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Drawer Balcony House: A Street-Facing Garden in the Air by Naf Architect & Design

Naf Architect & Design’s Drawer Balcony House uses a 12 m² projecting balcony as garden, entrance porch and car shelter on a 99 m² Setagaya site. See how its split levels, atrium, adjustable glass openings and crafted material transitions shape the home.

By ThatPainter Team 18 October 2026
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Drawer Balcony House is a completed 2022 residence in Setagaya City, Japan, designed by Naf Architect & Design. Its defining move is a 12 m² balcony that projects toward the road, shelters the owner’s car, and doubles as the entrance porch. The architects treat that elevated outdoor room as the house’s garden, social space and primary architectural identity.

The project fits 106 m² of floor area onto a 99 m² site with only 6 m of street frontage. Instead of trying to disguise the restrictions of a compact urban lot, the design uses the balcony, split-level circulation, an atrium and carefully controlled openings to make a small house feel connected to sky, street and family life.

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Project facts at a glance

ArchDaily’s project page, published June 22, 2024, lists Drawer Balcony House as a 2022 residence in Setagaya City. The project listing on World-Architects identifies the same work by Naf Architect & Design.

Item Documented detail
Project Drawer Balcony House
Location Setagaya City, Japan
Project year 2022
Total floor area 106 m²
Site area 99 m²
Street frontage 6 m
Balcony About 12 m², also described as 6.5 tatami mats
First-floor area 57 m²
Living-room ceiling at the far end 3.1 m
Balcony side-wall height at the tip 1.1 m

The named team includes principal architect Akio Nakasa; architects Teppei Amano and Takumi Hara; facility designers Hikari Asano and Takumi Ikeda; structural work by EQSD and Yosuke Misaki; and photographer Toshiyuki Yano. IOC and KMEW are listed as manufacturers.

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These figures describe this one house. They are not averages for Japanese homes and do not establish measured energy, daylight or ventilation performance.

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Why the balcony is the project’s main idea

Local regulatory conditions made the outlines of nearby detached houses broadly similar, according to the architects. On a small lot surrounded by comparable buildings, the balcony provided the most flexible place to give the house a distinct character. It projects toward the front road rather than sitting as a leftover strip at the back.

The architects describe the move directly: “The balcony protrudes toward the front road, creating a garden-like space in the air.” The phrase is practical as well as poetic. The approximately 12 m² platform is large enough for outdoor dining, pots of plants, an evening drink or a chair for reading on a sunny day. It is not merely a narrow circulation balcony.

The owner’s car fits underneath the projection. That makes the balcony a roof for parking while preserving the upper level as usable outdoor space. The exterior stair reaches the balcony, and the same elevated platform works as the entrance porch. Arrival, parking and outdoor living are therefore organized around one architectural element instead of three separate additions.

A balcony that performs several jobs

  • Outdoor room: space for meals, plants, sitting and reading.
  • Entrance: the exterior stair leads directly to the porch-like balcony.
  • Weather cover: the projection shelters the car below.
  • Identity: the forward-facing volume differentiates the house within a regulated streetscape.

For a compact urban home, combining these roles can reduce the need for separate garden, porch and carport structures. It also means that the balcony has to be designed as architecture, not treated as an afterthought: its edge, stairs, drainage, planting and relationship to neighbors all affect how it works every day.

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Privacy and outlook across the street

Across the road is a low-rise nursing home with trimmed trees. The architects say the balcony’s side walls descend toward the projecting tip, where they are 1.1 m high. That change in height preserves a view toward the plants and sky while keeping more enclosure nearer the house.

This is a measured adjustment rather than an all-or-nothing choice between an exposed terrace and a sealed room. Higher side walls can protect the approach and seating area; the lower end opens the view. Because the opposite property is low-rise and landscaped, the outlook is directed toward greenery and sky instead of a blank neighboring wall.

The nursing home had recently been built when the owner selected the site, so the balcony’s relationship to that view was part of the site decision. The project does not claim that the arrangement guarantees privacy in every direction. Sightlines will still depend on standing position, furniture, planting and activity across the street.

How the interior route unfolds

The first-floor sequence descends from the entrance porch through the hall and dining room toward the living room. The architects give the first-floor area as 57 m², with the living-room ceiling reaching 3.1 m at the far end. The change in level and height creates a gradual transition from arrival to the principal shared space.

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Descending from arrival to living space

  1. Reach the porch: approach by the exterior stair to the balcony, which also serves as the entrance.
  2. Pass through the hall: the route moves downward rather than opening immediately into the living room.
  3. Cross the dining area: the dining room acts as an intermediate family space along the descent.
  4. Arrive at the living room: the far end has the documented 3.1 m ceiling height.

This sequence gives the compact plan a sense of depth. It also makes the balcony part of the interior story: the house does not jump from street to a single flat room, but leads occupants through a series of levels and shared zones.

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Open stair, storage and family connection

An open staircase with bookshelves and storage links the first and second floors. Rather than hiding circulation in a closed stairwell, the design turns it into usable wall space and a visual connection between levels. Split levels keep the four family members aware of one another without requiring every activity to happen in the same room.

