Japanese Apartment Layouts Explained: What 1R, 1K, 1LDK, 2DK and 3LDK Really Mean

Last reviewed 28 Oct 2026 · 27 min read

A Japanese apartment layout is a short code that tells you how many rooms a home has and how big the kitchen area is. It says almost nothing about the square meters, and that gap is where most renters get surprised.

This guide is written for people who are about to rent, not for people curious about Japanese homes in general. It covers every code from 1R to 3LDK, the official rules behind the letters, what each layout costs in Tokyo right now, and which one fits which kind of household.

We rewrote it from the ground up. The first version of this post, published in August 2024, was a glossary. This one adds the rule book, current rent data and the layouts that English-language guides skip, starting with the 2DK.

One note before we start. Several official pages cited below are published in Japanese only. We've translated the figures and linked the source so you can check them yourself.

Japanese apartment layouts at a glance

What the number means	Count of separate rooms, not counting the kitchen area
What the letters mean	R = one room, K = kitchen, DK = dining kitchen, LDK = living, dining and kitchen
Smallest legal-label LDK	8 tatami (about 13 m²) with one room, 10 tatami (about 16 m²) with two or more
Tokyo 1K, Shibuya Ward	About ¥140,000 a month
Tokyo 1LDK, Shibuya Ward	About ¥240,000 a month
Best for	Renters who want to compare listings by more than the code
Not ideal for	Anyone hoping the code alone predicts floor area

Quick Answer: How to Read a Japanese Apartment Layout

Read the number first, then the letters, then ignore both until you've seen the square meters.

The number counts the separate rooms. The letters describe the shared space: K for kitchen, DK for a kitchen with a dining area, LDK for a kitchen, dining area and living area in one room. An R means there's just one room and the kitchen sits inside it.

A 1LDK, then, is one bedroom plus a combined living, dining and kitchen room. A 2DK is two bedrooms plus a dining kitchen, with no real living room. A 3LDK is three bedrooms plus a living-dining-kitchen room, the classic family unit.

Two details change how you should read those codes. First, the size of the kitchen space is set by an advertising rulebook, and it's a minimum rather than a promise. Second, an S in the code means a storage room that is not a legal bedroom.

The code tells you the structure. The floor plan tells you the home.

The Layout Code Decoded

Every code is built from the same five pieces, and once you know them you can read any listing.

Code	What it means	Kitchen or LDK size under the advertising rules
R	One room, kitchen inside it	No separate kitchen
K	Separate kitchen	Under 4.5 tatami
DK	Dining kitchen	4.5 tatami and up with one room, 6 and up with two or more
LDK	Living, dining and kitchen in one room	8 tatami and up with one room, 10 and up with two or more
S	Service or storage room	Not a bedroom, see the section on S rooms below

The K ceiling in that table comes from how Japanese portals explain the codes: a kitchen under 4.5 tatami is a K, between 4.5 and 8 tatami is a DK in a one-room home. The DK and LDK floors come from the advertising rulebook itself, which we cover next.

What the Letters Mean Under Japanese Advertising Rules

The letters aren't a style choice, they're a regulated label with minimum sizes behind them.

Real estate ads in Japan follow the Fair Competition Code for Real Estate Representations, known in Japanese as the 表示規約 (hyoji kiyaku). The Real Estate Fair Trade Council Federation publishes the code and its enforcement rules. Its guidance sets the smallest room that can carry each label: a DK needs at least 4.5 tatami in a one-bedroom home and 6 tatami in a home with two or more bedrooms, and an LDK needs at least 8 tatami and 10 tatami respectively. The Federation's enforcement rules and guidance (PDF, in Japanese) set out those figures.

Notice the word minimum. An 8-tatami LDK is the smallest room that can legally be called an LDK in a one-bedroom listing. It is not a typical LDK and it won't fit much.

We opened the 2019 version of that document, and the code has been amended since. Treat the figures as a reliable guide and confirm with your agent on any listing where the room size decides the deal.

