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Environmental Sanctuary Featuring Biogenic Limestone and Carbon Reinforced Concrete

Environmental Sanctuary Featuring Biogenic Limestone and Carbon Reinforced Concrete
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Characterized by its central atrium and use of biogenic limestone alongside carbon reinforced concrete, the design creates a functional living space that harmonizes light, air, and environment while prioritizing sustainable living.
5 key facts about this project
01
Central atrium promotes natural ventilation and light throughout the residence.
02
Carbon reinforced concrete ensures durability while maintaining aesthetic appeal.
03
Biogenic limestone integrates local materials for enhanced sustainability.
04
Innovative shading devices optimize energy efficiency in varying climates.
05
Double-height living areas enhance spatial perception and community interaction.

## Project Overview

Located in a dynamic urban-suburban interface, the Sahn House is a three-story residential structure that reinterprets traditional living spaces to enhance both community interaction and individual privacy. The design strategically organizes its areas to foster a balance between shared and private environments. Central to the concept is the integration of a vertical layout that promotes connectivity among inhabitants while maximizing the use of natural light.

### Spatial Strategy and Circulation

The Sahn House features a central atrium that serves as the heart of the design, allowing light to permeate the structure and facilitating passive ventilation for thermal comfort. This atrium not only enhances the aesthetic appeal but also improves the overall functionality of the home. The circulation system, which includes elegantly designed stairways and an elevator, ensures ease of access throughout the three levels, accommodating diverse mobility needs and prioritizing user experience. The organization of different functions across the levels is methodically planned: the ground floor accommodates public areas, including garage services and a lobby; the second level includes communal spaces for living and dining; while the top floor is dedicated to private quarters.

### Material and Environmental Considerations

The selection of materials reflects a focus on sustainability and aesthetic coherence. The use of carbon reinforced concrete, blockwork, and biogenic Aegean limestone cement not only supports structural integrity but also enhances thermal stability and visual appeal. These materials collectively contribute to an environmentally sensitive design, while features such as evaporative cooling systems and rooftop gardens create microclimates that connect occupants with nature. The integration of double-height spaces enriches the interior experience, promoting airflow and natural light, particularly in common areas.

Overall, the Sahn House is characterized by a meticulous approach to materiality and spatial organization, aiming to provide a harmonious living environment that responds to both the needs of its residents and its surrounding context.

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Kingspan MICROHOME 2026: Building Less to Create More

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Competition organisers

The Kingspan MICROHOME 2026 competition invites architects and designers worldwide to rethink small-scale living by creating an off-grid, modular micro dwelling under 25 m². Now in its 11th edition, the contest emphasizes sustainable, innovative, and human-centered design that demonstrates how compact living can have a big impact.

With a €100,000 prize fund, entries will be evaluated for originality, efficiency, and their response to contemporary environmental and social challenges. The competition is open to everyone, with submissions allowed individually or in teams of up to four. Registration closes on 30 September 2026, and winners will be announced on 15 December 2026.

By celebrating creativity within strict limits, MICROHOME 2026 continues to push the boundaries of compact architecture and sustainable living.

MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

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