'pentagonal house' by kazuya morita architecture studio in tsushima city, japan
all images courtesy kazuya morita architecture studio
photographer: shinichi watanabe


'pentagonal house', also known as 't-house', is a private dwelling by kyoto-based practice
kazuya morita architecture studio in tsushima city, a calm village near nagoya, japan.
true to its name, the single-storey structure has a plan in the shape of a distorted pentagon.
treating the roof form as a secondary landscape within the site, the project divides
the dwelling into radially spreading spaces.

the clients were a young couple who wished to build a separate house in the same lot
as an old japanese style house where their parents reside. the pentagonal geometry
was derived from the shape of the site, allowing for maximum built area while still
providing adequate garden space around its perimeter.



japanese style room


the interior features five main structural walls set outwards from the center.
a dome-shaped cut out from this epicenter defines the minimal circulation of the house,
providing views and access into every room. a dining table in the shape of the roof plan
is set here. each of the five faces of the house is dedicated to one space,
illuminating the room with a generous span of glazing.



(left) center point / dining area
(right) entrance


despite the unconventional shape of the plan, the house utilizes simple and traditional
wooden construction methods; the structural walls feature round corners done in
japanese white plaster.



living space



looking into the living space and bedroom



(left) view from the entrace
(right) shelving detail



(left) bedroom
(right) washroom



exterior at night



aerial view



diagram



model



site



site plan



(above) section
(bottom left) west elevation
(bottom right) south elevation


project info:

program: private housing
structure: wood
site area: 692.63 m2
built area: 87.73 m2
structure engineer: mitsuda structural consultants
construction: hatanokoumuten co. ltd.