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Sedum Roofed Modular Units Enhancing Urban Living in London

Authors:
Alexander Herrera Rojas, Katarzyna Ziolkowska
Sedum Roofed Modular Units Enhancing Urban Living in London
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Constructed with prefabricated modules and topped with a sedum roof, these residential units integrate green design with urban living in London to create accessible and sustainable housing solutions.
5 key facts about this project
01
Modular units designed for quick assembly and relocation.
02
Sedum roofs incorporated for improved insulation and biodiversity.
03
Balcony and winter garden elements enhance outdoor living.
04
Ground-level commercial space preserved alongside residential units.
05
Public pathways established to promote community interaction.

The design addresses London’s housing shortage with a modular approach that seeks to improve affordability and livability across different urban settings. It is developed in several locations, including mixed-use areas, residential neighborhoods, and along the river. The focus is on providing efficient housing solutions that cater to a variety of socio-economic groups while promoting sustainable practices.

Mixed-Use Context at 1 King's Mall

In the mixed-use area of 1 King's Mall, prefabricated modules are placed above an existing shopping center. This design uses the space efficiently, allowing for ground-level commercial activities to remain while introducing necessary residential areas. The central courtyard serves as an important amenity, encouraging social interaction among residents. This layout fosters connectivity, making it easier for people to access public transport and local services.

Residential Context

In a residential neighborhood, the project replaces an old office building near schools and townhouses with modular units. These new units are designed to connect visually and physically to the surrounding green spaces. Balconies and winter gardens enhance the living experience, while the building’s façade features a push-pull design that integrates outdoor space into home life, aligning with the architectural style of the area.

Riverside Context

Along the riverside, the plan revitalizes a residential estate by reorganizing its layout. The modular arrangement creates a public pathway that runs alongside the river, offering spaces for recreation while protecting existing green areas. This design encourages community use and engagement, as it links housing with the nearby natural environment, enhancing the overall appeal of the location.

The project incorporates materials that support its goals of efficiency and sustainability. External walls include insulation to improve energy performance, while the warm roof features an extensive sedum layer to promote green space. Steel substructures provide the necessary stability for modular designs, complemented by double-glazed full-height windows and doors that maximize natural light and thermal comfort. Glass balustrades on terraces enhance views, connecting indoor living to the outdoor setting while maintaining safety and aesthetics.

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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.

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

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