BIOCLIMATIC CONSTRUCTION: INNOVATION AND SUSTAINABILITY AT KLIMAHOUSE 2025
Bolzano became the epicenter of sustainable architecture during two unforgettable days at Klimahouse 2025, where experts and professionals gathered to explore the innovations that are redefining the future of construction. The Klimahouse Congress was the main highlight, providing an inspiring stage where sustainable technologies and innovative ideas merged to transform the industry.
How can we achieve the perfect combination of materials, energy efficiency, and architectural design? This was one of the key questions that guided the event’s presentations and discussions. Cutting-edge solutions that harmonize comfort and sustainability became the focus of attention, proving that it is possible to build intelligently and in an environmentally responsible way.
The Klimahouse Congress brought together renowned international experts who shared their vision and expertise on the future of bioclimatic construction. Among them, Michael Obrist (feld72 Architekten, Austria), Anna Heringer (Anna Heringer Architecture, Asia), Roger Orriols (ROA Arquitectura, Spain), and Ralf Buchholz (Drees & Sommer SE, Germany) presented projects and strategies that are revolutionizing the way we conceive habitable spaces.
The 2025 edition of Klimahouse has demonstrated that sustainable construction is an achievable reality thanks to research, technology, and collaboration among experts worldwide. An event that has left a lasting impact and will undoubtedly continue to make a difference in the years to come.

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Sustainability
The construction sector is one of the main causes of climate change, so it is necessary to design buildings with…
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Flexibility
ROA conceives flexible architecture that allows spaces to be adapted to the changing needs of their users. Unlike rigid and…
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Circularity
Circular design considers the reuse of construction and demolition waste as raw material. In this way, in each project, whether…
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Transparency
(ES) ROA recopila toda la información necesaria para compartirla con el cliente y así facilitar la toma de decisiones. Las relaciones se basan en la confianza mutua y el compromiso.
- 0 Tn CO2 saved
- 0 % recycled materials in public works
- 0 % of new buildings that recover water

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Architecture
ROA conceives and develops new construction and rehabilitation buildings -
Town planning
International experience in urban planning work makes ROA a company with a global vision of the potential and problems of occupying the territory, but with the capacity to act at the local level -
Project management
ROA directs real estate operations from conception to delivery of the product to the end user -
Consultancy
ROA carries out energy ratings, carbon footprints, advises on sustainable construction, issues technical reports of diagnosis and pathologies in existing constructions, processes certificates of habitability and environmental licenses.
- 0 m2 build
- 0 m2 planned
- 0 % Energy savings in residential construction
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TOWER RESIDENCIAL ILLA CREU ALTA
Residencial Illa Creu Alta is a project that transforms a block of the Illa Creu Alta neighbourhood located north of Sabadell. In the space where an old disused textile factory was located, 131 private homes, 32 public housing, 5 commercial premises, a car park, a square and a promenade are built.
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JEAN PIAGET REHABILITATION
The building will be able to produce more energy than consumed. Winner of a Next Generation Fund (PIREP) of 1,3M €, 5th best public facility in Spain in terms of sustainability and circular design in 2022.
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SEED: REACTIVATION OF THE INDUSTRIAL HERITAGE OF SABADELL
Competition for the rehabilitation of the Sallarès Deu industrial complex
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VENTILATION & LIGHT
Lighting the tradition and use of solar energy at the same time has been used to design simple but efficient solar housing refurbishment in Sabadell.
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CUNIT MUNICIPAL HOUSING
Optimising uses and adapting the most relevant spaces
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WITHOUT LIMITS
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WOODEN HOUSE WITH VIEWS OF THE PYRENEES
A structural system of wood on stilts anchors the house respecting the existing vegetation. Thus, the environment is fully conserved, avoiding significant earth movements that would modify the landscape.
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TECHNOLOGICAL COWORKING – WORKSPACE
Reindustrialisation of the 20th century industrial park in Sabadell (Barcelona)
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WHEN THE HOUSE HELPS YOU
How can we design a house that flows?
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A LIFESTYLE
The Agora, between the city and the individual

Testimonials
MULTIDISCIPLINARY TEAM
ROA is a multidisciplinary team of professionals who collaborate closely from the beginning of the design process. Whenever necessary, the team is expanded to include expert consultants in different areas such as environment, renewable energies, sustainability, landscaping, interior design, structures, installations and services.
All ROA collaborators have an active participation in the creative process

