Deutscher Bundestag Luisenblock Ost, Berlin (DE)

Luisenblock Ost is located in the development area “Hauptstadt Berlin – Parlaments- und Regierungsviertel” and in the extension of the so-called “Band des Bundes”. After years of planning without results, Luisenblock Ost (LBO) is now to be reorganised. To this end, the neighbourhood has been divided into two areas, LBO I and LBO II. The 15,500 m² triangular LBO I area is bordered by Luisenstrasse to the west, the city railway to the north, Schiffbauerdamm to the south and two listed existing buildings to the east. The Luisenblock Ost continues the “Band des Bundes” and creates a gentle transition to the listed industrial buildings.

Complex spatial program
We divided the complex space program into two buildings in a convincing design: Offices for the Bundestag with meeting rooms, catering facilities, magazines, logistics areas with delivery zones and a computer centre. The buildings fulfil special requirements for sustainable, climate-neutral and resource-efficient construction. They are planned according to the low-tech principle, with robust, low-maintenance and simple structural solutions.

A lively square
A new public square with a restaurant in front of the historic boiler house forms the centrepiece of the design. The connecting plinth of the new buildings matches the existing “Band des Bundes” in terms of materials and lines. The buildings made of wood and Berlin recycled bricks blend harmoniously into the existing ensemble.

A striking head-end building
The striking head-end building on the banks of the Spree is clearly recognisable as a parliamentary and administrative building. Upon entering, the view opens up into the round, green inner courtyard, which brings daylight into the entrance area. The stacked conference rooms facing the inner courtyard adjoin the foyer. The office spaces are arranged in a ribbon on the outer façades. A representative, wooden spiral staircase extends across all floors within the foyer. The core of the timber hybrid – the inner courtyard, circular air spaces and large halls – is a solid construction, while the surrounding office strip is designed in timber.

A compact timber building
An office wing closes off the block to the city railway line in the north. We countered the high construction costs with a very economically designed, compact timber construction. The façade made of recycled bricks takes up the materiality of the historic brownstone industrial buildings and combines the existing and new buildings into an ensemble.

A resource-saving construction method
The recyclable building consists of simple structures that can be separated and dismantled, making it possible to replace and reuse components. The office blocks are designed as timber structures, with basement floors and cores in reinforced concrete with recycled content. We use recycled bricks from Berlin for the brick façades. The timber construction consists of recurring, similar, prefabricated elements. The reinforced concrete parts – constructed as prefabricated parts wherever possible – can be dismantled and reused. The efficient floor plan design and the compact building structure enable a sustainable, efficient ratio of usable floor space to floor area. This minimises the amount of sealed surfaces despite the space requirements.

Client: Bundesrepublik Deutschland, Bundesamt für Bauwesen und Raumordnung
Location: D-10117 Berlin, Luisenstraße 31
Architecture: Dietrich Untertrifaller
Competition: 2024
Area: ca. 66,000 m²
Program: Offices for the Bundestag with meeting rooms, restaurants, storage facilities, logistics areas with delivery zones, a central postal goods X-ray centre and a computer centre
Visualisierungen: Dietrich Untertrifaller

Partners
Statics: Merz Kley Partner, Dornbirn / building services: HL-Technik Engineering / façade: KUB Fassadentechnik / light: Kardoff, / fire protection: Kersken + Kirchner / Llandscape: Ramboll Studio Dreiseitl