fire rating, not the tougher "specified fire prevention equipment" rated for about an hour. That heavier standard belongs to the building-wide area compartment rule in Paragraph 1 (1,500 sqm sections), not to the high-rise rule.

For readers used to US or UK high-rise codes, this is a useful point of contrast: the IBC's approach to high-rise compartmentation leans heavily on sprinklers and smoke-proof enclosures rather than a flat floor-area cutoff, whereas the Japanese rule sets a hard 100 sqm ceiling specifically for stories at or above the 11th floor.

The finish-dependent relaxations to 200 sqm and 500 sqm

Provision	Maximum section size	Condition	Required opening
Order Art. 112, Para. 7	100 sqm	Applies by default above the 11th floor	Fire prevention equipment (Act Art. 2, Item 9-2(b)), ~20-min rating
Order Art. 112, Para. 8	200 sqm	Interior finish and substrate of walls (above 1.2m) and ceilings upgraded to quasi-noncombustible material	Specified fire prevention equipment, ~60-min rating (no substitute allowed)
Order Art. 112, Para. 9	500 sqm	Same finish and substrate upgraded to fully noncombustible material	Specified fire prevention equipment, ~60-min rating (no substitute allowed)

Why individual units in a tower aren't literally sliced into 100 sqm boxes

This raises an obvious question: if every floor above the 11th story needs 100 sqm compartments, why isn't a large condominium tower visibly chopped into small fire-doored boxes at every turn? The answer is an exemption in Paragraph 10 of the same article:

The preceding three paragraphs do not apply to stairwells, elevator shafts (including their landing lobbies), corridors and other spaces used for evacuation, or to a dwelling unit in an apartment building with a total floor area of 200 square meters or less, provided it is divided [from the rest of the building] by fire-resistant floors or walls and by specified fire prevention equipment (or, for buildings subject to Paragraph 7, by the fire prevention equipment described there). (Enforcement Order Art. 112, Para. 10)

In plain terms: a single dwelling unit of 200 sqm or less is exempt from the 100 sqm rule, as long as its own entrance is a fire-rated door and its surrounding floor and walls are fire-resistant construction. That is precisely why the front door of a Japanese condominium unit is a certified fire door — it isn't decoration or an arbitrary building-management preference, it is the component that makes this exemption legally valid. The same logic exempts corridors and stairwells, because chopping an evacuation route into small fire-doored segments would slow evacuation down and defeat the purpose of the rule.

This has a practical consequence for property managers: if two adjoining units are combined into one larger apartment during a renovation and the combined floor area exceeds 200 sqm, the unit may fall outside this exemption and trigger the underlying 100 sqm compartment requirement. When an owner proposes joining two units, it's worth having an architect confirm code compliance before signing off, rather than assuming a renovation confined to "exclusive-use" space is automatically fine.

What Are "Fire Prevention Districts and Quasi-Fire Prevention Districts" Where Fire Door Installation Is Required?

It is often thought that fire doors only need to be installed in applicable buildings.
Additionally, one might think it is fine to use them only when particularly concerned about fire.
However, under the City Planning Act, buildings located in areas included in quasi-fire prevention districts or fire prevention districts must meet specified fire protection conditions.
We will explain what fire prevention districts and quasi-fire prevention districts are, along with detailed building restrictions and how to research them.

What Are Fire Prevention Districts and Quasi-Fire Prevention Districts?

What kind of areas are fire prevention districts and quasi-fire prevention districts?
Many people may be hearing these terms for the first time, but these areas are designated under the City Planning Act as "areas designated to prevent the danger of fire in urban areas."
Areas that prevent or eliminate fire risks exist nationwide, but they are often designated in areas with dense buildings near train stations and around major roads.
This is because buildings are densely packed, so the aim is to prevent fire from spreading, and major roads are designed to ensure emergency vehicles such as fire trucks can pass through without obstruction during fires.
In Tokyo, new fire regulation zones have also been established, and restrictions and zones differ by area.
If you are building in a residential area or near a major road, it is a good idea to check whether it is designated as a fire prevention district.

Building Restrictions by Area

While building restrictions exist in all these areas, there are levels of strictness.
Here, let's look at the building restrictions for each area.

