Based in Barcelona, Soto–Lay Architects was formed in 2007, combining the independent practices of its partners Charmaine Lay and Santi Soto. Soto–Lay Architects is a tri-lingual office working in English, Spanish and Catalan.

We work at all scales of architecture for private clients and public institutions on residential, commercial, corporate and public projects. We design singular buildings, public space, bespoke one-family houses, apartment buildings, renovation and refurbishment of existing buildings and interior design, as well as furniture and exhibitions.



We work without stylistic preconceptions taking each new project as an opportunity, allowing each client’s singularities, programme, context and site to shape the project and make each one unique.
Our architecture is shaped by human activity responding intelligently and sensitively to its environment and allowing and encouraging new relationships with the context, whether urban or rural. It is always underpinned by common sense, structural clarity and sustainability.

Our practice offers a close working relationship with the client to fulfil their programmatic needs, continuously advising and consulting with them during the design process to achieve an architecture that will be enjoyed. If necessary for private clients, we will follow through planning permission applications and take on all necessary consultations with the local authority. We carefully oversee the entire building process paying every attention to detail.

The work of Santi Soto and Charmaine Lay has been awarded, published and exhibited locally and internationally.


Charmaine Lay

Architect. BA(Hons) DipArch COAC
– Londres.

Charmaine Lay was awarded her Degree in Architecture from the UNIVERSITY OF WESTMINSTER and then her Diploma in Architecture from the BARTLETT SCHOOL OF ARCHITECTURE (University College London) in 1994. She has worked in various architectural offices in Barcelona and London. She was a founding partner of CLCM Architects (with Carles Muro) between 1995 and 2007.

She has taught Interior Design at the BAU Design College, Barcelona (2006-2007), later co-running the thesis project programme on the Interior Design degree course at the ELISAVA Barcelona School of Design and Engineering between 2008 and 2011. She currently teaches Interior Design at the ISTITUTO EUROPEO DI DESIGN (IED) on both the degree course and the Masters programme.

Her work has been extensively published and exhibited worldwide.

Santi Soto Pi

Architect. ETSAV-UPC
– Barcelona.

Santi Soto graduated as an architect from ESCOLA TÈCNICA SUPERIOR D’ARQUITECTURA DEL VALLÈS (ETSAV – Polytechnic University of Catalonia) in 1992. He has taught interior design at the BAU Design College, Barcelona and construction at the INSTITUT GAUDÍ DE LA CONSTRUCCIÓ and was an invited professor at the Faculty of Architecture at the DIEGO PORTALES UNIVERSITY in Santiago de Chile in 2014.

He currently runs an architectural design course at the ETSAV (UPC).
Amongst the prizes he has won is the GRAN PREMI FAD FOR INTERIOR DESIGN in 1991.