Madori: decoding 1K, 3LDK and Japanese floor plans
The heart of a Japanese listing is the madori (madori (plan), layout / room distribution). It reads like a code: a number followed by letters.
- The number = the count of bedrooms/main rooms (excluding kitchen and living space).
- The letters describe the shared areas: L = living, D = dining, K = kitchen, S = service room (a room without a regulation window, often a study or storage, called nando, 納戸).
So a 1K = one room + a separate kitchen (the typical student studio). A 3LDK = three bedrooms + an open living-dining-kitchen: the most sought-after family format.
Note: the kitchen size changes the letter. Below a certain area, it is noted K; above, DK then LDK. A 2DK is therefore more modest than a 2LDK. This parameter is central when you compare listings against our checklist.
Table: floor-plan codes (madori) decoded
Glossary of the most frequent layout notations, from studio to family home.
| Notation | Meaning | Profile |
|---|---|---|
| 1R (one room) | Single room, integrated kitchen | Compact studio |
| 1K | 1 room + separate (small) kitchen | Student / single |
| 1DK | 1 room + kitchen-dining nook | Single, more space |
| 1LDK | 1 bedroom + living-dining-kitchen | Couple, young household |
| 2LDK | 2 bedrooms + living-dining-kitchen | Couple or small family |
| 3LDK | 3 bedrooms + living-dining-kitchen | Family (most in demand) |
| 4LDK+S | 4 bedrooms + living + service room | Large family, house |
To estimate the rental yield of a given madori, enter your assumptions in our yield simulator.
Area: heibei (m²) and tsubo, the units trap
Area is read two ways in a Japanese listing.
- Heibei (m², square metre): the standard unit, written m² or ㎡. The private living area (senyū menseki, sen'yū menseki, exclusive area) of an apartment is expressed this way.
- Tsubo (tsubo, traditional unit): 1 tsubo ≈ 3.3 m² (the size of two tatami mats). Often used for land and price per tsubo.
The classic trap: comparing a price "per tsubo" with a price "per m²". Remember the conversion: 1 tsubo ≈ 3.3 m², so a price per tsubo divided by 3.3 gives the price per m².
Area in tatami mats (jō)
Rooms are often described in jō (tatami, tatami count): one tatami ≈ 1.6 m². A "6 jō" room is therefore about 9.7 m². This is the most intuitive way to picture a Japanese room.
Always check whether the stated area is the private (net) area or the gross floor area — a point detailed in our Japan property-buying checklist.
Chikunen, toho and zoning: age, access, rights
Three items determine a property's value and buildability.
Chikunen: the build year
The chikunen (chikunen, build year) or chiku + number of years indicates the building's age. It is crucial for seismic resistance: properties built to the post-1981 new standard are far safer, as our article on the 1981 seismic standard (shin-taishin) explains. A "chikunen 1975" should raise a flag.
Toho: walking minutes to the station
The toho (walk , on foot) gives the distance to the station in minutes, on a regulatory basis of 80 metres per minute. "Toho 5" = 5 minutes' walk, i.e. ≈ 400 m. The lower this figure, the stronger the rental value.
Kenpeiritsu and yōsekiritsu: zoning
- Kenpeiritsu (kenpeiritsu (emprise au sol), building coverage ratio): the maximum share of the plot the building may cover (e.g. 60%).
- Yōsekiritsu (yōsekiritsu (COS), floor area ratio / FAR): the total permitted floor area as a % of the plot (e.g. 200%).
These ratios matter most if you buy to rebuild, a key point when you want to buy land in Japan.
Table: common listing terms
Glossary of the terms that recur most often on SUUMO, HOME'S and at home.
| Term (romaji, kanji) | Meaning | To check |
|---|---|---|
| chikunen (chikunen) | Build year | Seismic standard (before/after 1981) |
| toho (walk ) | Walking minutes to station (80 m/min) | Real distance, slope |
| senyū menseki (sen'yū menseki) | Private area | Net vs gross |
| kanrihi (kanri-hi) | Condo management fees | Monthly amount |
| shūzen tsumitatekin (shūzen tsumitatekin) | Repair reserve fund | Adequacy of the reserve |
| minami muki (south-facing) | South-facing | Real sunlight |
| shoyūken / shakuchiken | Freehold / leasehold | Land included or leased |
The "fees + reserve fund" line is often underestimated: see our article on property tax in Japan for the full recurring budget.
Fees, orientation and traps to avoid
Beyond the price, a listing hides costs and nuances you should not miss.
Monthly fees (condo)
- Kanrihi (kanri-hi, management fees): upkeep of common areas, concierge, lift.
- Shūzen tsumitatekin (shūzen tsumitatekin, repair reserve fund): a provision for the building's future renovation. Too small a reserve signals future special levies.
Orientation
The minami muki (south-facing, south-facing) is highly valued in Japan for sunlight. You will also see higashi muki (東向き, east), nishi muki (西向き, west), kita muki (北向き, north).
Common mistakes to avoid
- Comparing only the purchase price without adding kanrihi + reserve fund.
- Taking a toho at face value: 80 m/min is theoretical, ignoring slopes and traffic lights.
- Ignoring the chikunen: a pre-1981 property may need costly seismic reinforcement.
- Confusing freehold with leasehold (shakuchiken), where the land is not yours.
All these checks appear in the jūyō jikō setsumei, the legal disclosure to demand before signing.
In short: a Japanese listing holds no secrets
Reading a Japanese property listing comes down to mastering a handful of codes: the madori (3LDK, 1K…) for layout, heibei and tsubo for area, chikunen for age and seismic safety, toho for access, and the fees + reserve-fund pair for the real budget. Add zoning (kenpeiritsu/yōsekiritsu) if you target a rebuild.
With this glossary, SUUMO, HOME'S and at home become readable. To go further, browse our complete guide to buying in Japan, compare already-decoded picks, and get supported from selection to key handover with our personalised support.
Frequently asked questions
What does 3LDK mean in a Japanese listing?
3LDK means 3 bedrooms (the number) plus an open Living + Dining + Kitchen area. It is the most sought-after family format. A 1K, by contrast, is a studio: one room plus a small separate kitchen.
How do you convert tsubo to square metres?
1 tsubo (tsubo) equals about 3.3 m² (the size of two tatami mats). To turn a price per tsubo into a price per m², divide by 3.3. Japanese land and prices are often quoted per tsubo, while an apartment's area is read in heibei (m², m²).
What does "toho 10" mean in a listing?
Toho (walk ) means "on foot": "toho 10" = 10 minutes' walk to the station, calculated on a regulatory basis of 80 metres per minute, i.e. about 800 m. It is theoretical: slopes, lights and detours can lengthen the real trip.
What are kanrihi and shūzen tsumitatekin?
Kanrihi (kanri-hi) is the monthly condo management fee (common areas, lift). Shūzen tsumitatekin (shūzen tsumitatekin) is the reserve fund for the building's major future works. Too small a reserve signals future special levies: check it before buying.
Why does the build year (chikunen) matter so much?
Because it determines the building's seismic standard. Properties built after 1981 follow the new standard (shin-taishin), far more earthquake-resistant. An older property may need costly reinforcement, so the chikunen is a first-rank safety and value criterion.
Official sources
Take the next step
Browse immoJapon's hand-picked properties — machiya, kominka and income properties, analysed (photos, zoning, licence, local market) — or tell us about your project.