naf architect & design: ZYX house
original content
mar 12, 2012
naf architect & design: ZYX house

‘ZYX house’ by naf architect & design in tokyo, japan
all images courtesy naf architect & design

japanese atelier naf architect & design (tetsuya nakazono, akio nakasa) has shared with us images of
‘ZYX house’, a multi-storey private dwelling in central tokyo, japan. conceived for a single woman
who required a home that could accommodate for her visiting family and extended relatives,
the design stacks three kinds of volumes on top of the other to create a dense and efficient organization
of space.

from above

located in a tightly established commercial district near a railway station, the design had to make
the most of the 40 m2 plot as well as the adjacent structures which block in the site. the four-storey residence
climbs vertically to secure views as well as natural daylight for the interior, resulting in a single-sloping
roofline that cuts the space above at a dramatic angle. finished with a subtle chevron pattern achieved by
changes in texture, the white exterior achieves a clean and distinct identity within the aging neighbourhood.

interior view – second level

exploring all available dimensions and directions, the design achieves a variety of interior conditions for
each level. the ground floor, which faces a narrow but busy street, is oriented vertically to gain indirect light
from a slim L-shaped void. accommodating a private bath and bedroom, the design supplies a private
living space for the client’s grandmother.

the second level, which looks onto a neighbouring house with no windows, opens up to the south and
the north, flanking the interior with floor-to-ceiling windows on both sides. the simple layout features
a kitchen on one side and a living area on the other, obtaining separation by placing the staircase in between.

view from living room

the top floor looks out to the east and west with a triangular window securing views of the immediate site
from above. with a maximum level of privacy, the space is ideal for individual living. by approaching
each level to suit certain conditions and inhabitants, the overall design is a spatial network for
a multi-generational family.

triangular window on third level

loft level above

private bathroom on ground floor

night view

schematic diagram

floor plan / level 0
(1) entry
(2) room 1
(3) bathroom 1

floor plan / level +1
(4) living / dining room
(5) kitchen

floor plan / level +2
(6) room 2
(7) walk-in closet

floor plan / level +3
(8) bathroom 2

cross sections
(1) entry
(2) room 1
(3) bathroom 1
(4) living / dining room
(5) kitchen
(6) room 2
(7) walk-in closet
(8) bathroom 2

longitudinal sections
(1) entry
(2) room 1
(3) bathroom 1
(4) living / dining room
(5) kitchen
(6) room 2
(7) walk-in closet
(8) bathroom 2


project info:

site area: 38.63 m2
building area:
26.80 m2
total floor area:
90.06 m2
maximum height:
12.300 m
maximum eave height:
12.300 m
reinforced concrete construction

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naf architect and design (4 articles)

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