Borja Peña

Borja Peña / Founder & Partner Architect

He studied at the Superior Technical School of Architecture of Madrid (ETSAM) and the Technische Universität in Darmstadt, between 1992 and 2000. He subsequently concluded his doctoral studies in the Architectural Projects Department at the ETSAM.

He worked as an assistant professor of Architectural Projects at the ETSAM from 2001 to 2004 and has also been a guest professor at the Universidad Camilo José Cela and the Universidad San Pablo CEU in Madrid.

The extensive training and experience that Borja has accumulated over years of collaboration with prestigious architectural firms, such as that of Rafael Moneo, has enabled him to establish a highly professional practice, having received numerous national and international awards for his professional endeavours, notably including the recent 2012-2014 VETECO ASEFAVE Award for Best Renovation for the work on the covered equestrian arena in Madrid. Furthermore, in 2012, BETA.Ø was named one of the most interesting emerging practices in Madrid by the ARQUIA/PRÓXIMA cultural programme, sponsored by the Fundación Caja de Arquitectos.

His projects have been featured in several specialised publications, books and architecture blogs.

Ernesto Sierra

Ernesto Sierra / Partner Architect

He studied at the Superior Technical School of Architecture of Madrid (ETSAM), where he graduated with a double major in Building and Urban Planning. He received the Ángel Herrera Award for Best Academic Record for the years 1995-1998.

From 2002 to 2007, he collaborated with several renowned architecture firms, including Sancho-Madridejos and Frechilla & López-Peláez. In 2005, he founded Moho Arquitectos, based in Murcia, where he was a partner until 2010. During this period, he

developed several projects of varying scales, won national and international awards, participated in conferences and exhibitions, and his work appeared in several architecture magazines and blogs. He joined BETA.Ø in 2011, becoming a partner in 2015.


Xabier Ortega

Xabier Ortega / Partner Architect

He studied at the Superior Technical School of Architecture of University of Navarra (ETSAUN) from 2006 to 2012, where he obtained Merit Award on his Thesis Project.

After working with various architecture firms and participating in numerous design collaborations in the areas of fashion and visual arts, he joined BETA.Ø in 2013, becoming a partner in 2015.



Collaborators since 2008

Puy Alonso Martínez-Campos, Gaizka Altuna, Carla Arranz Sobrini, Marta Basaglia, Carmen Cabrera, Almudena Cano Piñeiro, Clara Castañeda, Pablo Dacal, Luis Escudero Escauriaza, Miguel Figueira, María García, Alia García Germán, Cristina Gómez Abecia, María González de la Obra, Julio Gótor Valcárcel, Virginia Laínez, Inés Lozano Martín, Isabel Moneo Lara, Manuel Montalvo, Ignacio Muinelo, Javier Muñoz Posse, David Parra, Lucía Pérez, Amaya Pérez, Pablo Rodríguez, Alberto Rubial, Beatriz Ruiz de Hoyos, Cristina Sánchez, Silvia Sordi, Nagore Urrutia del Campo, Regina Valle, Genny Valleta, Pilar Vidal and Mar Videira.