This competition is part of a strategic partnership between Buildner and ArchDaily that aims to explore "The Contemporary Home".

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Introduction

COMPETITION ORGANISERS
Underbridge #2

As cities expand, vertical and horizontal spaces are continually redefined, adapting to the pressing demands of urban living. Yet, beneath the expanse of our infrastructure lies a matrix of underutilized spaces, often overshadowed by their towering counterparts - the bridges that stitch our cities together. These underbridge spaces, ranging from small niches to vast expanses, remain dormant, echoing the hum of the traffic above, waiting for visionaries to tap into their latent potential.

In our relentless pursuit to address urban housing needs, Buildner is proud to unveil its 20th competition in the Affordable Housing Series, marking another milestone in the exploration of innovative living solutions. This edition also represents the second edition of Underbridge, our housing challenge focused on the overlooked and underexplored spaces beneath bridges around the world. Through this challenge, architects and visionaries are invited to reimagine these environments and unlock their potential — transforming them into dynamic, thriving communities that resonate with the city’s heartbeat. 

Beneath city bridges worldwide lies untapped potential, vast spaces brimming with opportunity. Underbridge invites visionaries to transform these areas into thriving communities. Buildner is searching for designs that can cater to a wide array of residents, ensuring a perfect blend of scalability, affordability and eco-consciousness. It is an invitation to revolutionize these overlooked spaces with a fresh, practical perspective.

Participants have the liberty to pinpoint any underbridge site across the globe for their visionary designs. Essential considerations include the site’s accessibility, available amenities, and how the proposed solution harmonizes with the existing community. The designs should showcase adaptability, ensuring they cater to various needs while remaining both cost-effective and sustainable.

With this challenge, the boundaries are set by your own creativity. Buildner urges entrants to think big, think different, and present housing solutions that challenge the norm. The underbridge spaces await your transformative touch. Let your imaginations run wild, and let’s craft a vision where these spaces become the heartbeat of urban communities.

Download the full competition brief for more information!  

Competition is open to all. No professional qualification is required. Design proposals can be developed individually or by teams (4 team members maximum). Correspondence with organizers must be conducted in English; All information submitted by participants must be in English.

Brief

The competition brief is available for download at any time in the following language: English, Italian, French and Spanish.

FULL COMPETITION BRIEF [ENG][IT][FR][ES]

Download brief

Prizes

Prize fund

8,000 €

1ST PLACE

4,000 €

2ND PLACE

2,000 €

3RD PLACE

1,000 €

Buildner Student Award

1,000 €

(more details)

6 Honorable mentions & certificates

Buildner will acknowledge the outstanding performance of all winners and honourable mentions with Certificates of Achievement.

Publicity campaign

Buildner's publicity campaign offers extensive exposure to the architectural community, ensuring that the results of the competition are seen by a vast audience:

Buildner's two million

The results are published on buildner.com, a leading website in the architecture industry, attracting over one million unique visitors annually. Additionally, the campaign extends to Buildner's social networks, which boast over 800,000 followers combined, and through newsletter campaigns reaching over 200,000 subscribers.

Interview and movie

Winners will have the opportunity to submit a movie and an interview, boosting their recognizability and helping to build their name in the industry.

Extensive media network

Buildner leverages an extensive network of media industry leaders to publish the competition results. This broadens the audience further, ensuring that participants' work is showcased across multiple platforms known for their influence and reach in the architecture and design sectors.

Publicity

ArchDaily feature

As part of the collaboration between Buildner and ArchDaily, the competition winners will be showcased on ArchDaily, a leading architecture news platform.

This feature will greatly boost the winners' visibility to millions of architecture professionals and enthusiasts worldwide, increasing their chances for new opportunities, attracting new clients, and establishing their reputation in the industry.

Read more about Buildner and ArchDaily partnership
&

The Buildner Medal

Learn more

Winners of this competition will automatically be included in the annual final, where they will compete for the Buildner Medal Award alongside a limited number of Buildner competition winners.

