XTEN Architecture is an award-winning architecture firm based in Los Angeles, California and Sissach, Switzerland. Founded in 2000 by partners Monika Häfelfinger SIA and Austin Kelly AIA, XTEN Architecture is a full service architecture and design firm specializing in custom residential, cultural, institutional and commercial buildings. Architectural designs are developed using innovative materials, advanced structural strategies, sustainable technologies, and guided from schematic design through the successful completion of construction.
XTEN approaches architecture with an emphasis on strategic planning, open spatial configurations, refined material detailing and the highest level of craftsmanship. Through research and analysis, the architects distill the parameters of site, structure, project brief and resources into strong sculptural forms at the scale of the landscape. The interior-exterior spaces created open to and are completely transformed by direct connections to nature and the buildings’ immediate environment.
XTEN Architecture has received numerous architectural awards, including several International Architecture Awards from the Chicago Athenaeum/ European Centre for Architecture, the National AIA Housing Award, several American Architecture Awards, AIA California Council Architecture Awards, the IV Miami+Design Bienal Architecture Award, the Los Angeles Architecture Award, the Bloomberg Luxury Property Award, Custom Home of the Year Award and a number of awards from the Los Angeles American Institute of Architects. The work of XTEN Architecture has been has been exhibited in the US and Europe and published extensively, appearing on the covers of Architectural Record, Architectural Digest, Elle Décor, Architectur und Wohnen and in the New York Times, The Los Angeles Times, Wallpaper, MARK, Architectural Record, Interior Design, Angeleno, LA Architect, FORM, Interni/ Russia, Times Space/ China, IW/ China, DETAIL/ Korea, IDS/ Korea, Spa De/Japan, Belle/ Australia, Disenart/ Spain, REM/ Portugal, AD Mexico, Deutsche Bauzeitung amongst others, and in numerous international architecture and design books.
Current work in development and construction include residential, hotel, apartment, retail and cultural projects in the US, Europe and Asia. In June 2013 recent projects by XTEN Architecture were exhibited in “A New Sculpturalism: Contemporary Architecture from Southern California” at the Museum of Contemporary Art (MOCA) Los Angeles.
Monika Häfelfinger was born in Basel, Switzerland. From 1982 to 1986 she apprenticed at the office of her father, an ETH/ Harvard GSD educated architect, Häfelfinger Architekten in Sissach, Switzerland. In 1987 she moved to Los Angeles to enroll in the undergraduate architecture program at University of Southern California, from which she graduated with a Bachelor of Architecture Degree in 1992 receiving the Robert Allen Rogaff Award. In 1994 she graduated from Columbia University with a Master of Science Degree in Advanced Architectural Design. From 1994 through 1995 she worked for the architectural office of Herzog and de Meuron in Basel, Switzerland, playing a key role in several award winning buildings and competitions. In 1996 she returned to the US, working for DMJM/ Keating on high-rise buildings in Asia before establishing her own design studio later that year. In 2000 she established XTEN Architecture with partner Austin Kelly. Monika Häfelfinger lives in Los Angeles.
Austin Kelly, AIA was born in Boston, Massachusetts. In 1988 he graduated from Williams College in Massachusetts with a Bachelor of Arts degree in Studio Art and Economics and was awarded the Sanderson prize in Architecture. In 1989 he attended SCI-Arc in Vico Morcote, Switzerland for architectural design studios with Peter Zumthor and Ivano Gianola. In 1993 he graduated from Yale University Graduate School of Architecture with a Master of Architecture degree. From 1993 through 1998 he worked in the Los Angeles architectural offices of Frank Israel, Frank Gehry and Eric Owen Moss, playing a substantial role in several award winning projects. In 1999 he worked for DMJM/ Keating on high-rise buildings in Asia, and also began teaching at SCI-Arc in Los Angeles. From 2000 to 2004 he led architectural design studios at the University of Southern California School of Architecture. In 2000 he established XTEN Architecture with partner Monika Häfelfinger. Austin Kelly lives in Los Angeles.