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Rammed Earth Facade with Geothermal Heating in a Sustainable Residential Design

Rammed Earth Facade with Geothermal Heating in a Sustainable Residential Design
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Combining a rammed earth facade with geothermal heating systems, this residential design prioritizes sustainability and energy efficiency while seamlessly integrating into its natural surroundings.
5 key facts about this project
01
Rammed earth construction enhances thermal performance and durability.
02
Geothermal heating reduces energy consumption for temperature regulation.
03
Sustainable materials include locally sourced elements to minimize transport impacts.
04
A green roof design promotes biodiversity and thermal insulation.
05
Cross-ventilation strategies optimize natural airflow throughout the living spaces.

## Overview

Located in a tranquil area with expansive views, the Apothalassia House is designed with a focus on sustainability and energy efficiency, incorporating various passive design strategies to minimize energy consumption. The project prioritizes ecological materials and local construction practices, aligning its objectives with environmental stewardship and the preservation of the surrounding ecosystem.

## Spatial Strategy and Form

The architectural layout emphasizes functionality while enhancing the relationship between the interior and exterior environments. The building showcases an organic form that flows with the landscape, characterized by fluid lines that facilitate cross-ventilation and maximize natural light. The roof integrates a green component that encourages biodiversity and reinforces thermal insulation.

## Materials and Sustainability Practices

The choice of rammed earth for the building's facades highlights both sustainability and thermal performance, resulting in excellent insulation and a natural aesthetic. Key sustainable practices employed throughout the design include geothermal heating for efficient climate control, a grey water recycling system to conserve water, and rainwater harvesting for non-potable uses. Local materials and labor promote community involvement and minimize transportation emissions, further enhancing the project's environmental impact.

Inside, open living spaces are defined by large windows that invite natural light and offer unobstructed views of the landscape, while gypsum plastering creates a modern yet warm aesthetic that supports indoor climate regulation. The overall design is complemented by furnishings that reflect the architectural ethos, featuring rounded forms and natural materials.

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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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Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
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Eligibility Open to all
Early bird registration deadline 19 November 2025

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