studio
HCD Arquitectos is an architecture studio based in Lisbon, established by Helga Constantino and David Diniz.
Since 2019, the studio has developed projects across a range of scales and contexts, responding in an integrated way to the specificities of each programme and place.
The practice is grounded in a contemporary approach, where each project is conceived as a unique solution, balancing concept, functionality, and execution, with a strong focus on rigour, quality, and attention to detail.
HCD Arquitectos values a close and collaborative relationship with its clients, accompanying each stage of the process — from initial concept to development and construction — with clarity, engagement, and responsibility.
Through a structured yet flexible approach, the studio addresses the specific challenges of each project, ensuring consistent, feasible, and goal-oriented solutions.
In addition to architecture, HCD Arquitectos is also active in real estate consultancy (AMI License 24960), offering strategic and tailored advisory services
Helga Constantino – Lisboa . 1974
She graduated in Interior Architecture from the Faculty of Architecture of the Technical University of Lisbon in 1998, and later completed a postgraduate degree in Architecture at the same institution in 2002.
In 2000, she attended the Master’s programme Architecture, Art and Ephemeral Space at ETSAB – UPC Barcelona, as a grantee of the Camões Institute.
She began her professional activity in 1994, working as an architect and project coordinator in several studios, including Miguel Arruda Arquitectos and Atelier Central.
A highlight of her career is her role as project coordinator at Aires Mateus e Associados, where she worked between 2007 and 2021.
In 2019, she co-founded HCD Arquitectos with David Diniz.
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David Diniz – Lisboa . 1970
He graduated in Architecture from the Faculty of Architecture of the Technical University of Lisbon in 1994.
Since then, he has developed his professional activity as an architect in several studios, including C.I.A.M. and Júlio Saint-Maurice, while also maintaining an independent practice as an architect and project coordinator.
Between 2004 and 2021, he collaborated with Hipólito Bettencourt Landscape Architecture, working on projects in architecture, landscape design, and public space.
He currently continues this activity both independently and in collaboration with various studios, including in loco and Pátio Atelier.
He has been active in real estate consultancy since 2012.
In 2019, he co-founded HCD Arquitectos with Helga Constantino.