ThePlus Architects builds narrow office block for a South Korean book publisher

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An office for a book publisher is housed within this faceted white building, designed by South Korean studio ThePlus Architects for a six-metre-wide site in Seoul (+ slideshow).

Horn by ThEPluS Archhitects

The client, who works as both a writer and a publisher, wanted to create a private workspace for himself, but also a place where he could host small lectures, seminars and other events.

Horn by ThEPluS Archhitects

Seoul-based ThePlus Architects was tasked with accommodating all of these activities within a heavily restricted site in Seogyo-dong, measuring six metres across and 10 metres deep, and flanked by taller buildings on three sides.

Horn by ThEPluS Archhitects

The team responded by planning a white-rendered concrete volume that takes up a large portion of the site. But several sections of the volume appear to have been cut away, creating recesses and a sloping roof.

Horn by ThEPluS Archhitects

"Even though this building is small, I wanted for it to be seen gallantly in the midst of the high-density buildings around," said architect and studio director Hanjun Cho.

Horn by ThEPluS Archhitects
Photograph by Youngchae Park

"Even if it seems somewhat expressionless, I wanted this building to compose strong expression," he added. "Even if it looks rather simple, I wanted for it to seem refined."

Horn by ThEPluS Archhitects

Named Horn, the 133-square-metre building contains three floors above ground and one basement level, and each floor is used for a different activity by the occupant, Galmuri Publishing.



The ground floor accommodates a reception area, but a slightly raised space towards the rear provides the seminar room. The lecture space occupies the basement, the first floor houses the publishing office, and the level above contains a library and meeting area.

Horn by ThEPluS Archhitects
Photograph by Youngchae Park

In contrast with the building's stark white exterior, concrete surfaces are left exposed throughout the interior. There is also a rough concrete staircase connecting all the floors.

Horn by ThEPluS Archhitects

A wooden bookshelf slots underneath the staircase at one point, making the most of the leftover space, and glass screens have been installed around to create sound exclusion without comprising the level of daylight.

Horn by ThEPluS Archhitects

"Although the site is very small and building is very small, the process has had a significant weight and difficulty as good as any large building," said the architect.

Horn by ThEPluS Archhitects

The sloping roof creates a double-height space along one side of the uppermost floor, allowing room for extra bookshelves and a mezzanine floor. A wood and steel staircase leads up to the mezzanine, and provides access to a screened roof terrace.

Horn by ThEPluS Archhitects
Photograph by Youngchae Park

Seoul is well known for containing numerous narrow buildings, although in most instances these are houses. Other new office buildings in the city include a concrete workspace for a photographer and a tapered block for a cosmetics company.

Photography is by Ryoo In Keun, unless stated otherwise.


Project credits:

Architect: ThePlus Architects
Architect in charge: Hanjun Cho
Mechanical engineer: Hanbaek engineering
Structural engineer: Yongwoo engineering
Construction: Moowon Construction
Interior styling: Hausstyle

Horn by ThEPluS Archhitects
Building diagram – click for larger image
Horn by ThEPluS Archhitects
Massing process diagram – click for larger image
Horn by ThEPluS Archhitects
Site plan – click for larger image
Horn by ThEPluS Archhitects
Floor plans – click for larger image
Horn by ThEPluS Archhitects
Section – click for larger image
  • Gdavies

    Wow. This is special. Love the impact it has on the street. Bold and makes great use of limited space. Lessons can be learnt here.

  • Stunning exterior and facade design.