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Inflatable Etfe Housing Integrated Within an Abandoned Water Tower

Authors:
Salam Yousef, Maryem Lachgar
Inflatable Etfe Housing Integrated Within an Abandoned Water Tower
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Nestled within an abandoned water tower, the design merges inflatable ETFE structures with two compact living units, creating a sustainable residential solution that revitalizes underutilized urban space.
5 key facts about this project
01
Repurposes an abandoned water tower as a residential space.
02
Incorporates inflatable ETFE structures for energy efficiency.
03
Features a roof garden that enhances greenery in urban settings.
04
Utilizes rainwater collection for sustainable water supply.
05
Offers panoramic views from the viewing platform atop the tank.

The 360° Inflatable Parasite project reimagines an abandoned water tower located in Scalo Ferroviario Porta Romana, Milan, Italy, into a lively residential space. The design addresses urban development challenges by creating a functional living environment that respects the history of the structure. The core concept integrates two tiny houses within the tower, offering an efficient housing solution that reduces the demand for new construction.

Residential Integration

The design includes two tiny houses, with one placed inside the tower and the other situated nearby. Each unit occupies a compact space, limited to 15 m², and incorporates necessary amenities such as a kitchen, washroom, storage, and combined living and bedroom areas. This thoughtful arrangement makes the most of limited space while ensuring comfort and usability.

Sustainable Features

Sustainability is a key focus of the project. The existing water tank provides a source of water for the two tiny houses. A rainwater collection system further supports its self-sufficiency. The design includes circulation paths that allow easy movement both within and around the tower, fostering a connection between the residents and the vibrant urban environment outside.

Material Approach

The inflatable structures that wrap around the tower are made from ethylene tetrafluoroethylene (ETFE). This material is known for being durable, lightweight, and highly transparent. It enhances energy efficiency by allowing more UV light inside while providing better insulation than traditional materials. These inflated volumes create adaptable living spaces that respond to different weather conditions, enriching the experience for those living there.

Community Engagement

A notable aspect of the design is the roof garden and viewing platform on top of the water tank. This feature not only improves the building's appearance but also serves as a shared space where residents can interact and enjoy views of their surroundings. The inclusion of communal areas reflects a modern understanding of urban living, where social connections are as important as private comfort.

The project creates a blend of past and present, turning a forgotten structure into a place that invites people in. With its focus on utility, sustainability, and community, it illustrates a thoughtful approach to urban living that respects its historical context while adapting to contemporary needs.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

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Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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