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Unfolding a Small Cane-Like Umbrella: House and Studio O

o.heje architecture

written by
Lee Haedeun, Choi Jaepil
photographed by
Hwang Wooseop (unless otherwise indicated)
materials provided by
o.heje architecture
edited by
Bang Yukyung
background

SPACE January 2026 (No. 698) 

 

 

 

The Toughness of a Century Etched into the House

This house was built a hundred years ago. Brick walls were raised, a timber floor structure was assembled, and concrete was poured on top to form the slab; this process of stacking walls and forming floors was repeated to complete three levels, then finished with a timber roof. In this way, the house – built along with the history of Ogin-dong – emerged. Until the client couple, who operated mooyongso – a studio and whiskey bar in Seochon – discovered the building, it had changed hands many times over the past hundred years. Some cut columns and added walls; others poured additional concrete on the floor to install heating. As these tough, improvised interventions accumulated, the floors tilted, the ceilings sagged, and the roof shifted slightly. To support these now-unstable three floors, it became necessary to introduce a long cane-like structural member that would pierce through the building. On top of that, a small canopy – an umbrella-like form – was added to secure thermal performance.

 

 

 

 

 

 

 

Intrusions of External Sensation

The house leans against the rocky escarpment of the city. A long, 12m-by-6m horizontal volume is wedged directly into a retaining wall. As a result, the exposed rock face enters the interiors of the first and second floors, while the third-floor courtyard is enclosed by stone walls taller than the house itself. The village alleyway reaches deep into the third floor, and the natural formation intrudes into the first and second floors. Because elements that should rightfully belong outside have penetrated the interior, the house disrupts and collapses our sensory apprehension of what typically distinguishes interior from exterior.

The stone path on the third floor that enters the courtyard continues from the village alleyway and extends to the inner terrace. At it...

 
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Architect

o.heje architecture (Lee Haedeun, Choi Jaepil)

Design team

Kim Donggyeong, Lee Jiyoung

Location

Ogin-dong, Jongno-gu, Seoul, Korea

Programme

single house, neighbourhood living facility

Site area

86.3m©÷

Building area

80.43m©÷

Gross floor area

197.97m©÷

Building scope

3F

Height

12m

Building to land ratio

93.1%

Floor area ratio

229.3%

Structure

masonry (brick), timber structure, steel frame

Exterior finishing

collective steel parts

Interior finishing

water paint, wooden flooring, tile

Structural engineer

Eun structural engineering

Construction

Yigak Construction Co., Ltd.

Design period

May 2024 – Feb. 2025

Construction period

Mar. – Sep. 2025

Client

mooyongso


Lee Haedeun, Choi Jaepil
Lee Haedeun and Choi Jaepil graduated from Dankook University, Department of Architecture, and practiced at Samuso Hyojadong architects and associates. They also completed the research and Master¡¯s course at Inui Kumiko lab and Tom Heneghan lab from Tokyo University of the Arts, Faculty of Fine Arts, Department of Architecture. In 2016, they established o.heje architecture, during their Master¡¯s degree, and have been working in Seoul since 2017. Major awards include the Shinkenchiku International Residential Competition 2007 2nd Prize, the Tokyo University of the Arts Yoshida Isoya Award, the Tokyo Architecture Collection Yokomizo Makoto Award, and the SD Review 2017 Prize—House M, etc.

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