Here's the arithmetic that follows from those minimums. One tatami in an advertisement counts as at least 1.62 m², so an 8-tatami LDK is at least 12.96 m² and a 10-tatami LDK is at least 16.2 m². Add a bedroom of 6 tatami (9.72 m²) and a one-bedroom home has roughly 22.7 m² in rooms before the entrance, bath, toilet and closets. That's our arithmetic, not a figure from any source, but it explains why genuine 1LDK homes rarely come in under the mid-20s.

The code protects you from a narrow kitchen being sold as a living room. It doesn't protect you from a small one.

Why Square Meters Beat Tatami Mats

Tatami counts are useful for comparing two rooms in the same listing and misleading for almost everything else.

The advertising rule says a tatami figure means the room's area, measured to the wall centers, divided by the number of mats comes to at least 1.62 m². So a 6-tatami room in an ad is at least 9.72 m² on paper. Measuring to wall centers includes half the thickness of the walls, which means the floor you can actually walk on is a little smaller.

Real tatami mats don't all match that number either. One English-language guide gives the Tokyo-style mat as 1.76 by 0.88 meters, which works out to about 1.55 m², smaller than the advertising minimum. In a tatami-floored room, then, counting the mats on the floor won't give you the figure on the listing.

So ask for square meters. Every agent can give you the exclusive floor area (専有面積, senyu menseki) of the whole home, and many listings show it in the headline.

If you want to see how those square meters translate into real Tokyo rents, our guide to how big Tokyo apartments are and what they cost by ward works through size and price ward by ward.

One number on a listing beats three letters every time.

1R: The Studio

A 1R is a single room with the kitchen inside it, and it's the cheapest way to live in a good location.

English-language guides put a 1R at roughly 12 to 20 m². The kitchen is usually a strip along one wall, and the toilet is often inside a molded unit bath rather than a separate room. Some come with a sleeping loft.

The Japanese guides we read agree on the downsides and add a few the English ones skip. Cooking smells reach your bedding because nothing divides the space. The front door can open straight onto the room where you sleep. Storage is thin.

What you get in exchange is rent. In Shibuya the average 1R in our October 2026 data is about ¥147,000 a month, and in Adachi it's about ¥76,000.

There's a quirk in that data worth knowing. In four of the five central wards we checked (Minato, Chiyoda, Chuo and Shibuya), the average 1R costs more than the average 1K. That's backwards from the textbook. We can't tell you why from the data alone, but the likeliest explanation is that new, compact, designer studios dominate the central 1R listings. Outside the center the textbook order holds.

A 1R suits a single person who's out most of the day. If you cook at home or work from your apartment, it'll wear on you.

1K: The Default

A 1K gives you one room plus a kitchen behind its own door, and it's the layout most single renters in Tokyo end up with.

The door is the whole point. It keeps cooking smells in the kitchen, and it makes the room easier to heat and cool, a benefit the Japanese guides mention often. English guides put a 1K at roughly 20 to 25 m².

The usual complaint is the kitchen itself. Japanese portal guides describe kitchens that are an afterthought, with little counter space, and some where a full-size fridge doesn't fit. The kitchen can also be hard to cool in summer because it's separated from the air conditioner in the room.

Rent is the lowest of the separate-kitchen layouts. The average 1K in our data runs about ¥140,000 in Shibuya, ¥110,000 in Setagaya and ¥86,000 in Adachi.

For one person who cooks a little and wants a door between dinner and bed, a 1K is hard to beat.

1DK: A Table in the Kitchen

A 1DK is a 1K with a bigger kitchen, big enough to hold a dining table.

Under the advertising rules the dining kitchen has to be at least 4.5 tatami in a one-bedroom home. That's about 7.3 m² at minimum, which is roughly a small table, a counter and a walkway. English guides put the whole home at roughly 25 to 30 m².

The Japanese guides stress two things. Rent can sit close to a 1K in older buildings, and the larger kitchen can be a better deal than it looks. They also warn that utility bills run higher because there's more space to heat.

Listings are thinner too. The 1DK is a less common layout than the 1K or 1LDK, so you'll have fewer to choose from and more competition for each.

Average rent runs about ¥172,000 in Shibuya, ¥146,000 in Setagaya and ¥99,500 in Adachi.

