SATOSHI OKADA
ARCHITECTS

VILLA A/k main

VILLA A/k

VILLA A/k is a two storeyed weekend house, located on a southside inclination along a mountain ridge, commanding a splendid view of valleys down to Karuizawa.

Automobiles approach from the northside into the garage, directly linked to the main entrance. Both are hidden beneath the ridge surface; from the dim space, a glazed short bridge leads to the entirely transparent living space exposed on the sloping terrain.

Inspired by a bird’s wing extended to shelter chicks in the nest, the upper floor, built of steel structure, is covered by a single roof gently curved down to the ground. The two-dimensional curvature is resulted from the three phased modelling process as follows: first the plate is two dimensionally bent, then imposed 1/5 gradient for complying with the local regulation and cut out proportionally onto the lower structure. The thin roof, merely 15cm thick overall, is comprised of prefabricated corten steel panel units by the watertight welding, a shipbuilding technology.

The lower level is built of reinforced concrete structure, half buried underground, serves for the private areas of bedrooms, bathroom, laundry, workshop and a tatami room. The planimetric spindle shape derives from the terrain's contour lines to ensure the stability of the retaining wall against the mountain. The interior space was finished by a white painted ceiling, a dark grey plastered wall, a bright timber flooring and furnished with delicately crafted wooden fittings.

LOCATION
Karuizawa, Nagano JP
PROGRAM
Private residence
YEAR
2010
SIZE
484 sqm
STRUCTURE
RC + steel
LEAD ARCHITECT
Satoshi Okada
TEAM
Isao Kato, Lisa Tomiyama, Masataka Yonemoto
COLLABORATORS
STRUCTURAL DESIGN:
Hirokazu Toki + Hojo structural laboratory
LANDSCAPE DESIGN:
Paul Smither, OnBeat Co.
CONTRACTOR:
Sasazawa Construction Co.
PHOTO CREDITS:
Hiroshi Ueda
AWARDS
International Property Awards: 2012 - 2013 Best Architecture of Asia Pacific, UK
PUBLICATIONS
INTERNATIONAL:
HKIA Journal 64, Interior World Magazine 86, C3 vol 335, The Plan, Interni 62, Construir Contemporaneas, Hauser 2/2012, Interni vol. 619, Konsept Projelet vol. 80, d+a 065,Case in Giappone
JAPAN:
X - Knowledge 2/2016, Modern Living 204, Nikkei Business Publication, I'm Home nn. 52, 57 and 58, Shinkenchiku jt 2/2012, GA Houses 123

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