Principals

Monika Häfelfinger
Monika Häfelfinger, President

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
Austin Kelly, Partner

Austin Kelly (1966-2015) 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.

Scott Utterstrom
Scott Utterstrom, Principal

Scott Utterstrom was born in Portland, Oregon. In 2003 he graduated from California Polytechnic State University, San Luis Obispo with a Bachelor of Architecture. During this time he spent a year abroad studying in Copenhagen, Denmark and traveling throughout Europe visiting many prominent architectural sites. From 2003 through 2006 he worked in the Los Angeles office of AGPS Architecture, working on several award winning projects including the Portland Aerial Tram. In 2006 he received a fellowship to attend the University of California, Los Angeles Graduate School of Architecture and Urban Design and graduated with a Master of Architecture degree in 2007. He started working for XTEN Architecture in 2007 and played a key role in many of the award winning projects developed during this time. In 2014 he was promoted to associate, becoming the first of such for XTEN Architecture. In 2015 he became a principal of XTEN. Scott Utterstrom lives in Los Angeles.