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Maximizing Solar Gain Through Sawdust Infill and V-Shape Design in Compact Living

Authors:
Ridvan Kahraman, James Hayward, Sacha Cutajar
Maximizing Solar Gain Through Sawdust Infill and V-Shape Design in Compact Living

Project in-detail

Utilizing sawdust infill for insulation and a V-shape design to optimize solar gain, this microhome addresses urban housing needs by transforming small, underused spaces into efficient living environments.
5 key facts about this project
01
Utilizes sawdust infill to enhance insulation and reduce waste.
02
Features a V-shape design to maximize solar exposure and rainwater collection.
03
Integrates photovoltaic cells for energy independence.
04
Adapts to surrounding building heights for seamless integration.
05
Includes strategically placed light wells for natural illumination.

The SUNSEEKER project serves as a practical response to the challenges of urban land shortages and increasing rents in cities around the world. Located in small, neglected areas between existing buildings, the design focuses on utilizing microhome infills to enhance the urban landscape. By addressing ecological sustainability and social needs, the concept aims to create a harmonious addition to the city environment.

Architecture Concept

At the core of SUNSEEKER is a flexible design that makes use of overlooked spaces. Mirroring how plants grow toward sunlight, the structure adapts its shape to capture solar energy effectively and collect rainwater. This adaptability seeks to redefine how living spaces can be integrated into busy urban areas, allowing for more efficient use of land.

Materiality

The project incorporates sawdust infill, a choice that uses wood processing waste for insulation within the structure. This decision highlights a commitment to sustainability while also working to make the most of available materials. Alongside this, a sandwich panel system provides both strength and flexibility, making the microhome responsive to different settings and conditions.

Facade Composition

SUNSEEKER’s facade features slatted surfaces that create a pattern of light and shadow. This design choice not only enhances the building's appearance but also contributes to the comfort of the interior spaces, allowing for natural light while offering a level of privacy. The adaptable nature of the facade allows the structure to blend with its surroundings, affirming its connection to nearby buildings.

Sustainable Features

The design includes a rainwater collection system and photovoltaic cells, which allow the home to operate independently from city utilities. These features emphasize an approach to living that prioritizes sustainability and self-sufficiency. By combining these elements, SUNSEEKER provides a viable solution for modern urban housing needs without compromising on environmental responsibility.

The slatted facade comes alive throughout the day, as sunlight and shadow dance across its surface. This moment-to-moment change adds a layer of depth to the building, inviting viewers to engage with its evolving character.

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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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