A 1DK is worth a look if you like having people over for dinner and don't need a separate sofa space.

1LDK: The Layout Most Couples Ask For

A 1LDK is one bedroom plus a combined living, dining and kitchen room, and it's the first layout that feels like a home rather than a room.

The bedroom door closes, so you can have a guest on the sofa or a partner working in the next room. It's also where the question of size gets slippery. The advertising rules only require the LDK to be at least 8 tatami, so a 1LDK can be a snug 25 m² or a generous 45 m².

English guides tell renters that an LDK often can't fit both a dining table and a sofa, and one reader comment on a popular guide says exactly that. It's a fair warning. An 8-tatami LDK is about 13 m² of floor measured to the wall centers, which is a kitchen, a table for two and not much else.

The Japanese guides add the cost side: rent is high for the layout and so is the cleaning and the electricity bill. The jump is real. In Shibuya a 1LDK averages about ¥240,000, which is 1.7 times the average 1K, and in Adachi it's about ¥127,000, or 1.5 times.

If you search by the term "1LDK meaning" you'll find plenty of definitions and few warnings about size. Check the LDK's tatami count and the total square meters, not only the code.

If you want to see what a one-bedroom actually costs across Tokyo, our cost guide to one-bedroom apartments in Tokyo breaks it down by area.

A 1LDK pays off when two people share it or one person works from home. For one person who's rarely in, it's a lot of rent for rooms you'll barely use.

2K and 2DK: The Layout English Guides Skip

A 2DK is two rooms plus a dining kitchen, and it's the layout where the Japanese and English-language guides disagree most.

Open the English guides that rank for this topic and you'll find 1R, 1K, 1DK and 1LDK covered well, then a jump to 2LDK. The 2DK barely appears. The Japanese guides treat it as a standard option and a frequent bargain.

Their reasoning is consistent. Most 2DKs are in older buildings, because new construction moved to the LDK format and 2DK listings have thinned out. Older stock rents for less. One Japanese explainer puts a typical 2DK at roughly 40 to 50 m², and says it can cost less than a 1LDK. The layout also suits roommates and couples, because the two rooms are often similar in size and the sliding doors between them can turn one into a living room.

The same guides list the drawbacks. Rooms that open directly onto the kitchen get cooking noise and smells. Some plans have a single balcony that only one room reaches, and in others you walk through one room to reach the other.

Rent data supports the bargain claim, with a caveat. The data we used for 2K and 2DK counts only buildings up to 20 years old, which excludes most older 2DKs and so probably overstates the price. Even so, an average 2K or 2DK in Edogawa is about ¥90,000, against about ¥151,000 for a 1LDK in the same ward. In Shibuya the two are almost level, at about ¥229,000 and ¥240,000.

The old-building point matters as much as the layout. Our guide on why building age matters more than size or layout in Japan explains what you're accepting when the rent drops.

A 2DK is a good fit for two people who want a room each and don't mind an older building. It's a poor fit if you want a quiet bedroom beside the kitchen or a modern bathroom.

2LDK: Room for a Home Office

A 2LDK adds a second room to a 1LDK, and for most couples working from home it's the layout that finally ends the argument over the desk.

The LDK minimum rises to 10 tatami for any home with two or more bedrooms, so the shared room is at least 16.2 m². That's an extra 3.2 m² over the 1LDK minimum, enough to matter when you're sharing a space.

The Japanese guides note a downside the English ones rarely do. A home with many rooms is harder to air-condition evenly and raises the electricity bill.

The price jump from 1LDK to 2LDK is steep. In Shibuya the average 2LDK is about ¥341,000, up about ¥101,000 a month from the 1LDK. In Adachi it's about ¥168,000, up about ¥41,000. In Minato it's about ¥417,000, up about ¥147,000.

A 2LDK suits a couple with an office, a small family with a baby, or two friends sharing who want a common room. It doesn't make sense for one person, however nice the second room sounds.

3LDK and Beyond: Family Layouts

A 3LDK is three rooms plus a living-dining-kitchen room, and it's the layout most Japanese families grew up in.

