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Cross-Laminated Timber House with Solar Greenhouse Overlooking the Lake

Authors:
Federica Accornero, