Architects Group RAUM Stacks Offset White Volumes into a Compact Office Tower in Busan

Haeundae was not always Busan's engine of aspiration. The site of AWESOME185 once sat in a remote, undervalued patch of the city, the kind of leftover parcel that planners politely ignore. But as Centum City expanded and the mythology of waterfront Busan intensified, this corner lot at the junction of two roads became a gateway, and Architects Group RAUM seized the opportunity to build something that reads less like a small office block and more like a compact manifesto on how to occupy a constrained urban lot with clarity.

What makes AWESOME185 worth studying is the way it resolves a classic Korean urban problem: the right-to-sunlight regulation that governs residential-adjacent construction. Rather than treat the setback rules as a burden, RAUM turned them into architecture. Each floor plate shifts, steps back, or cantilevers beyond the one below it, producing a stacked composition of offset white volumes. The result is a building whose profile changes from every angle, and whose terraces and double-height voids are direct products of regulatory negotiation rather than stylistic whim.

Reading the Corner

The building sits on an angled footprint where two roads converge, and RAUM exploits this geometry to give AWESOME185 a distinctive triangulated presence on the street. At dusk the offset floor plates become legible as individual glowing boxes, their full-height glazing revealing illuminated interiors. The corner condition is never resolved into a single facade plane; instead, each level presents a slightly different face, producing a slow rotation of mass as the eye moves upward.

From the street, horizontal railings on projecting balconies break up the white stucco surfaces and offer a human scale reference. Two figures standing on the upper railings in one image give the game away: this is a building designed to be inhabited at its edges, not just behind its glass.

Sunlight as Design Driver

South Korean building codes enforce sunlight access for neighboring residential properties with a specificity that most Western architects would find astonishing. RAUM used these constraints to sculpt the massing, stepping the upper floors back to allow light to reach adjacent buildings. The side elevation reveals the logic clearly: a metal-screened stairwell tower anchors one end while cantilevered volumes reach out from the other, creating a dynamic composition that is fundamentally the shape of a regulation drawn in three dimensions.

The white stucco finish unifies the shifting volumes, but recessed balconies carve shadows into the surface that change throughout the day. The building is, in effect, a sundial of its own constraints.

The Interior Courtyard

At the heart of the building, a double-height courtyard opens up to frame a single tree with autumn foliage. Floor-to-ceiling glazing wraps the void, pulling light deep into the plan and offering workers a visual anchor that changes with the seasons. It is a small gesture in terms of square meters, but it transforms the interior experience from a series of stacked floors into an interconnected vertical space.

The exterior terraces extend this logic outward, placing planted trees at the building's edges. The metal railings and white stucco backdrop turn these terraces into miniature gardens suspended above the street, blurring the line between workspace and open air. In a 524-square-meter building, finding room for both a courtyard and generous terraces is not obvious. It suggests a priority structure that values spatial quality over maximized leasable area.

Urban Context and Scale

The aerial views are revealing. AWESOME185 sits among low industrial sheds and surface parking, a white vertical punctuation mark in a horizontal landscape. Mountains rise in the distance behind Centum City's towers, placing the building in a middle ground between Busan's natural topography and its commercial ambitions. The rooftop terrace, visible from above, reads as a fifth facade, with garden plantings that soften the building's geometry when seen from the residential towers nearby.

This is a building that understands its transitional role. It is neither a tower nor a shed, but something calibrated to a moment in a neighborhood's evolution, when a formerly peripheral site finds itself suddenly at a gateway.

Plans and Drawings

The site plan confirms the angled footprint wedged between two converging roads, a geometry that propagates upward through every floor. The ground level accommodates a hall, restaurant, and restrooms around a central stair, while upper floors progress from open workspaces with cantilevered side rooms to meeting rooms arranged along the angled spine. The roof plan shows the garden terrace and stair access, completing the vertical sequence.

The four elevations tell four different stories. The front shows the stacked-box logic most clearly, stepping upward from ground level. The right elevation reveals the terraced composition with its mix of textured and solid surfaces. The back elevation exposes the vertical circulation tower as an autonomous element, and the left elevation presents the most horizontal reading, with recessed and projecting forms playing against each other. The cross section is the most informative drawing of the set, revealing split levels, numbered zones, and the way the central stair stitches together floors that are never quite aligned.

Why This Project Matters

AWESOME185 is a case study in turning regulatory constraints into architectural language. The right-to-sunlight laws that shape so much Korean urban construction are often treated as obstacles to be minimized. RAUM instead internalized them as the project's primary compositional tool, producing a building whose silhouette, terraces, and interior voids are all direct expressions of the code. The result is architecture that is legible as both an act of compliance and an act of design, without the two being in conflict.

At 524 square meters, the project also demonstrates that a small commercial building can carry civic weight. Its white volumes catch light, its terraces green the streetscape, and its courtyard tree brings seasonal change into the workplace. In a neighborhood still defining itself between industrial past and commercial future, AWESOME185 proposes that even a modest office block can set the tone for what comes next.

AWESOME185 Office Building by Architects Group RAUM, Haeundae, Busan, South Korea. 524 m², completed 2021. Structural engineering by IN Structure. Construction by Dodam Construction. Photography by Yoon Joon-hwan.

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