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Repurposed Train Cars Enhanced With Thermal Insulation for Sustainable Underground Living

Author:
Alvaro Villacis
Repurposed Train Cars Enhanced With Thermal Insulation for Sustainable Underground Living

Project in-detail

Repurposed train cars, equipped with thermal insulation and modular living units, redefine underground housing by creating efficient, community-focused spaces in an underutilized urban environment.
5 key facts about this project
01
Repurposes existing train cars as modular living units.
02
Incorporates a unique 4D addressing system for flexible navigation.
03
Utilizes sustainable thermal insulation for energy efficiency.
04
Features communal kitchens to foster resident interaction.
05
Integrates subterranean spaces to maximize land use in the city.
This architectural project focuses on the transformation of London's underground system to address the pressing housing crisis in an urban environment. By utilizing underused train cars and the unique spatial configurations of the subterranean railway system, the project presents a practical and innovative solution for affordable housing. The design reimagines conventional residential spaces by integrating living units within repurposed infrastructure, thus enhancing urban density while promoting sustainability.

The function of this project revolves around providing efficient housing solutions in a metropolitan context characterized by limited land availability. The design is centered around creating modular living environments, complete with essential amenities and communal facilities that encourage social interaction among residents. Each unit features private sleeping areas and access to shared kitchens and living spaces. This approach fosters a sense of community, which is often lacking in traditional high-density living arrangements.

The modular design is a distinguishing element of this project. Each living unit is constructed to fit within the existing dimensions of train cars, optimizing available space without compromising resident comfort. The strategic use of materials such as steel frames and insulated panels ensures structural integrity and thermal efficiency while maintaining a lightweight aesthetic. These choices emphasize both durability and ease of maintenance, essential for long-term sustainability.

The integration of communal spaces represents another unique aspect of the design. By including shared kitchens and co-working areas, the project enhances the communal experience of urban living. This design encourages social connections and supports a collaborative atmosphere, aligning with contemporary trends towards community-oriented living.

In addition, the project employs a novel ‘4D addressing’ system. This system adapts to the dynamic nature of moving train-based homes, allowing residents to navigate their daily lives flexibly. The introduction of this addressing methodology challenges traditional notions of home and place, providing innovative solutions to urban living dilemmas.

For those interested in detailed architectural insights, the project presentation includes comprehensive architectural plans, sections, and designs that illustrate the functionality and aesthetic considerations behind each element. By exploring these materials, stakeholders can gain a complete understanding of the architectural ideas that guided this transformative project in London's underground.
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MICROHOME
MICROHOME
100,000 € Prize Fund / Kingpsan Edition #10
Kinderspace
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Architecture for Children’s Development #3
Buildner's Unbuilt Award 2025
Buildner's Unbuilt Award 2025
100,000€ Prize / 2025

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

Competition organisers

The 10th edition of the MICROHOME architecture competition invites architects and designers from around the world to explore the possibilities of compact, sustainable living. Hosted by Buildner in collaboration with Kingspan and Hapi Homes, this special edition challenges participants to design an off-grid, modular microhome for a young professional couple, with a maximum floor area of 25 m². Designs should prioritize innovation, efficiency, and real-world feasibility. 

A total prize fund of 100,000 € will be awarded, including three main prizes, the Kingspan Award, and the Hapi Homes Award, which will grant 15,000 € and lead to the construction of the selected design. The final registration deadline is September 25, 2025, and winners will be announced on Decebmer 9, 2025. For full competition details and submission guidelines, visit microhome.info.

Microhome

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € PRIZE FUND / KINGPSAN EDITION #10 IDEAS COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Early bird registration deadline 22 May 2025
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