HHF architects is a Basel-based practice founded in 2003 by Tilo Herlach, Simon Hartmann, and Simon Frommenwiler. Operating at the intersection of architecture, urbanism, and cultural production, the office develops projects that respond to specific contexts while engaging broader spatial, social, and ecological questions. HHF’s award-winning work spans geographies and typologies, reflecting a belief that architecture is not a product of style but of process.
Current projects include Starlette, a mixed-use ensemble in Strasbourg; Poissy Galore, an observatory and museum in a landscape park near Paris; and Landskronhof, a residential courtyard densification in Basel. HHF contributes to urban transformation discourse in Switzerland through competitions and studies. With a diverse international team, dialogue is central to the practice.Rather than offering final answers, HHF creates adaptable frameworks, using architecture as a medium for transformation. They teach and research architecture at institutions such as the Harvard Graduate School of Design and the Faculty of Architecture at the Karlsruhe Institute of Technology.