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Negative Carbon Microhome with Reinforced Concrete Base and Flexible Living Spaces

Authors:
Hector Bellorin, Ivano Aspesi
Negative Carbon Microhome with Reinforced Concrete Base and Flexible Living Spaces

Project in-detail

With a design that prioritizes negative carbon emissions through a rainwater harvesting system and a flexible oval layout, the microhome offers an efficient living space in a rural context.
5 key facts about this project
01
Negative carbon design achieved through renewable energy offsets.
02
Flexible oval layout promotes efficient use of space.
03
Integrated rainwater harvesting system for sustainability.
04
Sliding wall adapts to changing environmental conditions.
05
Removable platform reduces ecological impact and aids relocation.

The Oumuamua microhome is a notable design that emphasizes a strong connection with nature. Located in a rural area, this microhome is built for efficient living through an innovative layout. The concept revolves around an oval interior space that encourages interaction between residents and the surrounding landscape, creating a cozy yet functional environment.

Sustainability Focus

Sustainability plays a key role in the design of the Oumuamua microhome. The approach aims to achieve a negative carbon footprint over time by using renewable energy sources to offset any emissions produced during manufacturing. This commitment not only addresses environmental issues but also creates a living space in tune with its natural setting.

Functional Design Elements

The design includes several functional aspects that enhance daily life. The outer layer of the microhome is engineered to manage rainwater effectively. By changing the shape of traditional slopes, it allows for efficient water circulation. Rainwater is collected and directed to a central point, where it can be reused for household sanitation and gardening needs.

Adaptive Features

The sliding wall serves as a thermal barrier that can adapt to changing temperatures inside and outside the home. This feature helps maintain comfort while promoting energy efficiency. Additionally, the microhome includes totem structures designed for multiple uses. These elements support various everyday activities while providing systems for managing energy and water.

Architectural Integrity

The base of the microhome consists of a removable oval platform, which reduces contact with the ground and allows for easy relocation. This design choice reflects an effort to minimize ecological impact while offering flexible living arrangements. Every detail enhances the connection between the home and its environment, reinforcing a thoughtful approach to modern living.

The careful attention to design features, like the uniquely shaped outer layer and strategic window placements that maximize natural light, emphasizes a blend of functionality and aesthetic appeal.

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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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