Ca L’Àgata by El Fil Verd, Estudi d'Arquitectura. Image Credit: Milena Villalba

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How do the material choices we champion at revalu translate into real-world architecture?

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From adaptive reuse and circular construction to bioclimatic design and locally sourced materials, revalu’s 2026 Open Call highlights different ways of working with existing resources, rethinking what we build with, and making more environmentally responsible choices. 

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Here’s a first look at this year’s winners and finalists.

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THE WINNERS

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HAUS G · Company Winner

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LOCI Architektur + Stefano Mori Architecture

‍Bad Dürrnberg, Austria · 2024

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An existing rural house transformed into a multi-generational home for three households. Adaptive reuse meets a new timber and straw extension, combining natural materials, self-build and a new model for rural living. 

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The Company Winner receives a 1-year revalu Pro Membership.
Explore the project’s materials.

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HAUS G by LOCI Architektur + Stefano Mori Architecture. Image Credit: Nadia El-Ayachi

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GROWTH · Individual Winner

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Kalina Helena Slominska

‍Skåne, Sweden · 2026

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What if architecture followed the rhythm of the resources it depends on? GROWTH explores a design process shaped by the growth, harvest and regeneration of locally available materials, connecting architecture with agriculture and landscape.

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The Individual Winner receives a Mycelium Lamp, courtesy of Myceen.

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GROWTH by Kalina Helena Slominska. Image Credit: Kalina Helena Slominska

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COMPANY FINALISTS

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Impact Hub Berlin at Crclr-House

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LXSY Architektur
‍Berlin, Germany · 2022

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A coworking and community space designed around circularity from the start. Reused components, renewable materials and demountable systems create an interior designed for both present use and future reuse.

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Explore the project’s materials.

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Impact Hub Berlin at Crclr-House by LXSY Architektur. Image Credit: Studio Bowie

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Ca L’Àgata

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El Fil Verd Estudi d'Arquitectura

‍Barcelona, Spain · 2020

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A 1940s house reimagined through passive and bioclimatic principles. Low-impact materials, vegetation and architecture work together to create a contemporary home shaped around comfort, health and nature.

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Explore the project’s materials.

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Ca L’Àgata by El Fil Verd, Estudi d'Arquitectura. Image Credit: Milena Villalba

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Felsenburg

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Sara Gelibter Architecte

‍Biel-Bienne, Switzerland · 2024

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A 19th-century winery, later a hostel, given another life as a contemporary home. The extension and restoration preserve its historic character while upgrading the building for a new generation of use.

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Explore the project’s materials.

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Felsenburg by Sara Gelibter Architecte. Image Credit: Cyril Käppeli

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The House in the Woods

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El Fil Verd Estudi d'Arquitectura

‍Garraf Natural Park, Barcelona, Spain · 2020

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A passive, bioclimatic home shaped by a steep site, limited resources and a tight budget. Embedded into the natural slope, it minimizes excavation and resource use while bringing performance and affordability into the same design approach.

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Explore the project’s materials.

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The House in the Woods by El Fil Verd, Estudi d'Arquitectura. Image Credit: Milena Villalba

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This is only a first glimpse. We’ll take a closer look at each winner over the coming weeks.

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In the meantime, discover the projects and materials behind them in our community collections.

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Find, compare, and optimize materials across cost, carbon, and technical performance with verified product data and AI.

Try it with Kasper, our AI Material Advisor.
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