The Buildner Medal 2027

50,000 €

By invitation only. One life-changing award a year. The invitation is earned here.

1st place25,000 €
2nd place15,000 €
3rd place5,000 €
Student award5,000 €
  1. Enter Underbridge #2 competition

    Register and submit your project before the deadline.

  2. Be among the winners

    1st, 2nd or 3rd Prize, or a special award such as the Student or Sustainability Award, depending on the competition.

  3. Access invitation-only
    Buildner Medal Award

    Invitation sent to every winner. Nothing to submit, nothing to pay.

  4. Share 50,000 € prize fund

    The jury awards the Buildner Medal among invited projects only.

Jury

Jury members shall under no circumstances be contacted by competition participants or their representatives. Participants who attempt to contact jury members, shall be disqualified.

All jury members are involved in the evaluation based on their availability at that time. All communication regarding the competition should only be carried out with Buildner staff. For any questions please contact us on [email protected]

Luciana de la Garza Arregui

Estudio Atemporal

Mexico

Maya Bird-Murphy

Mobile Makers

United States

Đoàn Thanh Hà

H&P Architects

Vietnam

Jenchieh Hung

HAS design and research

Thailand

Rajeev Kathpalia

Vāstu Shilpā Sangath

India

Kulthida Songkittipakdee

HAS design and research

Thailand

Elke Sterling-Presser

Co Founder and Director, Sterling Presser Architects and Engineers

Germany

Nicolas Sterling

Co Founder and Director, Sterling Presser Architects and Engineers

Germany

Zehua Zhang

KPF

United States

Ask questions to the jury panel directly!

This option is available to registered participants only.

If you are registered, please access your upload panel and look for the
Jury Questions & Answers section.

Ask to all.
One collective jury answer
Ask a
specific jury member
Ask questions about

The brief

Interpretation and intent of the competition brief

Your task

Key themes, priorities, or values considered during evaluation

Design help

General design approach or conceptual direction

Personal design assessment

Request an in-depth design assessment of your project after results are announced.

The design assessment highlights each project’s strengths and areas for improvement, giving participants valuable insight into their work. It helps them better understand their submission, compare it to other entries, and identify opportunities for growth in future projects.

Key dates

Send reminders

Ask questions to the jury panel directly!

This option is available to registered participants only.

If you are registered, please access your upload panel and look for the
Jury Questions & Answers section.

Ask to all.
One collective jury answer
Ask a
specific jury member
Ask questions about

The brief

Interpretation and intent of the competition brief

Your task

Key themes, priorities, or values considered during evaluation

Design help

General design approach or conceptual direction

Absolutely not! You’ll always keep full ownership and authorship of your project. Submitting to a Buildner competition doesn’t mean giving up your rights — it simply gives us permission to share and promote your work as part of the competition. We may feature your project on our website, social media, newsletters, books, or exhibitions — all to celebrate your creativity and inspire others. This permission helps us give your work the visibility it deserves, without needing to ask you each time we publish it.
Click on "register now", fill in all the required fields, choose your payment method and submit your information. You will be forwarded to Paypal or CPS secure payment gateway, to cover the competition fee. Once we receive your payment, we'll send you an email with your username and password to upload your submission directly to the website.
You can add/remove/edit team member information as often as you want in the upload panel, up until the submission deadline.
Yes we are in the process of negotiating with multiple international industry-related media representatives. The list of media partners is constantly updated on our website, please check it regularly to find latest updates.
Yes. If the jury panel selects a Student award's submission for the top 3, it will automatically be awarded both prizes.
No. Competition entries are evaluated anonymously. The participant registration type is only revealed upon the announcement of the results.
Please contact us – [email protected] and we will address the problem directly.
The short answer is yes, you may submit a previously published design concept as long as you are the author. Before re-submitting your project, please carefully read the following clarification points listed here - architecturecompetitions.com/resubmit-your-design
As AI-generated images may be based on pre-existing work or generated using proprietary algorithms, it is best to check the specific terms and conditions of the AI tool used to generate the image to determine its ownership status. It may also be necessary to seek legal advice to fully understand the ownership rights and any restrictions that may apply. In general, it is not recommended to consider AI-generated images as your sole work or intellectual property unless you have obtained explicit permission to do so.
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Architecture competitions hold a unique and important place in the profession, offering value both to society and to the architects who participate. As architects, we have a responsibility to be visionaries in the built environment and to champion equitable, sustainable, and beautiful design. Competitions provide a forum to test those ideas while building a toolkit of skills and approaches that can inform our work and, potentially, the work of others. They create space for critical investigations of the design zeitgeist and for experimentation that can push the discipline forward. I participate for my own growth as a designer—and because they are good fun.

