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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

Project in-detail

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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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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