The Japanese guides describe the same drawbacks for the larger layouts: high rent, more cleaning and higher electricity use. One adds that a 3LDK can feel tight for a family of five or more, which tells you how tight the family-sized label can be.

Here's a benchmark for judging that. Japan's national housing plan sets a minimum floor area of 25 m² for one person, and 10 m² per person plus 10 m² for households of two or more, which comes to 30 m² for two, 40 m² for three and 50 m² for four. The same document lists an "urban" target of 40 m² for a young single person and 55 m² for a couple. You can read it in the Ministry of Land, Infrastructure, Transport and Tourism's housing plan document (PDF, in Japanese). The version we opened describes the plan as revised through 2016, so check the current plan for any decision that depends on it. It's a policy benchmark, not a rule that rentals must meet, and plenty of 1R and 1K homes sit below it.

The rent pattern for 3LDK is the most surprising in our data. In the central wards the 3LDK costs far more than the 2LDK, with Minato at about ¥590,000 against ¥417,000. In outer wards the gap nearly vanishes. In Nerima the average 3LDK is about ¥230,000 against ¥225,000 for a 2LDK, and in Edogawa the 3LDK is about ¥210,000, slightly under the 2LDK at about ¥214,500.

Treat that as a pointer, not a law. Small samples and building age can both bend an average. But if you're a family weighing a 2LDK, look at 3LDKs in the same ward before you decide, because the extra room may cost almost nothing.

A 3LDK suits a family with children, or a household that wants a guest room and two offices. For anyone who doesn't need three bedrooms, it's an expensive way to buy empty space.

What the S in 1SLDK and 2SLDK Really Means

An S in a layout code is a room that isn't a legal bedroom, however much it looks like one.

Under the advertising rules, a room whose window area doesn't meet the Building Standards Act's daylight requirement can't be advertised as a regular room. It has to be labeled a 納戸 (nando, a storeroom) or similar. In practice the listing shows it as S, for service room or storage room. The Act's requirement, as it's summarized in the Japanese glossaries we read, is that the window area be at least one-seventh of the room's floor area. We couldn't open the statute text itself, so confirm the ratio before you rely on it.

The English and Japanese guides frame this differently. English-language guides tend to describe an S as a free room you can use as an office or a guest room, and one calls it "storage, service or free room" with no standard size. The Japanese rule says something blunter: it's a room that failed the test for a bedroom.

Both are true, and here's how to use them. A 2SLDK is not a 3LDK. It's a 2LDK with a room that may lack a proper window, and you should ask to see it. The room can work well for storage, a desk or a hobby, as long as you know what you're renting.

Two questions to ask: does the S room have a window, and does it have its own air conditioning outlet? If the answer to both is no, price it as storage.

An S room is useful space priced as a bedroom if you don't ask, and a bargain if you do.

Reading a Floor Plan Drawing

The layout code is the headline, and the drawing underneath it is where the real home shows up.

Floor plans use a small set of marks that agents rarely explain. A number followed by a character, such as 洋6, means a Western-style room (洋室, yoshitsu) of 6 tatami. 和6 is a tatami-floored Japanese-style room (和室, washitsu) of the same size. CL is a closet, WIC a walk-in closet and SIC a shoe-in closet by the entrance, and UB is the unit bath. These abbreviations are common but drawings vary by agent, so ask when a mark isn't clear.

Look for five things on any plan. Where the front door opens, because a door onto the bed is the 1R problem all over again. Where the washing machine goes, which is sometimes on the balcony and sometimes inside the bathroom area. Which rooms have windows, because the plan shows them and the code doesn't. Whether the kitchen has room for a full-size fridge. And which way the balcony faces.

Tatami rooms deserve a note. English-language guides warn that tatami can't take heavy or frequently moved furniture, and that replacing a worn mat can cost from about ¥10,000 per mat for light wear and more for serious damage. Many younger Japanese renters now prefer non-tatami flooring, and a plan with a 和室 usually points to an older building.

Ask for the plan and the exact floor area before you ask for the viewing.

What Each Layout Costs in Tokyo

Rent climbs with every step up the ladder, but the steps aren't the same size in every ward.

