Office Building, Rudolfplatz

Cologne, Germany 2015–2022

Client: Momeni SEG Competition, first prize

This commission was won in an invited competition organised by the city of Cologne. The new office building for the Hamburg-based developer Momeni SEG will provide 13,000 square metres of offices and retail over eight floors. The site is a major part of a master plan to redevelop a whole city block at Rudolfplatz, an important square around the Hahnentorburg on the west side of central Cologne.

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Images 1
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Images 8

Model photographs

Model 1
Model 2
Model 3
Model 4
Model 5


Drawings 1

Ground floor plan

Drawings 2

Level 1–4 plan

Drawings 3

Level 5–6 plan

Drawings 4

Level 7 plan

Drawings 5


Drawings 6


Drawings 7

North elevation

Drawings 8

East and West elevation

Drawings 9

South elevation

Competition entry

Competition 1
Competition 2
Competition 3
Competition 4


Cologne, Germany


Momeni SEG

Construction cost

19,671 m²

Caruso St John Architects
Adam Caruso, Peter St John

Project architect
Stephanie Webs

Project team
Peter Karl Becher (competition), Josephine Eigner, Christoph Kuhr, Paula Schilliger, Fabienne Sommer (competition), Ben Speltz, Barbara Thuler

Structural engineer
IDK Kleinjohann GmbH & Co. KG

Services engineer
ITG Hans Pitz GmbH & Co. KG

Project manager
BMP Baumanagement GmbH

Cost Consultant
BAL Bauplanungs und Steuerungs GmbH

Building physics
Müller BBM GmbH

Fire consultant
HHP West

Façade engineer
DS Plan

Graphic design
John Morgan Studio

Adrian Koenig, Nora Walter

Model photographs
Christoph Kuhr

Filip Dujardin