Apartments in Japan

A friendly guide to Japanese apartments: reading floor plans, tatami sizes, the genkan entrance, rental terms and everyday house manners.

Published October 15, 2026 at 11:06 PM JST | By Tokyo Paul

Quick answer: Japanese apartments are compact, tidy and cleverly designed, with built-in storage and a calm, clean spirit. Floor plans use codes such as 1K and 2LDK, room sizes are often counted in tatami mats, and shoes come off in the genkan entrance. Renting involves a deposit, an agent fee and usually a guarantor.

Small Spaces, Smart Design

Japanese apartments are famous for being compact, tidy and cleverly designed. Rooms are often modest in size, storage is built in, and every corner has a purpose. For many residents and visitors, this efficiency is part of the charm: a well-planned apartment can feel calm, comfortable and surprisingly spacious. Whether you are renting a short-term stay, planning a longer move or simply curious about daily life, understanding how Japanese housing works will make everything easier.

This guide explains how to read floor plans, how rooms are measured, what the entrance area is for, how rental agreements typically work, and which house manners are good to know. Rules and prices change by city, building and landlord, so treat the details as a general introduction and rely on a real estate agent or building manager for specifics in your own case.

One idea sits behind many Japanese housing customs: the home is a clean, peaceful retreat. Shoes come off at the door, things are kept neat, and neighbors are greeted with polite courtesy. If you embrace that spirit, you will feel at home quickly.

Reading a Japanese Floor Plan

Real estate listings in Japan use a short code to describe the layout. The letters stand for R (room), L (living room), D (dining room) and K (kitchen), and the number in front tells you how many separate rooms there are besides the shared living, dining and kitchen space. A 1K, for example, has one room and a separate kitchen, a 1DK adds a dining area to the kitchen, and a 2LDK has two rooms plus a combined living, dining and kitchen area. Typically an LDK is a larger shared space than a DK, and a 1R is a single room that includes the kitchen.

The bathroom and toilet are usually not listed in the code, although they exist in almost every apartment. Japanese bathrooms often have a separate toilet room and a deep tub in a wet room, where you wash before soaking. In many compact apartments the bath, sink and toilet are placed in neat, separate compartments, which makes them easy to keep clean and comfortable to use.

Since the codes are conventions rather than strict rules, it is wise to look carefully at the floor plan, the photographs and the stated area in square meters. If possible, visit the apartment or ask for a video tour, and check details such as storage space, laundry facilities and the direction of the windows, since a sunny apartment makes a big difference to daily comfort.

Tatami and Room Sizes

Room sizes in Japan are often described by the number of tatami mats they can hold, written with the counter jo. A traditional tatami mat is woven from rush grass over a firm core, and standard mats are roughly 90 by 180 centimeters, though sizes vary by region. A six-mat room is a common size, and tatami counts remain a useful shorthand even in modern apartments with wooden floors.

Many rental apartments now have wooden or cushioned flooring, but some still include a tatami room, which gives you a taste of traditional living. Tatami smells fresh and grassy, feels soft underfoot and is comfortable for sitting and sleeping on a futon. It does need a little care: avoid dragging heavy furniture, wipe up spills quickly and let the room air out regularly. Slippers are usually not worn on tatami, so you step onto the mats in bare feet or socks.

Another unit you may meet is the tsubo, an area of about two tatami mats, or roughly 3.3 square meters. It is used more often for land and larger floor areas than for single rooms, but it appears in conversations about housing. You can mostly rely on square meters in modern listings, and a quick conversion is easy.

The Genkan and Everyday Manners

Step through the front door and you reach the genkan, a small entrance area at ground level where shoes are removed. A step or a change of flooring marks the border between outside and inside, and you step up onto the main floor in socks or slippers. A built-in shoe cabinet, called a getabako, keeps footwear neat, and a tidy genkan is considered a welcoming sign. The idea is to keep the dirt of the street out of the living space, which is especially pleasant when you sit or sleep close to the floor.