We treat competitions above all as a way to test ourselves. Each one is a chance to push into unfamiliar territory — new project types, new tools and software, new ways of working — and to come out the other side with knowledge and skills we didn't have going in. Just as importantly, competitions strengthen the team. Working intensely toward a single deadline shows us where each person is strongest and how we work best together, so that every entry leaves us more capable and more efficient on the next one — and on the real projects that follow. The result matters, but the growth is the point.

Because unbuilt ideas can be quite loud in our heads, and we need an outlet for them. In all seriousness, competitions give us a pure, unfiltered platform. It’s a place where our ideas can be seen and our voices can be heard, totally free from the usual compromises of strict zoning codes or conservative budgets.

The best architectural ideas often arrive uninvited — and competitions are one of the few places where that's actually allowed. Without a client brief narrowing the aperture before the thinking has even begun, competitions create the rare conditions for genuine exploration.

HONORABLE MENTION

Architecture competitions give us a chance to investigate new ideas and spend time thinking about what’s next. This intellectual space allows us to see the world differently and we soon find we are applying what we learned during a competition to our real-world projects.

We participate in architecture competitions to exchange ideas with the very best talents and front tier emerging architects. Most importantly, to showcase our work to the world.

STUDENT AWARD
Authors

Tanqing Cheng and Wenjia Shen from United States, Cornell University College of Architecture, Art, and Planning!

Competitions give us room to ask questions that commissioned work rarely allows. Daily practice, with its budgets, schedules, and codes, is essential, but it can slowly narrow what we allow ourselves to imagine. A competition lets us step back and test ideas we care about: architecture that is participatory, that changes over time, and that belongs to the public as much as to its designers.

Holding an idea is easier said than done, and this is why I keep entering competitions. Everyday work answers to programmes; a competition lets me formulate the programme. It is the only place where a question can be raised before a client raises it. The project awarded here began with such a question: what a suburb could become if the parcel layout were drawn last — after the walk, after the park, after the possibility of change had been built in. No client asks for that; a competition lets you answer it anyway. It is a rare chance to make an attempt: to try a new way of thinking, to test my instincts and my beliefs, and to ask myself what I really want to share.

2ND PRIZE

We participate in the competition to stay informed about the most up-to-date technologies and developments in architecture and to remain actively engaged with the architectural academic community. Although working remotely and not being physically together presented challenges, the experience pushed us to overcome communication barriers, strengthen our collaboration, and develop a more effective way of working together.

I have always been deeply fascinated by nature, its creativity, and human imagination, and I believe they are essential to finding meaning in life. I nurtured this curiosity during my university years while studying architecture, and it is something I definitely do not want to lose as I grow older and become more immersed in professional life. Architecture competitions are a form of continued learning that I intentionally chose after graduation. They give me the opportunity to keep imagining, experimenting, and exploring ideas freely—and to hold on to that sense of curiosity and creativity beyond everyday practice.

HONORABLE MENTION
Competition Rome Rain Rooms