・Building Restrictions in Fire Prevention Districts
The strictest building restrictions apply to fire prevention districts.
In fire prevention districts, buildings with three or more floors qualify as fire-resistant buildings regardless of whether the total floor area is 100㎡ or less or 100㎡ or more.
For one- to two-story buildings, those with a total floor area of 100㎡ or less must be either fire-resistant or quasi-fire-resistant buildings.

・Building Restrictions in New Fire Regulation Zones
The next strictest standards after fire prevention districts apply to new fire regulation zones.
In this case, buildings with four or more floors must be fire-resistant buildings regardless of whether they are 500㎡ or less or 1,500㎡ or more.
One- to three-story buildings with 500㎡ or less must be quasi-fire-resistant buildings.

・Building Restrictions in Quasi-Fire Prevention Districts
Under the building restrictions of quasi-fire prevention districts, buildings with four or more floors must be fire-resistant buildings regardless of whether they are 500㎡ or less or 1,500㎡ or more.
Three-story buildings with 500㎡ or less may be fire-resistant buildings, quasi-fire-resistant buildings, or those conforming to certain technical standards, but if between 500㎡ and 1,500㎡, they must be either fire-resistant or quasi-fire-resistant buildings.
For one- to two-story buildings with 500㎡ or less using wooden construction, certain fire protection measures must be taken for exterior walls, eaves, and openings.
If between 500㎡ and 1,500㎡, as with three-story buildings, the structure must be either a fire-resistant or quasi-fire-resistant building.

・Article 22 Zones
In Article 22 zones, exterior walls must use fire-resistant materials, and the roof must use non-combustible materials that are difficult to burn.

How to Research Fire Prevention Districts and Quasi-Fire Prevention Districts

Fire prevention districts and quasi-fire prevention districts can be researched at municipal offices, but it is also possible to make inquiries through real estate companies, architects, or construction companies.
You can also search for these areas on the internet and view urban planning maps to check whether an area is designated as a fire prevention district.
In the case of Tokyo, there may be relatively new ordinances or changes made the following year, so be sure to verify that you have the most up-to-date information.

Does a Condominium Entrance Door Need "Specified Fire Prevention Equipment" or Just "Fire Prevention Equipment"?

This is one of the most commonly searched questions about condominium entrance doors, and the short answer surprises a lot of people: in most ordinary residential condominiums, a unit's front door only needs to satisfy "fire prevention equipment" (about a 20-minute fire rating), not the stricter "specified fire prevention equipment" (about a 60-minute rating). Which standard applies depends entirely on which type of fire compartment the door sits within.

Compartment type	Governing provision	Required opening	Fire rating
Area compartment (every 1,500 sqm)	Order Art. 112, Para. 1	Specified fire prevention equipment	~60 minutes
High-rise compartment (11th floor+, every 100 sqm)	Order Art. 112, Para. 7	Fire prevention equipment (Act Art. 2, Item 9-2(b))	~20 minutes
Vertical shaft compartment (stairs, atriums, elevator shafts, multi-story units)	Order Art. 112, Paras. 11–15	Fire prevention equipment (Act Art. 2, Item 9-2(b))	~20 minutes
Mixed-use compartment (buildings mixing uses listed under Act Art. 27)	Order Art. 112, Para. 18	Specified fire prevention equipment	~60 minutes
Exterior-wall openings adjacent to a compartment boundary (spandrels)	Order Art. 112, Paras. 16–17	Fire prevention equipment (Act Art. 2, Item 9-2(b))	~20 minutes

The 20-minute threshold comes from Enforcement Order Article 109-2, which defines fire prevention equipment as material that, "when subjected to ordinary fire heat, does not emit flame on the non-heated side for 20 minutes after heating begins." Article 109, Paragraph 1 of the same Order defines fire prevention equipment broadly as "fire doors, drenchers, and other equipment that blocks fire."

A unit's entrance is pushed up to the stricter "specified" standard only when that same door also happens to sit on an area-compartment or mixed-use-compartment boundary — most typically in a mixed-use building where the ground floor houses a retail shop, clinic, or nursery alongside residential units above. In a purely residential building with no other use mixed in, a unit's front door only has to meet the lower 20-minute standard.

