Lex building

General Secretariat


Rue de la Loi/Wetstraat 145
B-1048 Bruxelles/Brussel

Since 2007, the Lex building has been home to the translation service of the General Secretariat of the Council, responsible for translating documents into all the official languages of the European Union. This building regrouped the language units which had been scattered throughout different buildings in Brussels, and hosts the new units added with the enlargement of the EU.

In figures

Gross surface area: 82 583 m2

  • 2 conference rooms and 5 multipurpose rooms
  • 14 floors of offices

The building was designed by M. Jaspers and J. Eyers, from Leuven (Belgium).


The building is integrated into its surroundings, following the curved front of the Berlaymont building, home to the European Commission.

It contains offices, meeting rooms, a restaurant, parking space and storage rooms and archives.

Sustainable development and environmental management

The building uses the latest technologies to guarantee protection of the environment, sustainable development, energy saving and comfort for its users. Some examples:

  • rain water is collected, saving a significant volume of city water
  • intelligent lighting reduces energy consumption, automatically turning off if there are no occupants in the room or if there is enough natural light
  • the main external walls are made of active double skin glass, with high performance glazing, making it possible to contain temperature changes and ensure excellent natural lighting
  • distribution of heating and cooling at low temperatures limits losses in the distribution process and allows for the use of very economic sources of energy
  • a 600 KW cogeneration makes it possible to generate electricity and recover almost all of the heat from cooling