The table below shows average monthly rent for listings in five wards in October 2026, from the most expensive central ward to one of the cheapest outer ones. Minato is the most expensive ward for every layout here except 3LDK, where Chiyoda is higher at about ¥600,000.

Layout	Minato	Shibuya	Setagaya	Nerima	Adachi
1R	¥164,000	¥147,000	¥92,000	¥75,000	¥76,000
1K	¥149,000	¥140,000	¥110,000	¥93,000	¥86,000
1DK	¥188,500	¥172,000	¥146,000	¥113,000	¥99,500
1LDK	¥270,000	¥240,000	¥185,000	¥144,000	¥127,000
2LDK	¥417,000	¥341,000	¥245,000	¥225,000	¥168,000
3LDK	¥590,000	¥400,000	¥310,000	¥230,000	¥193,000

Averages of Japanese rental market listings, October 2026, for buildings up to 20 years old, excluding management fees and parking. Treat these as market averages rather than fixed ceilings. The 2K and 2DK category is reported as one figure and is covered in its own section above.

Two patterns stand out. In these five wards a 1LDK costs between 1.5 and 1.8 times the 1K rent. The step from 2LDK to 3LDK is small in the outer wards and large in the center.

What a Layout Upgrade Costs Over a Year

Here's a worked example from the table. Moving from a 1K to a 1LDK in Shibuya takes you from about ¥140,000 to about ¥240,000, a difference of ¥100,000 a month, or ¥1,200,000 a year. In Adachi the same move goes from about ¥86,000 to about ¥127,000, a difference of ¥41,000 a month, or ¥492,000 a year.

That's the real price of the living room. It's worth paying if you'll use it daily, and it's a poor trade if the sofa will sit empty.

Move-In Costs Scale With Rent

Upfront costs in Japan are usually quoted as a number of months of rent, which means a bigger layout raises the cash you need on day one. The exact terms vary by landlord, so we won't quote typical figures here.

For illustration only, suppose a contract asked for a total of four months' rent up front. A ¥140,000 1K would then need ¥560,000, and a ¥240,000 1LDK would need ¥960,000. Ask your agent for the actual itemized figure before you apply, because the months differ by building.

Check the cash you need on day one before you fall for the second room.

Which Layout Fits Which Household

The right layout depends on who's living there and how they spend their day, not on how much you can stretch to afford.

One person who's rarely home does well in a 1R or 1K, and a person who cooks a lot should lean toward the 1K or 1DK. One person who works from home should look at a 1LDK or a 2DK, so the desk and the bed don't share a room.

A couple splits two ways. If you each want a door to close, a 2DK or 2LDK works, and if you're happy sharing a bedroom, a 1LDK is the usual choice. Roommates tend to land on 2DK or 2LDK because the two rooms are similar in size.

A family with one child fits a 2LDK. With two children or a guest room in the plan, start looking at 3LDK.

Pick the layout for the weekday, not the dinner party.

Layouts for Foreign Residents: What Changes

The layout doesn't change for a foreign renter, but the application can, and a bigger layout makes it harder.

Landlords and guarantor companies weigh the rent against your income. A ¥340,000 2LDK is a different application from a ¥140,000 1K, so the bigger the layout, the more paperwork and scrutiny you can expect. Most rentals also come unfurnished, which means a layout that looks roomy when empty fills up fast.

Two questions are worth asking early. Is the listing let to one occupant or two? Contracts name the people who will live there, so a 1K that's fine for one person may not be available for a couple. And does the building allow the use you have in mind, such as a home office or a pet?

If you've been turned down before, our guide to why a rental application gets rejected for foreign applicants explains what landlords look for and how to fix it.

When clients ask us which layout to apply for first, we often suggest the one that matches the income they can document today, then a move up later. We handle English-language viewings, and our team can tell you what the Japanese listing says that the translation might skip.

A layout you can document is worth more than a layout you can't.

Where Japanese and English Guides Disagree

Read enough guides in both languages and the same pattern shows up: each side answers a different question.

