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Sustainable Cottage with Scots Pine and Graywater Recycling Surrounded by Reflection Pools

Authors:
Yufei Li, Martha Woolfrey, Luchen Ye
Sustainable Cottage with Scots Pine and Graywater Recycling Surrounded by Reflection Pools
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Constructed using Scots pine and featuring a wind turbine wall for energy efficiency, the cottage integrates reflection pools and a graywater recycling system, providing an eco-friendly residence that fosters artistic expression by the lake.
5 key facts about this project
01
Scots pine sourced locally forms the primary structure.
02
Reflection pools enhance water management and aesthetics.
03
A wind turbine wall supports the cottage's energy needs.
04
Graywater recycling is integrated for sustainable resource use.
05
The roof design modernizes traditional Latvian agricultural forms.

Cernostes Cottage, also known as Painters' Lake House, is situated on the peaceful banks of Cernostes Ezers in Latvia. The design integrates the home with the surrounding landscape, reflecting the traditional wood structures of the area while addressing the needs of contemporary living. The cottage functions as both a residence and a workspace for artistic creation. It encourages a connection with the beautiful scenery and fosters shared experiences among its inhabitants.

Architectural Concept

The design emphasizes the relationship between the home and nature, framing the landscape as an artist’s canvas. The living area is located on the second floor, allowing for ample natural light and scenic views of the lake and farmland. An exterior balcony offers shelter from the wind while providing an outdoor space for enjoyment in warmer months. The roof design takes cues from local agricultural buildings, creating a modern version of the gabled roof that is familiar in the region.

Sustainability Initiatives

A commitment to sustainability is evident throughout Cernostes Cottage. It aims for net-zero energy consumption through features like a wind turbine wall and a heat recovery ventilator. These systems enhance energy efficiency and align with a broader responsibility towards nature. The house also effectively manages water, using a rainwater harvesting system that captures rain from the roof for use in kitchens and bathrooms. This system reduces the demand on local water sources and encourages self-sufficiency.

Materials and Construction

The materials chosen for Cernostes Cottage reflect its focus on sustainability. The main structure is built using Scots pine sourced from Latvia, supporting a stick frame construction method. This choice minimizes carbon emissions while reinforcing local customs. The building’s exterior includes mineral wool insulation to improve thermal performance. This helps the cottage withstand harsh weather conditions while maintaining a comfortable indoor environment throughout the seasons.

Outdoor Integration

The landscaping complements the building, with gardens and reflection pools creating spaces for quiet reflection and connection to nature. These areas enhance the overall living experience and strengthen ties to the environment. The integration of outdoor elements adds beauty to the property and creates a harmonious setting for daily life.

Final design features, such as extended eave overhangs, provide additional shading during hot weather, contributing to the home's comfort and energy efficiency.

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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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Competition organisers

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.

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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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