Get inspired!

17,725 architecture projects

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

Vertical Expansion with Fiber Cement and Wooden Additions for Urban Housing

Authors:
Anna Niedźwiecka, Daria Kaczmarczyk, Paulina Cieśla, Emil Micewicz
Vertical Expansion with Fiber Cement and Wooden Additions for Urban Housing
Explore the full project presentation!
Subscribers only
Combining vertical residential units with lightweight wooden construction and fiber cement siding, the design reimagines existing plattenbau structures to enhance urban housing density and sustainability.
5 key facts about this project
01
Incorporates scaffolding to ensure sunlight access for all residential units.
02
Utilizes removable installation segments for efficient utility management.
03
Features lightweight wooden construction for quick assembly and transport.
04
Prioritizes rainwater management with integrated reservoirs and septic systems.
05
Enhances existing plattenbau structures by adding vertical residential units.

The Parasite House project addresses housing challenges linked to plattenbau structures in urban areas like Warsaw. Developed during the housing crisis of the 1950s, these buildings used prefabricated concrete slabs to offer affordable solutions. However, as urban needs evolve, the limitations of plattenbau construction regarding density and livability are becoming clearer. The Parasite House concept looks to improve these structures by adding new living spaces that extend vertically along their facades, enhancing the function without requiring more land.

Architectural Concept

The design introduces a model that expands vertically, allowing the creation of new residential units that rise along existing walls. By doing this, it increases housing density while preserving the character of the original buildings. The project aims to blend old and new elements, fostering a sense of continuity in the urban landscape.



Light and Sustainability

Ensuring natural light reaches all living units is a crucial aspect of the design. Scaffolding is used not just for support during construction but also to maintain access to sunlight for residents. The careful positioning of photovoltaic systems takes advantage of the buildings' east-west orientation, ensuring effective solar energy capture and promoting greater sustainability in energy usage.



Water Management

Water and energy management are also key considerations in the design. The Parasite House includes a removable installation segment that provides clean water and electricity to residents. Effective solutions such as rainwater reservoirs and a septic system help manage essential utilities, reducing the overall environmental impact in a city setting.



Materiality

Lightweight wooden construction is chosen for its benefits in transport and installation. This approach fits with current sustainability practices and allows for speed in assembly while maintaining structural strength. Additionally, fiber cement siding adds durability and improves the appearance of the new living spaces, helping them blend with their surroundings.

The outcome results in flexible living areas that meet modern demands. Features such as two independent workspaces cater to the rising trend of remote work, reflecting the need for multifunctional environments in today’s urban life.

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