Visitors should follow the same rule: take off your shoes in the genkan, turn them neatly to face the door if there is space, and step up without touching the genkan floor in your socks. Many homes also provide separate slippers for the toilet room, a small, practical detail that keeps hygiene simple. If you are invited to someone's home, a clean pair of socks without holes is a thoughtful touch.

Daily life has a few other customs worth knowing. Garbage is sorted into categories and put out on set days at a designated place, according to local rules, so it is worth reading the guide from the city office or building manager. Noise is also kept down in the evening and early morning, as walls can be thin. Small courtesies such as a friendly greeting to neighbors, keeping shared areas tidy and following building notices make the community pleasant for everyone.

Renting and Settling In

Renting in Japan has its own vocabulary. Traditionally a tenant pays a security deposit, called shikikin, which is held against damage, and in some cases a payment called reikin, often translated as "key money," which is a non-refundable gift to the landlord. Reikin was once large in big cities, but many landlords now ask for less or none at all. There is typically an agent fee, often equal to about one month of rent, as well as the first month's rent, and sometimes charges for guarantee services or insurance.

A typical lease in the Tokyo area lasts about two years, and renewal commonly comes with a fee. Many renters are also asked to have a guarantor, or to use a guarantee company, which will cover the rent if there is a problem. Because these terms differ, it is helpful to ask your agent to explain all initial costs in writing before signing and to check what the monthly management fee includes.

There are different building types as well. The Japanese word apaato usually refers to a smaller rental building of a few stories, while mansion refers to a sturdier building, often of reinforced concrete with an elevator and a secure entrance. Furnished and short-term apartments are available for visitors and newcomers, and these can be a gentler way to get started while you learn about neighborhoods. Online listings often offer English support, and agents who work with international tenants can help with paperwork.

Location is often more important than size in Japan. Many people choose apartments within walking distance of a train station, since the rail network makes it easy to get around. A short walk to a supermarket, a convenience store and a local park can make a small apartment feel generous. Neighborhoods have their own character, from lively shopping streets to quiet residential lanes, and exploring on foot is a good way to find one that suits you.

When you move in, you will likely take care of a few practical steps: setting up electricity, gas and water, arranging internet access, and registering your address at the local city or ward office if you are a resident. Many apartments come without lighting fixtures or appliances, so it is useful to ask what is included. Furniture and household goods are easy to find at home centers and secondhand shops, and small, foldable or multi-purpose items fit nicely in compact rooms.

Make the apartment cozy with simple touches. A few plants, soft lighting and a clever use of storage can turn a compact space into a comfortable home. Many residents say the secret is to keep belongings simple and well organized, and Japanese stores offer a huge range of tidy storage solutions to help.

Quick Takeaways

Japanese apartments reward careful planning. Learn the floor plan codes, remember that rooms are often measured in tatami mats, and treat the genkan as the line between outside and inside. Ask your agent to explain every cost, from deposit to renewal, and read the building's rules on garbage and noise so that you feel confident from day one.

Above all, enjoy the spirit of neat, thoughtful living that these homes encourage. With shoes off at the door, a tidy room and friendly neighbors, a compact apartment can become a calm and comfortable base for life in Japan.

Frequently Asked Questions

What do 1K, 1DK and 2LDK mean in Japanese apartment listings?

In Japanese listings, R stands for room, L for living room, D for dining room and K for kitchen, and the number shows how many separate rooms there are. A 1K has one room and a separate kitchen, a 1DK adds a dining area, and a 2LDK has two rooms plus a shared living, dining and kitchen space.

What is a genkan in a Japanese home?

The genkan is the small entrance area of a Japanese apartment at ground level, where shoes are removed. A step or change of flooring marks the border between outside and inside. A built-in shoe cabinet called a getabako keeps footwear neat, and visitors follow the same shoes-off rule.

What costs are involved in renting an apartment in Japan?

Renting an apartment in Japan typically involves a security deposit called shikikin, sometimes non-refundable key money called reikin, an agent fee often around one month of rent, and the first month's rent. A typical lease in the Tokyo area lasts about two years, and renewal commonly comes with a fee.

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More guides from Tokyo Paul: Work Culture in Japan, Your First Day in Japan: Arrival Made Easy, Weddings in Japan.