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Composting Toilet and Rainwater Systems in Compact Living

Author:
Heather Potts
Composting Toilet and Rainwater Systems in Compact Living

Project in-detail

Equipped with a composting toilet and efficient rainwater systems, the design focuses on sustainability and functionality in a compact living structure that meets the needs of modern urban life.
5 key facts about this project
01
Composting toilet system integrated for improved sustainability.
02
Rainwater collection enables efficient water management.
03
Zones designed for specific functions optimize space usage.
04
Maximum natural light achieved through strategic orientation.
05
Outdoor garden space encourages connection with nature.

The Microhome project takes a thoughtful approach to compact living, responding to the challenges of urban environments where space is limited. It focuses on maximizing functionality while prioritizing comfort and sustainability. The design outlines clear divisions between public and private areas, accommodating various daily activities such as work, cooking, sleeping, and relaxation.

Functional Zones

The layout organizes the Microhome into distinct areas that fulfill specific functions. A dedicated work area is included within the overall design, ensuring that residents have a space for productivity. The living and cooking areas are combined to support social interactions, while the sleeping quarters are designed to offer privacy and rest. The incorporation of outdoor gardening space highlights the importance of connecting indoor living with nature.

Natural Light Optimization

Optimizing natural light is a major consideration in the design. The orientation of the Microhome allows for maximum exposure to northern, western, and southern sunlight. This careful arrangement reduces reliance on artificial lighting, enhancing the aesthetic experience of the interior and promoting energy efficiency. Such approaches contribute to a more sustainable and pleasant living environment overall.

Sustainable Water Management

Sustainable water management features prominently in the Microhome's design. Several systems are implemented to ensure efficient use of resources. For instance, a composting toilet serves as a responsible sanitation solution. Additionally, rainwater collection systems capture valuable water, reducing consumption. There is also a specific irrigation zone and a cistern designed to store rainwater for reuse, facilitating the maintenance of the garden and illustrating a commitment to environmental responsibility.

Ventilation and Thermal Comfort

The design pays particular attention to ventilation and thermal stability. Proper airflow is essential for maintaining comfort and air quality. Various strategies are included to enhance thermal stability, which addresses the challenges of different weather conditions. This focus ensures that the living space remains pleasant throughout various seasons of the year.

Each aspect of design blends functionality and sustainability, highlighted by the connection between indoor and outdoor spaces. The result is a living environment that fosters a sense of community while being attuned to the natural world.

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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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