Second-floor private rooms include interior glass windows that can be opened or closed. These openings allow the rooms to participate in the family space when connection is wanted and to be visually separated when privacy or concentration is needed. The description presents the windows as adjustable elements, not permanently open partitions.

Daylight, atrium and air movement

The upper floor receives sunlight over a neighboring roof, while softer light is described as reaching the first floor through the atrium. The architects also say that opening a window allows air to pass from the first floor to the second. Together, the atrium and openings create a vertical environmental route through the house.

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To make the space visually more open, visible pillars supporting the second floor were removed and the structure was supported by steel-framed stairs. This is a structural and spatial decision: the stair carries part of the visual and physical work that conventional columns would otherwise announce in the middle of the rooms.

The project description records design intentions and observed spatial conditions, not instrumented results. It provides no measured daylight levels, air-change rates, energy-use figures or thermal-comfort study. The atrium and operable windows should therefore be understood as a strategy the architects describe, not as proof of a specific performance outcome.

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Material palette and the craft of transitions

Inside, the palette combines tile, wood, cement, paint and linoleum across floors, walls and ceilings. The owner took an active role in selecting materials. The stated aim was an overall unified impression while allowing details to vary from surface to surface.

That approach matters in a small house because a limited number of rooms means each finish is seen repeatedly and in changing light. Tile may establish a durable, tactile zone; wood can bring warmth to circulation or living areas; cement and paint can provide quieter fields; and linoleum can add a resilient floor surface. The project does not publish a room-by-room finish schedule, so those material roles should not be read as a specification for a particular room.

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Exterior cladding and handmade corners

The exterior walls use textured cement-based cladding. The extended or “drawn out” portions use another material, creating a distinction between the main wall planes and the projecting parts that define the balcony and other drawn-out forms.

At the transitions, the architects and site craftsmen made handmade metal-sheet corner parts instead of relying on factory-made pieces. These corners are small components with a large visual effect: they resolve where different claddings meet and make the change in material appear intentional. For painters and finishers, such junctions are a reminder that surface quality depends on edges, trims and interfaces as much as on the broad field of a wall.

No brand, product model, paint color code or coating system is specified in the project description. The documented fact is the material family and the handmade treatment of the corners, not a retail recipe.

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Using the balcony as a real garden room

The architects’ own question is simple: how do you use a balcony? Their examples provide a useful operating brief for a space of this size.

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Outdoor dining

A table and chairs can turn the balcony into an extension of the dining room. Because the platform is also the entrance porch, furniture placement should preserve a clear route from the exterior stair to the door. The car below does not remove the need to think about runoff, dripping umbrellas and dirt at the threshold.

Plants and pots

Pots of plants are explicitly part of the intended use. Grouping containers near the lower side-wall section can reinforce the view toward the nursing home’s trees without blocking the approach. Planters should be selected by category and load requirements for the actual balcony; the project does not identify a preferred planter, size or supplier.

An evening drink or a reading chair

The balcony can support short, informal occupations as well as meals: an evening drink in the breeze or a chair in the sun for reading. Those uses benefit from movable furniture because the same area must remain an entrance and circulation zone. Shade, wind and rain will vary by season and orientation; the project description does not provide a seasonal comfort assessment.

What this house demonstrates for compact-home design

  • Make one strong move do several jobs. The projecting balcony is garden, porch, car shelter and visual signature at once.
  • Use section, not only plan. The descending first-floor route, split levels and 3.1 m living-room height give a 106 m² house more spatial sequence.
  • Adjust privacy gradually. Side walls that descend toward the tip preserve an outlook while retaining enclosure closer to the house.
  • Keep family rooms connected but controllable. Open stairs, storage and operable interior glass windows allow visual connection to vary.
  • Treat junctions as design. Handmade metal corners make transitions between textured cladding and the extended portions deliberate.
  • Separate intention from proof. The atrium and windows are described environmental strategies, but the project publishes no measured performance data.

Reading the project in context

Drawer Balcony House is best understood as a response to a very specific Japanese urban condition: a 99 m² lot, only 6 m wide, among neighboring detached houses whose basic outlines were shaped by local regulations. Its lessons are transferable as design questions rather than as a universal formula.

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On another site, a forward balcony may face a taller building, a busier road or stronger prevailing winds. The same 12 m² area could require different screening, drainage, structure and planting. Likewise, an atrium that brings light downward may perform differently depending on roof heights and window orientation. The project’s value lies in showing how balcony, section, circulation and finish can be coordinated when the site leaves little room for separate elements.

Bottom line

Drawer Balcony House turns a constrained frontage into its principal asset. A balcony projecting toward the road becomes an elevated garden, entrance porch and car shelter; descending levels and an open stair connect the family interior; and restrained material changes, finished with handmade metal corners, give the compact residence a crafted identity. The architects describe a clear daylight and airflow concept, while the published project information stops short of measured environmental results. That combination of bold sectional planning and careful surface detailing is the house’s most useful lesson.

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