Co-founder, director 2003-2008: In 2003, Jens Casper, Petra Petersson and Andrew Strickland, formed Realarchitektur. Their most important collaborative project, Boros Collection Residence, attracted international recognition. With a focus on timber construction, Casper, Petersson and Strickland participated in a number of competitions. This includes Swooosh!!! in collaboration with ifau - institut für angewandte urbanistik, and projects for a collective housing scheme in Tensta, Stockholm, awarded first prize in 2005, and a low rise housing scheme in Flottiljen, Stockholm, honoured as 'the most beautiful proposal' by the jury in 2007.
In 2007, the Wallpaper* Architects Directory ranked Realarchitektur among „101 of the world´s most exiting new architects“. Andrew Strickland left Realarchitektur in 2005, and Petra and Jens decided to go their own way by the end of 2007. Since 2008, Petra Petersson has been running Realarchitektur on her own.