Japanese sources start from the kitchen and the building. They sort layouts by kitchen size, they talk about how old the stock is, and they count the electricity bill. English sources start from the room count and the floor area, and they spend their space on tatami and on what to do with a spare room. Neither is wrong. Each leaves out the half the other covers.

Topic	What Japanese sources stress	What English sources stress	What we'd do
2DK	A standard layout, often older and cheaper, with fewer listings	Barely mentioned	View one before ruling it out
S rooms	A room that failed the daylight test for a bedroom	A free room for an office or guest bed	Ask about the window, price it as storage
Tatami	Counted for comparison inside one listing	Converted to square meters, with caveats on mat sizes	Ask for square meters
Running costs	Larger layouts cost more to cool and heat	Rarely raised	Ask about air conditioning in every room
LDK size	A minimum label, 8 or 10 tatami	A reader complaint that a table and sofa won't both fit	Measure it against your furniture

We didn't read any single forum thread as a source for a figure, and none of the numbers above come from one. The comments we quote are reader comments under an English-language guide, which is what residents say rather than a verified fact.

Where the two sides disagree, the useful answer usually sits in the middle of the table, not in either column.

Pros and Cons of Choosing by Layout Code

The code system is the best shared vocabulary Japanese rental has, and it still leaves out the one number you need.

Used well, the code lets you filter thousands of listings in seconds. Used alone, it lets an 8-tatami LDK and a 20-tatami LDK carry the same label, lets an S room inflate the room count, and lets a 2DK and a 1LDK be the same size and the same price.

The Japanese and English sources agree on the benefits and part ways on the risks. Japanese guides spend their effort on building age, noise and electricity bills. English guides spend theirs on sizes and tatami. You need both.

Use the code to search, and use the plan to decide.

1K vs 1DK vs 1LDK vs 2LDK: Which One to Choose

The four layouts below cover most of what a single renter or a couple will actually view, and the table shows what separates them.

Layout	Shared-room minimum	Shibuya Rent	Adachi Rent	Character	Best For
1K	Kitchen under 4.5 tatami	¥140,000	¥86,000	Compact, door between kitchen and bed	One person, light cooking
1DK	4.5 tatami and up	¥172,000	¥99,500	Room for a small table	One person who hosts
1LDK	8 tatami and up	¥240,000	¥127,000	Separate living and sleeping	Couples, remote workers
2DK	6 tatami and up	¥229,000*	No separate data	Two rooms, older buildings	Roommates, budget couples
2LDK	10 tatami and up	¥341,000	¥168,000	Extra room for an office	Couples with a desk, small families

Averages of Japanese rental market listings, October 2026. The 2DK figure is for the combined 2K and 2DK category in buildings up to 20 years old, so treat it as indicative only.

Where the evidence leans, we'll say so. For one person, the 1K is the better value in almost every ward we checked. For two people, the 2DK is the layout most renters overlook and the one most worth viewing, provided you accept an older building. The 1LDK is the safe choice and often the most expensive per square meter.

View a 2DK even if you've set your heart on a 1LDK.

Who Should Look Elsewhere

This guide has limits, and some readers will get more from a different one.

It covers apartments. If you're thinking about a detached house, a traditional machiya or a house you plan to buy, the codes still apply but the price, size and condition questions are different. Short-term visitors don't need any of this, because a hotel or a serviced apartment skips the layout question altogether.

Our rent figures also come from newer buildings. If you're set on an older unit, which is where most 2DKs live, expect lower rents than the table shows and check the building's age and condition closely.

A layout guide can't tell you whether a particular building is a good one.

Practical Advice from E-Housing

Seven habits will save you the most trouble, and none of them takes long.

• Ask for the exact square meters of the whole home, not only the tatami count of the LDK.
• Ask whether any S room has a window and its own air conditioning outlet.
• Look at the drawing for where the front door, washing machine and fridge go.
• Check the building's age, because it often explains a low rent better than the layout does.
• Compare a 2DK and a 1LDK in the same ward before you choose.
• Work out the day-one cash for each layout, not just the monthly rent.
• Ask whether the listing is for one occupant or two.

