Get inspired!

17,725 architecture projects

Learn from past Buildner architecture competition participants through our extensive project library, curated over more than 15 years!

Recycled Glass and Plastic Segmented House Emphasizing Natural Light and Sustainability

Authors:
Sarah Casas, Mariano Villaescusa
Recycled Glass and Plastic Segmented House Emphasizing Natural Light and Sustainability
Explore the full project presentation!
Subscribers only
Utilizing recycled glass and plastic, the segmented design of this house emphasizes natural light and outdoor connectivity, creating a sustainable living environment tailored for rest and reflection.
5 key facts about this project
01
Inspired by the lifecycle of a caterpillar, the design symbolizes transformation.
02
High-level louvres enhance natural light and ventilation throughout the house.
03
A rainwater catchment system is integrated to promote resource efficiency.
04
Segments are designed for specific functions, providing both privacy and communal areas.
05
Recycled materials include glass windows and plastic wall panels, supporting sustainability.

The Caterpillar House is an architectural exploration that focuses on connecting with the natural world. Located in a setting that encourages this relationship, the design serves as a personal space for rest and reflection. Inspired by the lifecycle of a caterpillar, the structure divides into segments that symbolize change and growth. Each part of the design supports different functions while encouraging a smooth interaction between indoor spaces and the outdoors.

SITING AND SEGMENTATION

The layout consists of four main segments that have specific purposes: Resting, Cleansing, Cooking, and Living & Working. There is also an outdoor area that complements the structure. Each segment measures 2.5m x 2.5m, while the outdoor space expands to 2.5m x 5m. This careful arrangement allows for efficient use of space. It offers both private moments and shared experiences, catering to various needs throughout the day.

ARCHITECTURAL FEATURES

High-level louvres and windows form an important part of the front elevation. These features not only allow natural light into the home but also promote ventilation. They create a sense of connection to the surrounding landscape. The different ceiling heights inside create an interesting rhythm throughout the segments. This variation guides people as they move through the house, encouraging exploration and interaction.

MATERIALS AND SUSTAINABILITY

Materials used in the design reflect a commitment to sustainability. Recycled glass windows, tiles, and countertops reduce environmental impact. Insulated wall panels made from recycled plastic and glass mosaics contribute to energy efficiency. The use of fly-ash concrete floors along with cork tiles and woven matting enhances durability and comfort. Joinery and furniture made from recycled plastic and marine-grade plywood further align with eco-friendly principles.

DESIGN INNOVATIONS

Innovative elements in the design include an adjustable awning and flexible outdoor flooring, which enhance usability. A rainwater catchment system is also integrated, promoting resource efficiency. The layout of spaces encourages well-being and fosters a healthy relationship between people and their environment.

The Cookery segment features high-level storage that can be accessed by a ladder. This design choice reflects an effort to make the most of vertical space while keeping a natural flow throughout the house.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

Enter an open architecture
competition now

The Architect’s 
Stair
The Architect’s Stair
Take a step and make a statement! Edition #3
Kinderspace
Kinderspace
Architecture for Children’s Development #3
Buildner's Unbuilt Award 2025
Buildner's Unbuilt Award 2025
100,000€ Prize / 2025
The Home of 
Shadows
The Home of Shadows
The light studies. Edition #4
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #5

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

`
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.

Buildner's Unbuilt Award 2025

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

Open architecture competitions

  • Closest deadline first
  • Project competitions first
    Selected winning projects have the potential to be constructed
  • Ideas competitions
    Experimental competitions with the focus on pushing the boundaries of creativity
new
Iceland 
Slow Sauna

Design slow sauna in Iceland

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 26 November 2025
Concrete 
Pavilion

Design a concrete pavilion

Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
new
Pavilion Atlas 2026

Design a story of your country

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 21 January 2026

Recurring architecture competitions

new
The Architect’s 
Stair

Take a step and make a statement!

Take a step and make a statement! Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 15 October 2025
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 16 October 2025
Buildner's Unbuilt Award 2025

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
new
The Home of 
Shadows

Design a home with no artificial lighting

The light studies. Edition #4 ideas COMPETITION
Prize Monetary award
Eligibility OPEN TO ALL
Early bird registration deadline 5 November 2025
The Last 
Nuclear Bomb Memorial

Design a memorial that speaks to the cause of ending all nuclear weapons programs

Edition #6 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 13 November 2025
new
The Architect's 
Chair

Take a seat and make a statement!

Take a seat and make a statement! Edition #5 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 20 November 2025
Hospice - 
Home for the 
Terminally ill

Design a safe and supportive space to those struggling with a terminal illness

Edition #5 ideas COMPETITION
Prize 10,000 €
Eligibility Open to all
Final registration deadline 26 November 2025
Museum of 
Emotions

Use architecture to create different emotional states

Edition #7 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
Re:Form - 
New Life 
for Old Spaces

Choose a site—used, abandoned, or forgotten—anywhere in the world, and give it a new purpose

Edition #2 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 3 December 2025

Media, partners and clients

To view this project in detail,
please log in with your
Architects’ Network Plus account.
Subscription instantly unlocks all the architecture projects plus other member-only benefits:
  • Access the 17,725 Concept Library
  • Professional tools including file transfer, email, portfolio management, and more
Register now
Already a member? Log in

This website uses cookies to improve user experience and gather usage statistics.

More information is available in our Privacy & Cookie policy