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Circular Structure Utilizing Charred Timber and Natural Stone for Sustainable Guest Accommodations

Authors:
Muhammad Yazid, Salihu Musa Bulama
Circular Structure Utilizing Charred Timber and Natural Stone for Sustainable Guest Accommodations
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Charred timber cladding and locally sourced stone elements define a circular structure that fosters community interaction while providing a sustainable accommodation option in the heart of Portugal's landscape.
5 key facts about this project
01
Circular design promotes natural ventilation and enhances communal interaction.
02
Charred wooden shingles provide enhanced durability and aesthetic character.
03
Cross-laminated timber panels ensure structural integrity with reduced environmental impact.
04
A central courtyard fosters a connection with nature and encourages social engagement.
05
Local stone elements integrate the building into its surrounding landscape.

**Overview**

The Olive Guest House, located in Lisbon, Portugal, is designed for an international architecture competition. It integrates local culture with modern functionality, focusing on environmental sustainability and guest experience. The project highlights the significance of biophilic design, drawing inspiration from the traditional craft of olive oil production, which promotes a connection between the structure and its natural surroundings while fostering community engagement.

**Spatial Strategy and Community Engagement**

The layout of the guest house features circular forms and open spaces, allowing for multifunctional areas that can accommodate diverse group configurations. Key facilities include a communal dining space, a meditation room, and adaptable halls designed for various gatherings, underscoring a commitment to social interaction among guests. The incorporation of a central courtyard serves as a focal point for community interaction, enhancing the overall guest experience and promoting a sense of belonging.

**Material and Environmental Considerations**

The material selection emphasizes sustainability and local craftsmanship. Predominantly, wood finishes are utilized for walls and ceilings to create a warm, inviting atmosphere while providing insulation. Large glass elements facilitate a connection to the exterior and maximize natural light, contributing to the building's energy efficiency. Textured stone accents enhance both stability and aesthetic appeal, fostering a relationship with the landscape. The construction incorporates eco-friendly roofing materials designed to manage heat reflectivity and rainwater runoff, reinforcing the project's environmental goals.

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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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