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Trombe Walls and Vertical Orchards in Sustainable Community Housing

Authors:
Didac Guxens, Pau Menendez serra
Trombe Walls and Vertical Orchards in Sustainable Community Housing

Project in-detail

Utilizing Trombe walls and vertical orchards, the design integrates renewable energy strategies and urban agriculture to create a sustainable housing solution for displaced families.
5 key facts about this project
01
Utilizes Trombe walls for passive solar heating.
02
Incorporates vertical orchards for urban food production.
03
Designed for rapid assembly to address urgent housing needs.
04
Features corrugated polycarbonate for natural lighting and insulation.
05
Integrates rainwater collection and greywater reuse systems.

TERRA NULLIUS is focused on the urgent issue of providing housing for people who have been displaced by conflict and emergencies. Set in locations like Germany and Uganda, the project aims to create adaptable and cost-effective homes for families of different sizes, specifically two to four members. The design promotes a sense of ownership and self-management, allowing those who live in these homes to shape their own environments and improve their daily lives.

Adaptive Strategies

The project uses a range of architectural strategies that emphasize flexibility and sustainability. Climate adaptability is a key element; bioclimatic principles are applied to ensure that each housing unit functions well in various environments. The layout can maximize natural light and airflow, reducing the need for artificial heating or cooling.

Flexible Configuration

TERRA NULLIUS offers options for different configurations, enabling the housing units to be arranged individually or in clusters according to site conditions. This ability to adapt allows the design to meet the needs of varying population densities, making it easier to respond to shifts in where people live. The arrangement of the homes also encourages a sense of community among residents, making it easier for them to connect.

Material Considerations

The choice of materials is also essential to the project. Sustainable materials are selected to enhance the living experience. Solar panels are included to provide energy independence, while corrugated polycarbonate is used for the facade, allowing light to enter the interiors while still offering protection. Pressure-treated plywood is chosen for its strength, and insulation elements are used to improve the energy efficiency of each unit.

Design Features

Several innovative features are part of the design. The Trombe wall concept is used to capture solar energy for passive heating, making homes more comfortable in cooler weather. The vertical orchard design allows residents to grow their own food, promoting self-sufficiency in urban environments. Additionally, rainwater collection and greywater treatment systems help conserve resources and support environmental responsibility.

These design elements work together to create homes that meet both immediate needs and long-term sustainability goals. They aim to enhance the quality of life for individuals and families facing displacement, helping them find stability and community in challenging circumstances.

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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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