naoi architecture & design office: doughnut house
naoi architecture & design office: doughnut house naoi architecture & design office: doughnut house
aug 10, 2011

naoi architecture & design office: doughnut house

‘doughnut house’ by naoi architecture & design office in ibaraki prefecture, japan all images courtesy naoi architecture & design office image © hiroshi ueda

tokyo-based practice naoi architecture & design office has shared with us images of ‘doughnut house’, a single-storey private residence for a couple in rural ibaraki prefecture. situated on a plot surrounded by fields and other low-lying structures, the design seeks to create a living space that is open with ambiguous borders and boundaries.

exterior view image © hiroshi ueda

manipulating the privacy of the site, the design starts by building greenery and embankments around the plot. the resulting boundary of the property is loose and open, maintaining the house’s privacy in a semi-porous and natural manner. taking advantage of this feature, the architecture allows the interior to open up to the exterior, blurring the line between living space and the surrounding environment. the south elevation is distinguished by a large section of floor-to-ceiling glazing which can open the communal programs to the yard outside.

(left) street view (right) view of open living room images © hiroshi ueda

the flat nature o the site allowed for a functional layout, which centres around a small interior courtyard and deck. an intuitive circulation route is set in a circuit-like fashion with every program flowing from one to the other. the slanted roof form rises to the central courtyard, establishing the spatial gravity of the house. exposed roof columns in untreated wood lends a natural atmosphere to the white-washed interior.   

view of living and dining from yard image © hiroshi ueda

interior view image © hiroshi ueda

(left) view from kitchen (right) view of circulation space images © hiroshi ueda

view of living room from bedroom image © hiroshi ueda

bedroom image © hiroshi ueda

(left) entrance (right) interior view of entryway images © hiroshi ueda

entry at night image © hiroshi ueda

image © hiroshi ueda

from yard at night image © hiroshi ueda

night street view image © hiroshi ueda

image © hiroshi ueda

schematic diagram

sectional diagram

floor plan / level 0

roof plan

project info:

principal program: private house structure: wooden building area: 114.56 m2 total floor area: 133.27 m2

structural engineer: inoue structural engineers landscape design: naoi architecture & design office.

  • What’s a roft?

    aaa says:
  • Roft is Japanese for Loft!

    LOL! says:
  • very interesting!

    mm says:
  • very nice house ! with a big black fence ?

    FJR says:
  • exquisite, especially the big black fence

    dbkii says:
  • Something about the entire presentation, from the location to the materials to the furniture feels off- too small, too careless, too fast & too suburban. An imitation of “modern” without the required elements. Regardless of how much it costs, dare I say it, it looks cheap.

    snottycaligal says:
  • I think the beautiful simplicity of the plan and roof shapes is somewhat spoiled by the twisted effect of the paving and screens seen on plan. What is the reason for this?
    Overall, a pleasant design and surely a delight for the owner

    wwwillem says:

have something to add? share your thoughts in our comments section below.
all comments are reviewed for the purposes of moderation before publishing.

comments policy
designboom's comment policy guidelines
generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
the correction is at the discretion of the post editor and may not happen immediately.

what if you disagree with what we or another commenter has to say?
let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

- please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
- please don't personally insult the writers or your fellow commenters.
- please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
- please don't include your website or e-mail address in your comments for the purpose of self-promotion.
- please respect jury verdicts and do not discuss offensively on the competition results
(there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
the best 100-200 entries too.)

a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.


a diverse digital database that acts as a valuable guide in gaining insight and information about a product directly from the manufacturer, and serves as a rich reference point in developing a project or scheme.

architecture news

keep up with our daily and weekly stories
492,670 subscribers
- see sample
- see sample