We rewrote the old version of this guide because the questions we hear from clients are rarely about the letters. They're about how big the place really is, and whether the second room is a bedroom. We can pull the floor area and the plan for every listing and tell you what the Japanese description says.

The best layout is the one you can pay for and use every day.

Final Verdict: Which Japanese Apartment Layout Should You Choose?

For most renters in Tokyo, the right layout is a 1K if you live alone and a 1LDK or a 2DK if you live with someone, and the answer to every other question is square meters.

The code tells you the structure and the advertising rulebook gives you the minimums, but only the floor area and the plan tell you whether a home works. The 2DK is the best bargain English-language guides don't mention. The S room is the biggest trap. And the step from 1K to 1LDK adds 50 to 80 percent to the rent in the five wards we compared.

At E-Housing, we work with foreigners, expat families, international students and working professionals across greater Tokyo every day. We can search by the layout and the floor area you need, shortlist the listings that fit, and walk you through the Japanese plan before you commit. If you'd like a second opinion on a layout you're considering, get in touch and tell us the listing.

A layout is a starting point, and the home is what you can see on the floor plan.

FAQ: Japanese Apartment Layouts

What does LDK stand for in a Japanese apartment?

LDK stands for living, dining and kitchen. It means those three functions share one room, and it must be at least 8 tatami in a one-bedroom home and 10 tatami in a home with two or more bedrooms.

What does 1LDK mean in Japan?

A 1LDK is one separate bedroom plus a combined living, dining and kitchen room. It's the first layout that gives you a living room as a distinct space.

What is the difference between 1K and 1LDK?

A 1K has one room and a small separate kitchen, while a 1LDK has a bedroom plus a living-dining-kitchen room of at least 8 tatami. In our October 2026 data for five wards, a 1LDK costs about 1.5 to 1.8 times the rent of a 1K in the same ward.

What is the difference between 1DK and 1LDK?

A 1DK has a dining kitchen of at least 4.5 tatami, while a 1LDK has a living-dining-kitchen room of at least 8 tatami. The 1LDK has space for a sofa and the 1DK usually doesn't.

Is a 1R the same as a studio apartment?

Yes, a 1R is the Japanese equivalent of a studio, with one room and the kitchen inside it. English-language guides put it at roughly 12 to 20 m².

Is a 2DK bigger than a 1LDK?

Not necessarily. One Japanese explainer puts a typical 2DK at roughly 40 to 50 m², which is often as large as a 1LDK, but the layouts split the space differently. Check the square meters on each listing.

Why is a 2DK often cheaper than a 1LDK?

Most 2DKs are in older buildings, and older buildings rent for less. In our data an average 2K or 2DK in Edogawa is about ¥90,000 against about ¥151,000 for a 1LDK, though that comparison covers newer buildings only.

What does the S in 1SLDK stand for?

S stands for service room or storage room. It's a room that doesn't meet the daylight requirement to be a legal bedroom, so ask whether it has a window before you count it as one.

What does 2LDK mean?

A 2LDK is two separate rooms plus a living-dining-kitchen room of at least 10 tatami. It's the usual layout for a couple with a home office or a small family.

How many square meters is a 6 tatami room?

At least 9.72 m² on a listing, because the advertising rule counts one tatami as at least 1.62 m². Real tatami mats can be smaller, so ask for the room's area in square meters.

What is a good apartment size for one person in Tokyo?

It depends on how you live, but Japan's national housing plan sets a minimum of 25 m² for one person and an urban target of 40 m² for a young single person. Many 1R and 1K units sit below the minimum.

Which layout is best for a couple in Tokyo?

A 1LDK is the usual choice and a 2DK or 2LDK works if you each want a room. Compare a 2DK and a 1LDK in the same ward before you decide.

Can two people live in a 1K in Japan?

That's set by your contract and the landlord. Contracts name the occupants, so ask whether the listing is let to one person or two before you apply.

Do Japanese apartments come with a living room?

Only layouts with an L in the code, such as 1LDK, 2LDK and 3LDK. A 1K, 1DK or 2DK has a kitchen or dining kitchen but no dedicated living room.