Beldarrain Architectural Studio began its professional activity in 1999, based on the experience acquired by Juan Beldarrain, in the studios of Joseph Paul Kleihues, in Berlin, and Rafael Moneo, in Madrid and San Sebastián.

Since then, we have carried out our work understanding that architecture is an activity providing service, which leads us to rely permanently on innovation, not as a merely aesthetic attitude but as one based on concepts linked to programme analysis, the user, the location, economy and to the construction itself.

For this reason, the team working at the studio is mainly composed of architects and it is organized so as to handle big projects of architecture, city planning and design. Our working method, coordinating multidisciplinary teams, leads us to collaborate with consultants who are expressly selected for each project.

Juan Beldarrain


Monica San Juan

Partners architects:

Itziar Combarros
Idoia Garmendia


Lorena Cores
Leire Lertxundi
Ane Rodríguez
David Quintano

Quantity surveyors:

Jesus Mari Salaberria
Kepa Jauregui
Jon Iturbe


Urculo Ingenieros
Boslan Ingenieria y Consultoría
Meik Ingenieria y Consultoria


LP Arquitectura e Ingenieria
Dimark Estructuras
Jose Eugenio Caro

BIM Advisor:

SS BIM. Jonathan Chanca

Higher Degree in Architecture awarded by the ETSAN (Higher Technical School of Architecture of Navarra) in 1991, when he was granted the Award to the most Outstanding Graduate in Architecture from this University. He moved to Berlin to work at J. P. Kleihue’s architectural and city planning studio between 1991 and 1993.

He worked at Rafael Moneo’s architectural studio, first in Madrid, between 1994 and 1996, and afterwards as the site manager at the Kursaal Auditorium and Conference Centre in San Sebastián until 1999.

In 2000 he established “Beldarrain estudio de arquitectura” (Beldarrain architectural studio) in San Sebastián, and between 2001 and 2004 he combined the work at the architecture studio with his activity as Professor of Projects at the ESARQ (Higher School of Architecture) of the Cataluña International University, in Barcelona. He currently collaborates with the San Sebastián Higher School of Architecture as an external tutor for End-of-Studies Projects.

Juan Beldarrain

Higher Degree in Architecture awarded by the E.T.S.A. (Higher Technical School of Architecture) of San Sebastián in 2004, with the grade of Merit in her End-of-Studies Project. She attended the Belleville School of Architecture in France for a year with an Erasmus scholarship. After gaining experience in different architecture studios, she joined Estudio Beldarrain in 2004, where she has been working as a Project Manager since 2008. She stands out for her participation, among others, in 106 dwellings for young and elderly people in Marrutxipi, San Sebastián, which were granted the award of the COAVN (Basque-Navarrese Professional College of Architects) in 2013.

Itziar Combarros

Architect by the E.T.S.A. (Higher Technical School of Architecture) of San Sebastian in 2007. She attended the Reggio Calabria School of Architecture in Italy for a year with an Erasmus scholarship.

Between the years 2007 and 2013 she collaborated with the studio where she stands out for her participation, among others, in the Carmen Martín Gaite building project for Carlos III University, the first public academic building with a leed platinum certificate.
From the year 2013 she has collaborated with other architecture offices, where she had gained experience in urban planning and has participated in relevant projects of San Sebastian, such as, the renovation of Anoeta Stadium.

In 2015 she joined again Estudio Beldarrain as a partner and Project Manager.

Idoia Garmendia