The closing mechanism is spelled out in the code, not left to the manufacturer

Enforcement Order Article 112, Paragraph 19 specifies the structural behavior required of the fire prevention equipment and specified fire prevention equipment used at compartment boundaries: depending on the compartment type, the door must either remain closed at all times, or be linked to a smoke or heat detector so that it closes automatically when triggered. This is why a condominium unit's front door has a self-closing hinge or door closer that pulls it shut on its own — and why wedging the door open with a stopper defeats its legal function as a fire compartment boundary, not just building etiquette.

You can't simply swap it for a nicer-looking door

Fire prevention equipment and specified fire prevention equipment must either follow a structural method set by the Minister of Land, Infrastructure, Transport and Tourism, or carry individual ministerial certification. Certified products carry an approval number, typically on a label near the hinge edge of the door. Regardless of whether the entrance door counts as common property or exclusive-use space under the condominium's bylaws, it cannot legally be replaced with an uncertified door if it forms part of a required fire compartment. When a resident asks to change the look of their front door, the management company needs to check the compartment drawings — not just the bylaws — before approving.

Do Fire Doors Also Require Fire Prevention Inspections?

Fire doors require fire equipment inspections such as equipment inspections once every six months and comprehensive inspections once a year, as well as periodic fire protection equipment inspections.
Here, we explain the items checked during inspections and the costs involved in periodic inspections.

Fire Prevention Inspections Are Mandatory for Apartment Complexes

The role of fire doors is to contain flames and smoke within a certain compartment when a fire occurs in a building.
Therefore, when managing rental properties and apartment complexes, regular inspections must be conducted to ensure proper functioning in the event of an emergency.
According to Article 17-3-3 of the Fire Services Act, the parties related to fire protection objects are obligated to conduct inspections, and the parties concerned are the owners, managers, and occupants of fire protection objects or fire-fighting objects.
In other words, owners and managers of rental properties are obligated to conduct fire equipment inspections and periodic fire protection equipment inspections.
Specifically, apartment complexes with a floor area of 150㎡ or more must conduct inspections once every six months, once a year, and once every three years, and are required to report to the fire chief of the jurisdiction municipality, with penalties for non-compliance.
Fire prevention inspections can only be conducted by fire equipment engineers or fire equipment inspection specialists.
However, for apartments and condominiums with a floor area of less than 1,000㎡, it is also acceptable for unqualified owners or managers to conduct inspections.
In practice, however, owners rarely conduct inspections themselves, and in most cases, inspections are conducted by qualified personnel.

What Is Checked During Inspections?

In fire equipment inspections and periodic fire protection equipment inspections, various equipment is inspected in addition to fire doors, including fire extinguishers, automatic fire notification systems, evacuation equipment, emergency lights, emergency warning systems, and water supply connections.
Among these, fire doors are checked for opening and closing operation and presence of damage.
First, it is necessary to check whether any objects are placed near the fire door and whether it can operate normally.
If objects are left immediately near the fire door, it may not be able to open and close properly, potentially increasing casualties.
Next, the installation condition of the door is checked.
By checking for damage to detailed parts such as the door, frame, and hardware, it is determined whether the door can be used without problems.
Finally, the hazard prevention function is confirmed.
It is very important that the fire door operates normally so that people nearby are not harmed when it closes.
After confirming that the weight, closing speed, and kinetic energy of the fire door are within certain standards, an inspection is also required to check whether the pressing force when caught between the fire doors meets the specified standards.

What to Do When You Receive a Periodic Inspection Notice?

When the inspection period arrives, the specific administrative authority sends a notice to the building owner or manager for the fire prevention inspection.
Upon receiving the inspection notice, you must promptly find an inspection company and conduct the inspection.
In some cases, the notice may not arrive even when the inspection period comes.
However, since fire prevention inspections remain mandatory, be sure to conduct an inspection when the inspection period arrives.
After receiving the notice, first look for an inspection company.
For fire prevention inspections, please commission an inspection company that employs fire equipment engineers or fire equipment inspection specialists, holds these qualifications, and has extensive experience, in order to prevent accidents and disasters.
Companies that handle 200 or more cases per year, have 20 or more employees, and do not charge additional fees after the inspection are recommended.
Once you have found an inspection company, prepare the necessary documents for the inspection.
For the initial inspection, prepare the confirmation certificate, inspection certificate, architectural floor plan, equipment drawings, area-indicated drawings, and fire equipment inspection report at least one week before the inspection date.
For the second inspection and beyond, you need to prepare the previous report, floor plan, and fire equipment inspection report.
The inspection report must be submitted to the fire chief of the municipality within one month after the fire inspection.
The inspection company will prepare the report within about one week after the inspection.
Once the report is sent by mail, the building owner or manager stamps it and returns it to the inspection company.
If three months have passed since the inspection date, a re-inspection is required, so when the report arrives, stamp it promptly and return it.
When the stamped report is returned, the inspection company submits the report to the specific administrative authority.
After that, within about two months, a copy of the report is returned from the specific administrative authority to the inspection company.

