takeshi hosaka architects: daylight house
takeshi hosaka architects: daylight house takeshi hosaka architects: daylight house
sep 26, 2011

takeshi hosaka architects: daylight house

‘daylight house’ by takeshi hosaka architects in yokohama, japan all images courtesy takeshi hosaka architects image © koji fujii / nacasa&partners inc.

kanagawa-based practice takeshi hosaka architects has sent us images of ‘daylight house’, a two-storey private dwelling for a family of four in yokohama, japan. focusing on the natural illumination of the interior space as the core element of the design, the house utilizes 29 skylights and a system of curved acrylic panels to fill the rooms with daylight.

exterior view image © koji fujii / nacasa&partners inc.

surrounded by a mix of building typologies ranging from 10-storey condominiums to office buildings, the residence stands on a foundation that is sunken in a storey below the street level. a small set of outdoor staircase reaches a slim garden in the front, creating a private entrance for the inhabitants. wrapped in a skin of metallic panels, the structure acquires an unassuming street facade with no apertures lending views of the domestic space within.

street view image © koji fujii / nacasa&partners inc.

outdoor staircase and entrance images © koji fujii / nacasa&partners inc.

open to a height of two-storeys, the presence of the ceiling is central in the communal space of the house. a grid measuring approximately 1500mm x 1600 mm serves as the basic armature with sheets of curved acrylic resting in between. artificial white light set at equidistance of the skylights exaggerate the illumination from above and are dispersed by the translucent panels. to achieve the ideal effect, a number of mock-ups experimenting with the size of the structure, colour of the acrylic and the finish of the interior panels were developed. the interstitial air space between the acrylic surface and the roof acts as a climate-controlling buffer zone: hot air heated by the sun is ejected during the summer, while in the winter, the layer ensures a stable microclimate.

interior view image © koji fujii / nacasa&partners inc.

bedrooms and private studies are compartmentalized in rooms with an open top. featuring large foldable doors, the spaces can be fully incorporated into the main livingspace or closed off for privacy. a loft level partially sits on top of the children’s bedroom and serves as a neutral platform for multiple functions.

from the living space image © koji fujii / nacasa&partners inc.

kitchen image © koji fujii / nacasa&partners inc.

doors closed image © koji fujii / nacasa&partners inc.

doors open image © koji fujii / nacasa&partners inc.

images © koji fujii / nacasa&partners inc.

ceiling structure image © koji fujii / nacasa&partners inc.

skylight image © koji fujii / nacasa&partners inc.

views of children’s room images © koji fujii / nacasa&partners inc.

from study image © koji fujii / nacasa&partners inc.

views from the loft level images © koji fujii / nacasa&partners inc.

image © koji fujii / nacasa&partners inc.

images © koji fujii / nacasa&partners inc.

plants integrated into the layout image © koji fujii / nacasa&partners inc.

in use image © koji fujii / nacasa&partners inc.

interior conditions at night image © koji fujii / nacasa&partners inc.

image © koji fujii / nacasa&partners inc.

from the loft level at night image © koji fujii / nacasa&partners inc.

roof image © koji fujii / nacasa&partners inc.

site map

floor plan / level -1

floor plan / level 0


east elevation

west elevation

south elevation

north elevation

project info:

site: 114.92 m2 building area: 73.60 m2 floor area: 85.04 m2 building height: 5388 mm storeys: 2 structure: wooden

  • I wouldn’t necessarily have the parents’ bedroom so close to the kids’, but it’s a great use of space. I also love the integration of the plant.

    Maryline says:
  • I hate everything except the ceiling treatment which is A+ excellent, its the best feature and really transforms the space, giving the illusion of much more airy space which isnt actually there. Great work.

    charles says:
  • All that light seems so clinical, unvaried, relentless — Elvis Costello’s “shadowless heart” (literally). Interesting, though.

    Tom P says:
  • This is a beautiful space, perhaps better served as an art gallery or office. I don’t think the family members would have much privacy. This looks to be a very intense living environment.

    Joy says:
  • It would make a great baking center: no shadows, sterile walls, and no windows burglars could use.

    Maybe japanese cities are built in a way where you’re actually glad if you don’t ever look outside a window, so if you want your privacy you have to build a bunker.

    Alec says:
  • doesn’t look like home

    hala says:
  • Creative and Innovative!

    burak says:
  • Really like it!! different and functional…

    Leeya says:
  • yet another piece of boring ubiquitous sterile impersonal japanese architecture! cue ubiquitous overhead electrical lines, cue high density low-rise living, cue lack of vegetation zzzzzzzzzzzzzzzzz

    snore says:
  • plants in the middle of the way? not so well integrated
    nice but very claustrophobic

    juju says:
  • There’s no question designboom is one of the best architecture & design sites out there; but not sure what “designboom original content” really means, or if its necessary to even claim. This project was posted on Contemporist on Sept 22, 4 days earlier – so what makes it “original” to designboom? The good work makes the rounds to the main design blogs anyway…

    whatsoriginal says:
  • with the yellow stripe we wish to draw attention to the fact that – either we produce the content ourselves
    (most often the images are photos taken by designboom or articles are based on researches and are documentations not based on press releases) or that architect studios send us info
    much in advance and specified as ‘exclusive preview’.
    honestly we did not know about the contemporist feature, and yes, it’s a great site.

    birgit/designboom says:

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