What 3LDK Means: Reading Rooms and Floor Area on an Akiya Listing

A buyer wrote to us asking for a 3LDK of about 100 sqm. It is a fair brief, and a good place to start. But on an akiya (an empty home in Japan) the room label and the floor area say less than they seem to. This guide explains how to read them, what Engawa shows, and what to ask.

What the letters mean

A Japanese layout is a number followed by letters.

• The number counts the rooms apart from the shared space. In 3LDK it is three.
• L is living room, D is dining room, K is kitchen. LDK means a shared living, dining and kitchen space. DK means a dining kitchen without a separate living area. K is a kitchen alone.
• S sometimes follows the number. It marks a service room, a space too small or too dark to be counted as a bedroom, often used for storage.

So 3LDK is three rooms plus a living, dining and kitchen space. It does not mean three bedrooms with certainty, and it does not tell you how big any of them are. Real estate advertising in Japan follows industry rules about when a space may be called LDK rather than DK, and those rules depend on size. The Real Estate Fair Trade Council, the industry body that sets them, is the place for the exact wording; for a given house, ask the agent how the label was applied.

What a room label tells you, and what it does not

It tells you roughly how the house is divided. It does not tell you:

• the size of any room;
• whether the rooms are beds, tatami rooms or storage;
• the condition of the rooms or the house;
• how many floors the house has, or where the rooms sit.

Room sizes on older listings are often given in tatami mats (jo) rather than sqm. A mat is roughly 1.6 sqm, but the actual size differs from region to region, so treat conversions as a guide. For land you may also see tsubo, about 3.3 sqm. When a listing gives both, trust the sqm.

What Engawa shows

Of our 8,258 live homes (as of October 2026), the source listing has a room label for 5,889. We show 4,407 of them as a layout. The rest hold other text, such as a note that a plan is attached, so we show no layout for those. Where a home has no layout, the page says: "Where a detail is not shown, the source listing did not state it."

The most common layouts are the larger family houses an old rural home tends to be:

• 5DK, 493 homes
• 4DK, 425
• 6DK, 412
• 5LDK, 279
• 4LDK, 266

206 homes say 3LDK. Many akiya are bigger than a city flat, so 3LDK is not the norm. We hold no room count where the listing does not state one, and nothing reads the floor-plan image for you.

There is no Explore filter for rooms or layout. Search by size instead, or by whether a plan exists, then read the page.

Floor area

Floor area is the more useful number. On Engawa the page shows it as "Building size" in sqm. We hold it for 6,847 homes, and the middle one is 124 sqm. Here is how asking prices sit against building size:

Medians are the middle asking price of homes that state a price. They show how the market sits, not what any one house costs or what it is worth.

Back to the buyer's brief: about 1,100 homes have 90 to 110 sqm of floor space, and 50 of those are listed as 3LDK. You can see the first group on Explore. If you only want homes with a plan, add the plan filter: homes with a floor plan shows 2,729.

Floor area has its own limits. It does not say whether the figure counts all floors or the ground floor only, whether it includes outbuildings, or how it was measured. Old listings are sometimes rounded or copied from older records. Ask the agent which figure is meant.

Land is a different number

"Building size" and "Land size" are two rows on a page. A house of 100 sqm can sit on 150 sqm of land or 5,000. For land, see akiya with land.

Two examples

A listing that states everything: a home in Yaita, Tochigi. Its Specifications list land of 483 sqm, building of 104 sqm, built in 1993, wood, Rooms 3LDK, with gas, water and sewer, then a floor plan.

A listing that states the plan but no layout: a home in Hakui, Ishikawa. It has a building size of 99.17 sqm and two floors. The source gave a note pointing to a plan image instead of a layout, so there is no Rooms row. The floor plan is on the page.

Questions to ask the agent

1. How many of the rooms are bedrooms, and are any of them tatami rooms with no door or cupboard? Ask for the plan.
2. Is the size the building as a whole, or just one floor?
3. Is there anything extra, such as an outbuilding or a barn, that is not in the size?
4. Has the layout been changed since the plan was drawn?
5. What state is the house in? That is for a qualified surveyor. Our guide to old earthquake rules and akiya condition explains who checks, and why year built matters.

If the style of house matters to you, akiya, kominka and machiya shows how old farmhouses and town houses differ in how their rooms run. If you plan to use the house only part of the year, questions to ask about a holiday home covers what else to ask.

Frequently asked questions

Does 3LDK mean three bedrooms?

Not for certain. It means three rooms plus a living, dining and kitchen space. Ask the agent to say what each room is.

Is 100 sqm a large akiya?

On Engawa, the middle building size is 124 sqm, so 100 sqm is under it.

Can I search Engawa for 3LDK?

No, there is no filter for rooms or layout. You can search by building size and by whether a floor plan exists.

Why do some homes have a plan but no layout?

Some listings only carry a plan image. We do not read the image.

Ready to ask?

If a home looks right on paper, open it and use "Enquire about this house", and ask what the rooms are and what the size covers. A founder replies by email, and it is free to ask. If an estate agent handles the sale, you can also ask Koryoya, our listed agent, to help in English: your enquiry reaches us first, and reaches Koryoya only after you confirm your email and we forward it.