Average Apartment Size in Tokyo

Updated 25 June 2026 · Statistics Bureau of Japan (2023 Housing and Land Survey), MLIT

Typical single-person Tokyo rental (1R / 1K)

25 m²

≈ 269 ft²

That is also Japan's minimum housing standard for one urban resident. Across all dwellings, including owner-occupied houses, the Tokyo average is about 64 m² (689 ft²), the smallest of Japan's 47 prefectures.

Tokyo has some of the smallest homes in the developed world. The flat most newcomers rent is a 1K of around 25 square metres, about 269 square feet, sitting right on Japan's minimum housing standard for a single person. Counting every dwelling, including owner-occupied houses and family condominiums, the average across Tokyo is about 64 square metres, the smallest figure of any Japanese prefecture, against roughly 140 square metres in Toyama. The table below shows typical sizes by Japanese apartment layout, in both square metres and square feet.

Tokyo Apartment Size by Layout

Layout	Typical m²	Typical ft²
Tokyo average (all dwellings)	~64	~689
1R / 1K	13-25	140–269
1DK	25-35	269–377
1LDK	30-50	323–538
2LDK	50-70	538–753
3LDK	65-90	700–969

Layout

Typical m²

Typical ft²

Tokyo average (all dwellings)

~64

~689

1R / 1K

13-25

140–269

1DK

25-35

269–377

1LDK

30-50

323–538

2LDK

50-70

538–753

3LDK

65-90

700–969

Tokyo average dwelling floor area: 2023 Housing and Land Survey, Statistics Bureau of Japan (Tokyo is the smallest of the 47 prefectures). Layout ranges follow standard Japanese rental-market conventions (1R/1K through 3LDK); advertised areas typically include the genkan entrance, so usable living space is smaller.

What Each Layout Code Means

1R / 1K

13-25 m²

One room (1R) or one room plus a separate kitchen (1K). The default single-person rental. A 1K listed at 25 m2 often has a main room of only 12-13 m2 once the kitchen, entrance and bathroom are counted.

1DK

25-35 m²

One room plus a dining-kitchen. A step up for a single person or a tight couple. The DK is large enough to fit a small table.

1LDK

30-50 m²

One bedroom plus a combined living-dining-kitchen. The most popular layout for couples and well-paid singles in central Tokyo.

2LDK

50-70 m²

Two bedrooms plus a living-dining-kitchen. A family-sized flat by Tokyo standards; common in the suburbs and newer wards.

3LDK

65-90 m²

Three bedrooms plus a living-dining-kitchen. The standard owner-occupier family mansion (condominium). Scarce and expensive inside the 23 wards.

Minimum Apartment Size and the Tsubo

Japan does not ban small units outright, but the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) publishes housing standards that shape what gets built:

·Minimum housing standard: 25 m² (about 269 sq ft) for a single urban resident.
·Target (induced) urban standard: 40 m² for a comfortable single-person home.

Floor area in Japan is often quoted in the traditional tsubo: one tsubo is about 3.31 m² (roughly 35.6 sq ft), or two tatami mats. Individual rooms are still measured in tatami (jo), where one mat is around 1.62 m², though the exact size varies by region. Always check whether an advertised area includes balconies and the genkan entrance.

Source: MLIT Basic Plan for Housing (minimum and induced housing-area standards); tsubo and tatami are standard Japanese units of floor area.

Frequently Asked Questions

What is the average apartment size in Tokyo?

It depends on what you count. A typical single-person rental in Tokyo (a 1R or 1K) is about 25 m2, roughly 269 sq ft, which is also Japan's minimum housing standard for one urban resident. Across all dwellings, including owner-occupied houses and family condominiums, the average in Tokyo is about 64 m2, the smallest of any of Japan's 47 prefectures (2023 Housing and Land Survey, Statistics Bureau of Japan).

How big is a typical Tokyo apartment in square feet?

A 25 m2 single-person 1K is about 269 sq ft. A 1LDK (30-50 m2) is roughly 323-538 sq ft, a 2LDK (50-70 m2) is about 538-753 sq ft, and a family 3LDK (65-90 m2) is around 700-969 sq ft. The Tokyo average dwelling of 64 m2 is about 689 sq ft.

What does 1K, 1LDK or 2LDK mean?

Japanese layouts are coded as a number of rooms plus letters. The number is the count of bedrooms or main rooms. K is a kitchen, D is a dining area, and L is a living area. So 1K is one room plus a separate kitchen, 1DK adds a dining-kitchen, 1LDK adds a combined living-dining-kitchen, and 2LDK and 3LDK have two or three bedrooms around that living-dining-kitchen.

What is the minimum apartment size in Tokyo?

Japan has no hard legal minimum that bans smaller units, but the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) sets a minimum housing standard of 25 m2 of floor area for a single person living in a city, with a higher target (induced) standard of 40 m2 for a comfortable urban life. Many central Tokyo studios sit at or just below the 25 m2 minimum.

What is a tsubo and how does it convert to square metres?

The tsubo is the traditional Japanese unit of floor area, still used in property and construction. One tsubo equals about 3.31 m2 (around 35.6 sq ft), or two tatami mats. Room sizes are also given in tatami (jo): one tatami mat is roughly 1.62 m2, though the exact size varies by region.

Why are Tokyo apartments so small?

Tokyo combines some of the world's highest land values with a very large population packed into a geographically constrained area, so floor area is at a premium. Excellent public transport makes a compact home less of a burden, and Japanese design leans on efficient built-in storage and multi-use rooms. Advertised floor areas also include the genkan entrance and sometimes balconies, so usable living space is smaller than the headline number.

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Square Feet (ft²)

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About the author

Oliver Wakefield-Smith

Founder of Digital Signet, an independent research firm publishing data-led property, planning, and conversion tools. Content is sourced from ONS, Nationwide, RICS, MHCLG planning data, and UK building regulations. Confirm planning and regulatory figures with your local authority or a qualified professional.

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