Siller & Co.


Siller & Co is an engineering company specialized in building envelop design and technology.  The company provides joint interdisciplinary service in all aspects of facade design, technology and energy efficiency.

The company was founded in 1986 by Mr. Karl Otto Siller, who is a gifted tool designer and mechanical engineer in Stuttgart, Germany.  

"How to bring your idea from concept to reality. Design is like beginning a sentence before you know its ending. The risks are obvious: you may never get to the end of the sentence at all – or having gotten there, you may not have said anything. Uncertainty is the essential, inevitable and all-pervasive companion to your desire to make design. And tolerance for uncertainty is the prerequisite to succeeding. It takes courage to stop”

Thorsten Karl Siller

He took over the company as 2nd generation in 2002. 

With the new office setup in Shanghai, the company becomes part of a network organization of groups of architects, engineers and project developers.