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Composting System and Sips Framework for Compact Urban Living

Author:
Andrew Shaper
Composting System and Sips Framework for Compact Urban Living
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Utilizing structural insulated panels and a composting system, this compact microhome in Kibera offers a sustainable living solution designed to enhance safety and community interaction amidst urban challenges.
5 key facts about this project
01
Utilizes structural insulated panels for energy efficiency.
02
Incorporates a rainwater collection system for sustainable water management.
03
Features multiple entry points for enhanced security and privacy.
04
Includes a front shop area to support local economic activity.
05
Integrates an aerobic composting system for waste management.

The Kibera Microhome is located in Kibera, Nairobi, one of the largest urban slums in Africa. Designed to confront the challenges of high density and scarce resources, the microhome focuses on safe and functional living. It presents a thoughtful concept that maximizes space in just 25 square meters, making efficient use of available resources and fostering community interaction among residents.

Spatial Efficiency and Flexibility

The layout of the microhome is carefully structured to optimize both private and shared spaces. This design allows residents to adapt their environment to suit their daily needs. With multiple entry points, security is enhanced, creating a buffer against external threats. This arrangement encourages privacy for individuals while simultaneously building a sense of community among the occupants.

Integration of Outdoor Spaces

Outdoor areas are an essential part of the microhome’s design. They provide spaces for gardening, cooking, and socializing, allowing residents to extend their living space outside. This connection to nature improves living conditions and encourages interaction with neighbors. The inclusion of a small shop at the front allows residents to engage in commerce, providing income opportunities and supporting the local economy, which is vital in an area facing economic challenges.

Sustainable Systems and Materials

The project utilizes concrete blocks for the foundation, ensuring stability in a challenging environment. Structural insulated panels are used to create the building's thermal envelope, promoting energy efficiency vital for off-grid living. Natural light and ventilation are maximized through a skillion roof and strategically placed louvre windows, contributing to a comfortable and livable indoor environment. Additionally, rainwater collection and solar panels enhance sustainability, allowing residents to manage resources effectively.

Innovative Waste Management

The design also includes an aerobic composting system to handle waste. This feature converts refuse into nutrient-rich water suitable for gardening. By managing waste in this way, the microhome addresses sanitation and promotes a sustainable lifestyle. Growing food on-site not only supports food security but also helps to foster a sense of self-sufficiency among residents.

The Kibera Microhome combines these elements to create a living space that meets essential needs while enriching the daily lives of its occupants. It serves as a practical model for resilient living in difficult urban conditions.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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