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Vertical Living Space Incorporating Prefabricated Steel and Sustainable Green Roofs

Author:
Dane Bunton
Vertical Living Space Incorporating Prefabricated Steel and Sustainable Green Roofs
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Elevated prefabricated units with integrated solar technology and verdant community gardens transform underutilized rooftops into sustainable living spaces in the heart of San Francisco.
5 key facts about this project
01
Elevated modular units provide maximum use of rooftop space while maintaining structural integrity.
02
Integrated solar panels enhance energy efficiency and reduce carbon footprint.
03
Community gardens cultivate local food sources, promoting sustainability and biodiversity.
04
Rainwater harvesting systems ensure resource conservation and support green infrastructure.
05
Vertical pathways facilitate pedestrian circulation and community interaction among residents.

The Upper Lands project presents a practical response to urban housing needs in San Francisco by transforming underutilized rooftop spaces into viable residential and communal areas. The architectural design seeks to address both the growing demand for housing and the necessity for sustainable living environments. By elevating residential units onto rooftops, the project maximizes available urban space while promoting community engagement and environmental responsibility.

**Innovation in Urban Housing Solutions**

One of the defining aspects of the Upper Lands project is its innovative approach to converting rooftops into functional living areas. The design incorporates modular housing units that can be prefabricated and assembled efficiently on-site. This method not only accelerates construction timelines but also provides flexibility in adapting to various rooftops across the city. The project aims to generate approximately 31,155 new housing units while integrating community amenities such as shared gardens, kitchens, and recreational spaces. This focus on community-driven design enhances social interaction and fosters a sense of belonging among residents.

Moreover, the project employs a diverse material palette, including reinforced concrete for structural integrity, steel for its framework, and extensive glass elements to ensure maximum natural light. Sustainable materials such as solar panels and metal grids support efficient energy usage and promote green initiatives. These choices reflect a commitment to durability and environmental stewardship, setting the project apart in a city known for its progressive values.

**Community-Centric Design and Sustainability**

The Upper Lands project emphasizes community as a core principle by incorporating communal gardens and accessible green spaces. Residents are encouraged to participate in urban agriculture, reinforcing the concept of sustainability through local food production and biodiversity. The design features rainwater harvesting systems that allow for the reuse of water, further minimizing resources while providing essential services to both the community and the environment.

The unique elevation of living spaces fosters vertical connectivity in urban settings. Pathways linking residential units create an interactive network, promoting pedestrian circulation and enhancing community relationships. This uniquely layered design approach transforms rooftops from simple structures into vibrant environments for living, leisure, and social engagement.

The integration of solar energy technology supports the project's goal of minimizing environmental impact while ensuring affordability. By harnessing renewable energy, the Upper Lands project demonstrates how contemporary architecture can align with sustainable practices to create functional urban living spaces.

The Upper Lands project represents a forward-thinking solution to urban density challenges. It exemplifies how architectural design can rethink the use of space to create more livable environments in urban contexts. To gain a deeper understanding of the architectural plans, sections, and innovative ideas behind this project, readers are encouraged to explore the project presentation further.

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100,000€ Prize / 2026

The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 19 November 2025

Open architecture competitions

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

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Early bird registration deadline 26 February 2026

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