Architecture practice Cierto Estudio received first prize in the IMHAB competition for its "Illa Glòries" project, a complex of 51 social housing units in Plaça de les Glòries, Barcelona. The project is part of "La Comunitat Habitacional," a collective housing initiative in Barcelona's Eixample district.

Nominated for the 2025 Mies van der Rohe Award, the building is located at the intersection of the 22@ technology district with the historic Eixample neighbourhood, extending the latter's grid through two volumes that house 51 collective housing units around two courtyards.

"Illa Glòries", by Cierto Estudio, aims to foster community life through courtyards and rooftops connected to the apartments by exterior walkways, creating flexible, interconnected, adaptable, and permeable spaces.

Replicable models of affordable housing are generated, responding to the city's pressing needs. Each apartment is organized around a rotated central space that multiplies connections and allows the home to adapt to changing family needs. The kitchen, contrary to the norm, is located on the south facade, recognizing domestic work as a fundamental pillar of family life and giving this space a new, gender-sensitive approach.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

Sustainable construction is prioritized with a mixed structure of cross-laminated timber (CLT) for floors, walls, and facades, metal for walkways, and reinforced concrete for vertical circulation loops.

Project description by Cierto Estudio

Winning the 2017 international competition organized by the Institut Municipal de l'Habitatge i Rehabilitació de Barcelona (IMHAB), Cierto Estudio proposed a groundbreaking design for the Illa Glòries block, situated at the nexus of Barcelona's 22@ technological district and the historic Eixample neighborhood.

This ambitious project involves the construction of 238 apartments. Building A, designed by Cierto Estudio, includes 51 dwellings and reflects a holistic approach to urban living. The design integrates gender perspective strategies, ensuring inclusivity and adapting to diverse family structures.

Designed with a gender perspective, the project promotes equity, safety, and shared responsibility in domestic and caregiving tasks. By incorporating spatial strategies that encourage interaction, mutual support, and visibility of caregiving activities, the design fosters an inclusive environment that adapts to diverse family structures.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.
"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

Extensive Communal Spaces
Two large courtyards and continuous communal balconies encourage interaction among neighbors while providing secure and vibrant environments for socializing and relaxation. The arrangement of homes around these shared spaces follows a "corrala" layout, a strategy that cultivates a network of mutual vigilance and enhances collective security, particularly relevant from a gender perspective, as it helps reduce risks associated with gender-based violence. The spatial configuration ensures crossed sightlines, reinforcing a naturally protected environment. The courtyards are shielded from public activity yet visually connected to the street, blending privacy with openness. The balconies act as outdoor meeting points, linking residences to shared spaces like patios and rooftops, thus transforming them into integral parts of everyday life.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.
"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

Dynamic Living Spaces
Flexible apartment layouts prioritize adaptability, ensuring that homes can evolve with the changing needs of their occupants. Each residence is designed to de-hierarchize living spaces, eliminating a main central area or a predefined space for a dominant figure. Instead, rooms of similar size and character allow residents to distribute space freely according to their needs, promoting equity in everyday life. The design also integrates a thoughtfully positioned kitchen that enhances connectivity within the home and fosters an inclusive environment. Additionally, hinged spaces and centrally located rooms create opportunities for both physical and visual connections, promoting individual autonomy as well as communal living.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.
"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

Environmental Responsibility
The project adheres to NZEB (Nearly Zero Energy Building) standards, employing cross-laminated timber (CLT) for its structure, maximizing thermal insulation, and integrating passive design strategies such as cross-ventilation, solar protection, and green roofs. Over 60% of the site is dedicated to green spaces, mitigating the urban heat island effect.

"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.
"Illa Glòries" by Cierto Estudio. Photograph by José Hevia.

More information

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Architects
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Cierto Estudio, Franc Llonch. Principal architects.- Anna Llonch Sentis, Marta Benedicto Izquierdo, Ivet Gasol Escuer, Carlota de Gispert Sampera, Lucia Millet de Ferrater, Clara Vidal Riera.

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Project team
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Marta Benedicto, Ivet Gasol, Carlota de Gispert, Anna Llonch, Lucia Millet, Clara Vidal, Mariana Gomes.

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Collaborators
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Structure.- Bernuz Fernández Arquitectes S.L.P.
MEP.- Eletresjota Tècnics Associats S.L.P.
Acoustics.- Áurea Acústica.
Construction management.- Ángel Gil. 
Environmental.- Societat Orgànica. 
Landscaping.- Beatriz Borque + Miquel Mariné, Borque-Mariné.

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Client
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Institut Municipal de l’Habitatge i Rehabilitació de Barcelona.

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Area
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Site area.- 1,398 sqm.
GFA.- 8,371 sqm.

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Location
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Barcelona, Spain. 

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Budget
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1,135 €/sqm.

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Photography
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CIERTO ESTUDIO is an architectural studio founded in 2014 by six young architects: Marta Benedicto, Ivet Gasol, Carlota de Gispert, Anna Llonch, Lucia Millet and Clara Vidal. Since then, the team has grown and solidified its professional practice with the addition of Jesús Fajer, Mariana Gomes and Adrián Maldonado. Having been born from plurality, its thinking is inevitably diverse and is reflected in its collaborative work methodology that seeks the maximum architectural vindication and its own character.

Its fascination with the field of collective housing stands out, with innovative designs designed to adapt to different lifestyles. In this field, the studio won its first prize in 2017 for ¨Illa Glòries¨ in Barcelona. Its ¨Kitch-room¨ project also won first prize to develop a building with 68 apartments. Finally, its recent award to lead the New Green Axes Model of the ¨Superilla Barcelona¨ urban development plan, led the studio to lay the foundations for the sustainable transformation of the Eixample network in the next decade.

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Published on: January 5, 2026
Cite:
metalocus, ELVIRA PARÍS FERNÁNDEZ
"Flexible and equitable housing. "Illa Glòries" by Cierto Estudio" METALOCUS. Accessed
<https://www.metalocus.es/en/news/flexible-and-equitable-housing-illa-glories-cierto-estudio> ISSN 1139-6415
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