Fire Alarms in Rental Apartments—Complete Guide to Installation Requirements, Cost Division, and Battery Replacement

Fire Alarms in Rental Apartments—Is Installation Mandatory?

Have you ever experienced a fire alarm that won't stop sounding or a blinking battery-low indicator while renting? In fact, there are legal obligations regarding the installation and maintenance of fire alarms, and the cost responsibility is shared between tenants and landlords. Let's learn the correct information in this article.

Installation Requirements for Residential Fire Alarms

Installation of residential fire alarms is mandated by the Fire Service Act and fire prevention ordinances of each prefecture. Installation became mandatory starting with new buildings in 2006 and extending to all existing residences by 2011. Today, installation is required in all residential buildings.

Required installation locations:

• •All rooms used for sleeping (bedrooms)
• •Stairs (in buildings with 2 or more floors)
• •Kitchen (requirements may vary by ordinance)

In most rental properties, alarms are already installed before move-in, but if they are not, you have the right to request the landlord (owner) to install them.

Cost Division Rules—Who Pays?

The cost responsibilities for fire alarm installation and maintenance are as follows:

Landlord (Owner/Management Company) Responsibility:

• •Cost of purchasing and installing the fire alarm unit
• •Cost of replacement due to aging or malfunction of the device
• •Construction costs for additional installation if needed in certain locations

Tenant Responsibility:

• •Battery replacement costs when batteries die (considered normal consumables)
• •Repair or replacement costs for damage caused by tenant negligence
• •Reinstallation costs if the tenant removes the unit without authorization

In short, tenants bear the cost of battery replacement during normal use, while landlords bear the cost of replacing units due to aging or malfunction of the equipment itself. However, if the lease agreement contains special provisions, those may take precedence.

How to Handle Dead Batteries

Most residential fire alarms emit a "beep" warning sound intermittently as batteries near the end of their life. This sound repeats every few tens of seconds to a few minutes, making it extremely bothersome.

Steps for Battery Replacement:

1. Remove the alarm unit from the ceiling (most models twist out)
2. Check the battery model number (commonly CR17450 or lithium batteries)
3. Purchase the same type of battery from a home center, electronics store, or convenience store and install it
4. Reinstall the unit in its original position and press the test button to confirm normal operation

Battery life typically ranges from 5 to 10 years depending on the model. After replacing the battery, noting the date helps you remember when the next replacement is due.

Note: Some models have non-replaceable built-in batteries. In such cases, the entire unit needs to be replaced, requiring notification to your landlord.

What to Do When False Alarms Occur

False alarms—when the alarm sounds without actual fire—commonly occur from the following causes:

Main Causes of False Alarms:

• •Cooking smoke or steam enters the sensor
• •Cigarette smoke (in smoking-permitted units)
• •Use of incense or spray products
• •Insects or small dust particles enter the sensor
• •Environmental changes such as high temperature, low temperature, or high humidity

How to Respond to False Alarms:

1. Turn on ventilation fans and open windows to clear smoke or steam
2. Press the alarm's "silence" or "stop" button (temporarily stops the sound)
3. Wave a fan or similar object at the unit to clear dust from the sensor

If false alarms occur frequently or the alarm continues sounding even after pressing the silence button, the device may be malfunctioning or nearing the end of its life. Report the issue to your management company and request a replacement.

Fire Alarm Lifespan and Replacement Guidelines

Residential fire alarms should be replaced approximately 10 years from the date of manufacture. Check the manufacturing year printed on the back or side of the unit.

Devices that are more than 10 years old may have degraded sensors and fail to detect fires accurately. If your alarm has been installed for many years, we recommend consulting with your management company about replacement.

Important Notes When Moving Out

Do not remove the fire alarm when moving out. Due to legal installation requirements, you must return the unit in its original state.

Additionally, if you move out with dead batteries, the problem transfers to the next tenant. Before moving, confirm the alarm works properly and replace dead batteries if needed before returning the unit. This is the considerate approach.

Additional Fire Prevention Measures You Can Take While Renting

In addition to properly maintaining fire alarms, the following measures are also effective:

Fire Extinguisher (Optional): Installing a fire extinguisher in a rental apartment is not required, but keeping a small one near the kitchen can be helpful for initial firefighting efforts.

Outlet Management: Avoid overloading outlets with multiple plugs, and regularly clean outlets where dust has accumulated (which can cause tracking fires).

Pre-Sleep Confirmation Habit: Develop a habit of confirming that the gas stove is turned off and checking power cords for safety before bed.

Summary—Safe Rental Living Through Proper Knowledge

Fire alarms are critical safety equipment that protect lives. By understanding installation requirements, cost divisions, battery replacement, and how to respond to false alarms, you'll be prepared to handle any situation calmly. Don't hesitate to consult your management company about equipment malfunctions or installation issues, and maintain the system in proper working order.

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