How Much Does a Periodic Inspection of Fire Protection Equipment Cost?

The cost of periodic inspections for fire protection equipment including fire doors varies depending on the total floor area of the building.
For example, the fire equipment inspection costs within Tokyo's 23 wards are as follows:

・Total floor area under 1,000㎡: 30,000 yen
・Total floor area under 2,000㎡: 35,000 yen
・Total floor area 2,001㎡ or more: Quote required

Some companies require a separate estimate if the total floor area exceeds 3,000㎡, so you will need to check with the inspection company.
The above costs include inspection fees for fire extinguishers, evacuation equipment, emergency lights, water supply connections, and other equipment.
Looking at inspection costs per piece of equipment, the guideline for a fire door is approximately 3,000 yen per location.
Additionally, fire prevention inspection costs vary depending on how many pieces of equipment there are.
The number of fire equipment items also differs depending on whether there are fewer than 10 units or 20 or more units.
During fire prevention inspections, there are cases where entry into apartments or condominium rooms is required, so residents must be notified in advance.
If residents cannot be present, the owner or management company must stand in as a substitute, so be sure to confirm this thoroughly.

Depending on How Fire Doors Are Used, There May Be Violations of the Fire Services Act

Fire doors are indispensable for safely managing buildings.
Fire doors are required to be installed under the Building Standards Act, but depending on how they are used, there is a possibility of violating the Fire Services Act.
For example, this includes cases where a door stopper is wedged into a fire door to keep it open while loading cargo, or where items are placed around the fire door.
Fire doors are meant to prevent fire spread by closing the door when a fire breaks out.
Therefore, leaving them open or placing objects that obstruct opening and closing constitutes a violation.
In fact, in 2001, a fire broke out in a mixed-use building in Shinjuku, Tokyo, resulting in the loss of 44 lives.
This mixed-use building was a narrow site of 516㎡, consisting of a four-story above-ground and two-story below-ground structure.
The fire started near the elevator on the third floor, spread upward to higher floors, and caused extensive damage with many lives lost due to carbon monoxide accumulation.
At the time, unused supplies and garbage were placed around the fire doors, and they were left open, indicating that the fire doors were not operating normally.
Had the fire doors been operating normally, it might have been possible to contain the damage.
There are many cases where violations of the Fire Services Act lead to catastrophic damage.
It is necessary to maintain a state where immediate action can be taken in case of emergency, such as not leaving fire doors open and not placing objects around them.
Also, according to the "Standard Condominium Management Regulations" created by the Ministry of Land, Infrastructure, Transport and Tourism, owners and managers of apartments and condominiums can request access to exclusively-owned areas when necessary, and residents must not refuse such requests.
While management regulations differ by rental property, based on the Ministry of Land, Infrastructure, Transport and Tourism's Standard Condominium Management Regulations, it is possible to include a provision stating that access for inspection may occur even when residents are absent.
If a resident refuses access and a fire subsequently occurs causing damage, the resident may be held liable for compensation.
While obtaining understanding from residents is fundamentally important, incorporating this into management regulations makes it easier to establish as a rule.

Reading the Statutes: Where the Building Standards Act Ends and the Fire Service Act Begins

People searching for "what article of the Fire Service Act covers fire door installation standards" are usually surprised to learn that the Fire Service Act does not set installation standards for fire doors at all. The Building Standards Act governs where fire doors must be installed; the Fire Service Act governs how they must be kept usable and inspected on an ongoing basis. The table below maps the key provisions.

