jun igarashi builds the house of density

‘house of density’ by jun igarashi architects, hokkaido, japan
image © sergio pirrone
all images courtesy of jun igarashi architects

due to the density in japan’s urban areas, architects are compelled to make comfortable, livable spaces in very tight lots. this is no exception for the ‘house of density’ designed by japanese architect jun igarashi, whose site only allows for spaces measuring three tatami mats wide. containing 32 individual rooms of varying dimensions, the home is organized around a central spiral staircase that reveals small niches each with their own unique connection to the exterior. the small footprint balances interior and exterior program, allowing the inhabitants to enjoy the outdoors in a private and public setting during the summer as well as the indoors. a galvanized corrugated metal skin is wrapped around the structure, a durable material that ensures the first layer of insulation that keeps the house at a comfortable temperature during the winter. the division of spaces also allows each room to be quickly and efficiently heated.

bird’s eye view
image © sergio pirrone

small semi-private exterior courtyard
image © sergio pirrone

dining area
image © sergio pirrone

image © sergio pirrone

kitchen and dining area
image © sergio pirrone

living area
image © sergio pirrone

small room from the spiral stairs
image © sergio pirrone

image © sergio pirrone

bedroom
image © sergio pirrone

image © sergio pirrone

image © sergio pirrone

office area
image © sergio pirrone

image © sergio pirrone

image © sergio pirrone

image © sergio pirrone

image © sergio pirrone

project info:

location: sapporo, hokkaido
principal use: private residence
design period: 2011–2012
construction period: 2012-2013
architects: jun igarashi architects
structural engineer: daisuke hasegawa & partners
site area: 79.64m2
building area: 37.92m2
total floor area: 88.50m2
number of stories: 3 above ground
structure: timber frame
construction firm: akasaka kenchiku