I didn't ask about the chairs, you could ask the architect and perhaps she can ask the homeowner for you:

http://www.houzz.com/pro/info310/burobois

The chairs are designed by Friso Kramer they are named Revolt and produced by Ahrend in the Netherlands. www.ahrend.com

They are a reproduction, so you can sometimes find the original ones in a vintage shop. for example at www.pamono.com