in kawachinagano, a city in japan’s osaka prefecture, architecture studio SPACESPACE has completed a timber dwelling that adjoins a generously proportioned garden. located in a residential neighborhood at the foot of a small mountain range, the design team sought to design a dwelling that maximized the client’s time with their family. named ‘mushroom house’, the two-storey residence has a Y-shaped floor plan, which has been configured in response to external views and sightlines.

SPACESPACE mushroom house
all images courtesy of SPACESPACE



SPACESPACE positioned the dwelling’s primary living accommodation — including the kitchen and dining area — at ground level. meanwhile, a tatami room overlooks a secluded garden. a staircase leads to the home’s upper level, which contains the sleeping quarters. residents are able to exit the property by descending a ladder that provides access to the roof of the tatami room below. from here, a set of stone stairs, which can be used as a quiet place for relaxation and contemplation, leads back to the garden.

SPACESPACE mushroom house
the house is located in kawachinagano, a city in japan’s osaka prefecture



a fruit tree, and other herbs within the external space, provides the family with fresh produce that can be used in the adjacent kitchen. the house has been constructed using timber, with wood visible throughout the home’s interior. externally, the building is clad with a dark grey stucco that lends the building a distinct character. other projects by SPACESPACE include a collective housing project and a renovated dwelling with a prominent outdoor living area.

SPACESPACE mushroom house
the timber dwelling adjoins a generously proportioned garden

SPACESPACE mushroom house
a set of stone stairs can be used as a quiet place for relaxation and contemplation

SPACESPACE mushroom house
the two-storey residence has a Y-shaped floor plan

SPACESPACE mushroom house
wood is visible throughout the home’s interior

SPACESPACE mushroom house
the layout has been configured in response to external views and sightlines

SPACESPACE mushroom house
the upper level contains the home’s sleeping quarters

SPACESPACE mushroom house
residents are able to exit the property by descending a ladder

SPACESPACE mushroom house
the house has been constructed using timber

SPACESPACE mushroom house
‘mushroom house’ gently illuminated at night



project info:


location: kawachinagano city,osaka, japan
principal use: residence
structure: wood / 2 stories
area: site: 110.75 sqm / floor: 71.33 sqm
completed: june, 2017

    have something to add? share your thoughts in our comments section below.

    comments policy
    LOG IN
    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.

    (6 articles)


    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