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Rammed Earth Arches and Closed Cell Insulation in a Flexible Microhome

Authors:
Michael Lord, Kelly Bergin
Rammed Earth Arches and Closed Cell Insulation in a Flexible Microhome
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Embedded with rammed earth arches and integrated closed cell insulation, this flexible microhome redefines sustainable living by allowing for customizable design while promoting environmental harmony.
5 key facts about this project
01
Rammed earth arches provide both structural support and thermal insulation.
02
The design allows for easy addition or removal of modular components.
03
Closed cell insulation enhances performance across various climates.
04
Pre-fabrication on-site reduces transportation impact and construction time.
05
A dedicated outdoor deck extends the living area into nature.

The Arch System is a modular microhome kit that emphasizes sustainability and customization. It aims to provide users with the ability to tailor their living spaces to meet personal needs. The design combines elements of traditional architecture with modern methods. The result is a structure that communicates both functionality and aesthetic appeal.

Materials and Construction

Rammed earth arches form the backbone of the Arch System. These arches are made on-site using local resources, connecting the home to its environment. This method is not only durable but also enhances thermal performance—keeping interiors comfortable in various climates. The use of natural materials adds an earthy quality to the structure, grounding it in its landscape.

Modularity and Adaptability

The design features two main structural modules, which can be arranged in different ways. This modularity allows residents to adjust their living spaces based on preferences. Users can easily add or remove arches, promoting flexibility as their needs change over time. The modules are designed to fit standard furniture sizes, ensuring that the living environment remains practical and easy to navigate.

Hidden Systems and Functionality

Key systems such as the electric battery, water tank, and water heater are integrated beneath the wood flooring. This thoughtful approach reduces visual clutter and contributes to an organized interior. The wood flooring itself adds a touch of warmth. Together, these features create a cozy atmosphere that feels homely yet modern.

Outdoor Integration

A pre-fabricated deck extends the living space into the outdoors. This feature allows occupants to enjoy fresh air and natural light, creating a connection with the surrounding area. It encourages outdoor activities and provides additional space for relaxation. By blending indoor and outdoor living, the design enhances the overall quality of life for its residents.

The Arch System reflects a commitment to practical design and environmental responsibility. Its attention to detail—from the adaptive layout to the hidden operational systems—demonstrates a thoughtful understanding of contemporary housing needs. Each aspect contributes to a functional living space that remains inviting and connected to nature.

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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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