Purpose	Statute / Article	What it covers
Definition of fire prevention equipment	Building Standards Act Art. 2, Item 9-2(b); Enforcement Order Art. 109	Fire prevention equipment = fire doors, drenchers, and other flame-blocking equipment
Fire-rating standard	Enforcement Order Art. 109-2	No flame on the non-heated side for 20 minutes after heating begins
Where compartments must be installed	Enforcement Order Art. 112	Area (Para. 1), high-rise (Paras. 7–10), vertical shaft (Paras. 11–15), mixed-use (Para. 18), closing behavior (Para. 19)
Ongoing maintenance obligation	Building Standards Act Art. 8	Owners, managers, and occupants must endeavor to keep the building constantly in a legally compliant condition
Periodic government reporting	Building Standards Act Art. 12, Paras. 1 & 3	General building survey (Para. 1) and periodic inspection of specified building equipment, including fire prevention equipment (Para. 3)
Duty not to obstruct a fire door's closing	Fire Service Act Art. 8-2-4; Enforcement Order Art. 4-2-3	Requires the person with authority over building management to keep items from being left where they would block a fire door from closing; applies to buildings listed in Appended Table 1, including apartment buildings
Inspection and reporting of firefighting equipment	Fire Service Act Art. 17-3-3	Requires periodic inspection and reporting of results to the fire chief or fire station chief
Corrective order for a dangerous condition	Fire Service Act Art. 5-3, Para. 1	Authorities may order the owner, manager, or occupant to take necessary measures against a condition that would obstruct firefighting or evacuation

What actually happens if you keep blocking a fire door

The rule against leaving belongings in front of a fire door is not a courtesy norm — it is a distinct legal obligation with a criminal penalty attached. Fire Service Act Article 8-2-4 requires the person with authority over a building's management to "manage [the premises] so that no item obstructing the closing of a fire door is left unattended or otherwise allowed to remain." Under Fire Service Act Enforcement Order Article 4-2-3, this duty applies to the buildings listed in Appended Table 1 — a list that explicitly includes apartment buildings.

If the obstruction continues, the fire chief, the head of the fire station, or a fire official can issue a corrective order under Fire Service Act Article 5-3, Paragraph 1. Ignoring that order is a criminal offense:

A person who violates an order issued under Article 5-3, Paragraph 1 is punishable by imprisonment for not more than one year or a fine of not more than ¥1,000,000. (Fire Service Act Art. 41, Para. 1, Item 1)

A June 2025 reform of Japan's Penal Code consolidated the old separate categories of "imprisonment with labor" and "imprisonment without labor" into a single custodial sentence (kōkin-kei), and the Fire Service Act's text now uses that unified term as well; older commentary that still refers to "penal labor" is describing the pre-reform terminology, not a lesser or different penalty. Separately, if an employee of a company violates this provision in the course of their duties, both the individual and the company can be fined (Fire Service Act Art. 45, Item 3).

For a property management company, the practical takeaway is that treating a blocked common-area fire door as a "please be considerate" notice understates the legal exposure. Bicycles, strollers, and delivery boxes parked in the door's swing path are not just a nuisance about corridor width — leaving them there specifically obstructs the door's closing mechanism, which is the exact conduct Article 8-2-4 addresses.

Beyond Fire Protection Equipment! Check Other Disaster Prevention Equipment as Well

Disaster prevention equipment is not limited to fire protection equipment such as fire doors.
Disaster prevention equipment includes types such as fire suppression equipment, alarm systems, evacuation equipment, and smoke control equipment.
All of these play important roles in protecting people from disasters.
Here, we introduce the types and roles of disaster prevention equipment.

Fire Suppression Equipment

Fire suppression equipment is equipment designed to prevent fire spread in buildings when a fire breaks out.
It can also suppress flames until firefighters arrive.
Fire suppression equipment includes indoor fire hydrant systems, outdoor fire hydrant systems, sprinkler systems, water mist fire suppression systems, inert gas fire suppression systems, dry chemical fire suppression systems, motorized fire pump systems, and halogenated agent fire suppression systems.
Technical standards for each are established by fire agency public notices, so verification is required during installation.
Among these, fire hydrant systems can be installed both indoors and outdoors and can handle situations beyond the capacity of portable fire extinguishers.
They have high water discharge volume and effective range, with superior firefighting capacity.
Additionally, sprinkler systems and water mist fire suppression systems are equipment that automatically extinguishes fires by discharging water from heads.
Various methods are used to prevent fire spread in buildings, including those using powder agents and foam, those using inert gas, and those using halogenated agents.
In apartments and condominiums, automatic fire alarm systems, emergency warning systems, indoor fire hydrants, and sprinkler systems are often installed.

