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Modular Rooftop Living Integrating Utility Hubs in Southbank

Authors:
Stephen Sainsbury, Charles Whittington
Modular Rooftop Living Integrating Utility Hubs in Southbank

Project in-detail

Rooftop modular units integrate utility hubs within the former IBM Building in Southbank, addressing urban housing shortages while enhancing community connectivity.
5 key facts about this project
01
Rooftop housing utilizes the existing structure of the former IBM Building.
02
Modular units are designed to adapt to various site-specific constraints.
03
Community-oriented spaces promote interaction among residents.
04
Self-contained utility hubs support off-grid living options.
05
Large openings enhance natural light and ventilation in living areas.

The design focuses on addressing the housing crisis in Central London by utilizing existing urban structures for new residential solutions. Located in Southbank, the former IBM Building was designed by Denys Lasdun. It features strong flat roofs which are well-suited for the proposed modular housing units. The concept aims to raise living spaces, directly responding to the issues of land availability and affordability in the city.

Modular Housing System

A modular housing system is central to the design. It can adapt to the unique dimensions and limits of the existing building, which is crucial in creating solutions that can meet the different needs of the community. The design ensures that the structures are lightweight to avoid overloading the original building, emphasizing safety and stability throughout the project.

Community Integration

Community engagement is a significant aspect of the plan, which includes both private and communal outdoor spaces to enhance interactions among residents. The design allocates areas for shared green spaces, promoting a feeling of belonging while accommodating a high density of living units. This approach recognizes the value of quality outdoor areas in urban living environments.

Utility Infrastructure

The proposal incorporates self-contained utility hubs to provide essential services for residents. This addition allows for the possibility of off-grid living, demonstrating a commitment to sustainability and practical solutions. Such infrastructure supports the daily needs of the community, making it easier for residents to manage their living conditions without heavy reliance on outside resources.

Natural Light and Ventilation

Another focus of the design is to maximize natural light and ventilation within the modular units. Large openings are used to enhance daylight and airflow, contributing to energy efficiency and improved living conditions. The careful integration of these features aligns with modern standards of sustainability while ensuring that the modular units remain functional and comfortable. By utilizing the existing structural elements of the IBM Building, the design creates living spaces that engage with the surrounding urban environment.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

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
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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