J. MAYER H. Architects, Juergen Mayer H.

Project architects: Jens Seiffert

Project team: Christoph Emenlauer, Jesko Malkolm Johnsson-Zahn, Christian Paelmke, Max Reinhardt, Jan-Christoph Stockebrand

Client: Wohnungsgenossenschaft "Carl Zeiss" eG, Jena

Function: Four new buildings with office, retail and residential spaces

Location: Sonnenhof 9, Jena, Germany

Total floor area: 9.555 m2

Construction costs: 16.000.000 €

under construction

Project date: 2008-2014

Completion: 2015

Architect on site: Kappes Partner IPG GmbH, Berlin, IBP Ingenieure fuer Waerme- und Haustechnik, Erfurt, GBI Gackstatter Beratende Ingenieure GmbH, Erfurt

Structural engineer: Ingenieurbuero Dr. Kraemer GmbH, Weimar

Building service engineer: Scholze Ingenieurgesellschaft mbH, Dresden

Building physics: Ingenieurbuero Santer – Bauphysik, Duisburg

Ventilation consultant: Ingenieurbuero Rau, Heilbronn

Traffic engineering consultant: GRI Ingenieure, Berlin

Fire security consultant: Ingenieurbuero Dr. Kraemer GmbH, Weimar

Facade consultant engineer: Fassade-Lab GmbH, Grossbeeren

Roof sealing consultant engineer: Ingenieur- und Sachverstaendigenbuero für Dach- und Abdichtungstechnik Dipl. Ing- Hans Georg Kiessmann, Erfurt

Construction surveying: Dipl. Ing. Roland Wuttke, Jena

Lighting engineer: Lichttransfer Buero fuer Lichtplanung, Berlin

Geology engineer: Geotechnik Dr. Nottrodt Weimar GmbH, Weimar

Project management: Kappes Partner IPG GmbH, Berlin

Inspection engineer: Dr.-Ing. Joerg Diener, Erfurt

OUtside facilities consultant: Ingenieurbuero Abraham, Berlin

Interior construction office: Friedrich Wackerhagen GmbH&Co.KG, Pattensen with Haworth,Ahlen

Photographer: David Franck

Sonnenhof consists of four new buildings with office and residential spaces. Located on a consolidated number of smaller lots in the historical center of Jena, Germany, the separate structures allow for free access through the grounds. Their placement on the outer edges of the plot defines a small-scale outdoor space congruent with the medieval city structure. Its outdoor facilities continue the building’s overall design concept past the edges of the lot. The planned incorporation of commerce, residence, and office enables a flexible pattern of use that also integrates itself conceptually into the surroundings.