Alarm Systems

Alarm systems are equipment designed to detect fires or gas leaks and notify the people inside a building.
Alarm systems include automatic fire alarm systems, manual fire alarm systems, gas leak fire alarm systems, electrical leakage fire alarm systems, emergency alarms, and fire alarm systems that notify fire departments.
All are reporting systems mandated by the Fire Services Act, and are indispensable for both reporting and for detecting and sounding alarms.
Among these, fire alarm systems come in automatic and manual types, which sound emergency bells to notify of fires and display fire zone lamps to indicate where the fire is occurring.
For electrical leakage and gas leaks, detection and notification must occur in advance of an incident.
Fire alarm systems come in a differential type that activates when the indoor temperature rises sharply, and a fixed-temperature type that activates when the indoor temperature reaches a certain level, with the characteristic of differing installation locations.
The differential type is compatible with various locations, while the fixed-temperature type is installed in places prone to temperature fluctuations, such as kitchens and boiler rooms.

Evacuation Equipment

Evacuation equipment refers to mechanical devices and equipment used for evacuation when some type of disaster such as fire or earthquake occurs.
Evacuation equipment is divided into evacuation devices and emergency lights/signs.
Evacuation devices are used when there are no evacuation staircases available, and are characterized by being used as emergency and supplementary measures.
Examples include evacuation ropes, evacuation ladders, slide escapes, slide poles, evacuation gangways, and descent control devices and rescue bags.
In apartments and condominiums, evacuation ladders and slide escapes are often installed, so some residents may actually have these installed.
Emergency lights and signs are used to indicate the location of emergency exits and the direction of evacuation.
There are emergency lights with lighting devices and signs without lighting devices, and it is a principle that they must be easily identifiable by anyone.
It is stipulated by law that emergency lights and signs must consist of symbols indicating evacuation exits, arrows pointing in the direction of evacuation, and the text "Emergency Exit," and are characterized by their green color.
Emergency lights are equipped with emergency power sources to handle power outages caused by disasters, enabling immediate illumination during emergencies.

Smoke Control Equipment

Smoke control equipment is equipment designed to discharge smoke in order to prevent smoke from spreading due to fire.
It is said that approximately 80% of fire fatalities are caused by smoke inhalation, making the installation of smoke control equipment critically important.
Examples include fire doors, fire shutters, hanging walls, and smoke vents, and smoke control equipment includes natural smoke exhaust systems and mechanical smoke exhaust systems.
Natural smoke exhaust systems are windows installed near the ceiling of a building, which are opened during a fire to exhaust smoke.
Mechanical smoke exhaust systems are ventilation fan-like devices with intake ports on the ceiling surface that mechanically draw in smoke and discharge it outside.
Smoke vents must be installed within 80cm of the ceiling or at the ceiling level in each compartment after the floor area is divided by smoke barriers for every 500㎡, and must be within a horizontal distance of 30cm from each smoke control compartment.
In addition, there are differences in installation standards between natural smoke exhaust systems and mechanical smoke exhaust systems, so careful verification is necessary.

In apartment complexes such as apartments and condominiums, fire door installation may be required, and installation standards differ depending on the exterior wall section, area compartments, evacuation staircases, and other factors.
When installing fire doors, the Fire Services Act mandates regular inspections, and using them incorrectly may result in violations of the Fire Services Act.
For fire doors, be sure to verify the installation standards and usage before installation.
It is also important to understand disaster prevention equipment beyond fire protection equipment such as fire doors, and to make efforts to ensure residents can feel at ease.

How a Fire Door Actually Closes

A fire door that normally stands open and only swings shut during a fire isn't operating by magic — it's a mechanical system built to satisfy the closing-behavior requirement in Enforcement Order Article 112, Paragraph 19. Japanese building code recognizes two distinct closing types, and understanding the difference explains a lot of behavior that otherwise looks like a malfunction.

