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Tree Bark Cladding and Greywater Systems in a Compact Microhome

Authors:
Arnab Ghosh, Douglas Peterson-hui
Tree Bark Cladding and Greywater Systems in a Compact Microhome
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Clad in tree bark and equipped with a greywater collection system, this compact microhome on Salt Spring Island offers a practical solution for affordable living while fostering a strong connection to the natural environment.
5 key facts about this project
01
Clad in tree bark, the exterior enhances integration with the natural environment.
02
Utilizes a greywater collection system to promote sustainable water management.
03
Designed with a sunken living area that encourages social interaction.
04
Includes both formal and informal workspaces to accommodate remote working needs.
05
Elevated on stilts to address the island’s steep terrain while minimizing environmental impact.

The Saltbox microhome is located on Salt Spring Island, between mainland British Columbia and Vancouver Island. It addresses the pressing need for affordable housing in an area that is increasingly popular with tourists. The design prioritizes functionality and sustainability, providing a practical solution for local residents while respecting the natural landscape. The compact square plan allows for energy efficiency and effective use of space.

Architectural Expression

The square layout of the Saltbox enhances spatial efficiency, promoting ease of movement throughout the home. Elevated on stilts, the design adapts to the island’s uneven terrain, minimizing its impact on the environment. This approach results in a straightforward yet effective model for modern living, tailoring itself to the specific requirements of its occupants.

Water Management Strategy

Water management is a significant feature of the Saltbox, especially considering the region's period of drought. The home includes a compost toilet along with systems for greywater and rainwater collection. These features support sustainable resource use, assisting residents in conserving water while enhancing the home's resilience to climatic challenges.

Materiality and Aesthetic Integration

The exterior of the Saltbox is covered in tree bark, allowing it to blend in with the local Douglas Fir forests. This choice not only adds to the structure’s visual character but also reduces waste by utilizing natural materials. The building is further complemented by Kalwall glazing, which provides insulation and allows natural light to fill the interiors. These material choices reflect a commitment to sustainability and create a stronger connection to the surrounding environment.

Functional Spaces

Inside, the layout is carefully designed to support modern work-from-home needs. A formal office area is located beneath the loft, accompanied by an informal desk area above. This setup maximizes usability in a small footprint. A large pivot door opens toward the outdoor space, creating a fluid connection between the inside and outside. This feature enhances the feeling of openness while connecting occupants to nature.

The sunken living room design invites social interaction while maintaining distinct spaces for various activities. This thoughtful arrangement provides a welcoming atmosphere, allowing residents to feel both connected and comfortable within their serene surroundings.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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