	Always-closed type (jōji-heisa-shiki)	On-demand closing type (zuiji-heisa-shiki)
Normal state	Closed	Held open
Closing force	Spring tension in the door closer	A hold-open device (a "release") disengages, letting the door closer take over
Trigger	Closes automatically each time someone lets go of it after passing through	A smoke or heat detector signal cuts power to an electromagnetic hold-open device, releasing the door
Typical location	Unit entrance doors, pipe-shaft access panels, stairwell doors	Mid-corridor doors, boundaries between parking and residential areas, large fire shutters over wide openings
How it's checked	Reviewed as part of the general building survey (Art. 12, Para. 1)	Subject to periodic fire prevention equipment inspection

The hold-open device on an on-demand door is engineered to fail toward "closed": it uses electricity to hold the door open, not to close it. That means a power outage releases the hold-open device and lets the door swing shut on its own — which is the system working exactly as intended, not a defect. Readers familiar with fire-rated doors in the US or UK will recognize the same design logic behind magnetic door holders wired into a fire alarm panel: power off means the magnet releases and the self-closing hinge takes over.

Wide fire doors and shutters often have a walk-through leaf built in

Wide fire doors and large fire shutters frequently include a smaller "walk-through" leaf — a pass door set into the larger door — that stays operable even after the main door or shutter has closed. Because a closed fire door is designed not to be forced back open, this walk-through leaf is often the only way through once the door has activated. Keeping this leaf unlocked and clear of stored items is a basic and often-overlooked part of common-area management.

Closing speed and force are also regulated, not left to chance

Because a closing fire door can injure someone caught in its path, the code also requires a safety mechanism to limit that risk. As covered in the inspection section of this article, periodic fire prevention equipment inspections check the door's weight, closing speed, and kinetic energy, along with the pinching force if someone is caught between the door and the frame — the inspection isn't just confirming "does it close," but "does it close safely." In practice, one of the most common defects has nothing to do with the door itself: a corridor renovation that layers new flooring over the old, without trimming the door's bottom clearance, leaves the door scraping the floor before it reaches full closure. Whenever corridor flooring is redone, it's worth physically checking that every fire door in that corridor still closes flush against the floor.

Frequently Asked Questions About Fire Doors in Condominiums

Q1. How often should fire doors be inspected?

It depends on the type of door, because two separate systems apply. On-demand closing fire doors and shutters — the kind that stay open and close only when triggered by a smoke or heat sensor — fall under the periodic fire prevention equipment inspection in Building Standards Act Article 12, Paragraph 3: they must be inspected at intervals of no more than one year, with results reported to the special government agency (tokutei gyōsei-chō) within one month of the inspection. (Always-closed doors, fire dampers, and exterior-wall openings are excluded from this particular inspection.) Always-closed fire doors, by contrast, are checked as part of the broader periodic inspection of specified buildings under Article 12, Paragraph 1 — in Tokyo, condominiums generally report on a three-year cycle. Whether a given apartment building is subject to either reporting requirement at all depends on a designation made by the special government agency, so it's worth confirming your building's status directly. This is separate again from the firefighting-equipment inspection and reporting duty under Fire Service Act Article 17-3-3.

Q2. What should you do if a fire door won't close?

Contact your property management company or a specialist immediately and request repair and adjustment. A fire door that won't close isn't primarily a Fire Service Act violation — it's a breach of the maintenance obligation in Building Standards Act Article 8, which requires owners, managers, and occupants to keep the building constantly in a legally compliant condition. The cause is often not the door itself: a common culprit is corridor flooring added during a renovation that now scrapes the door's bottom edge, along with sagging hinges or a door closer that has drifted out of adjustment. Mentioning these possibilities when you report the problem can speed up the repair.

Q3. Is it okay to place objects in front of a fire door?

No — and this is a legal obligation, not just good practice. Fire Service Act Article 8-2-4 requires the person with authority over the building's management to keep items from being left where they would obstruct a fire door's closing, and apartment buildings are explicitly covered under Fire Service Act Enforcement Order Article 4-2-3. Ongoing violations can lead to a corrective order under Article 5-3, Paragraph 1, and disregarding that order is punishable under Article 41, Paragraph 1, Item 1 by up to one year of imprisonment or a fine of up to ¥1,000,000.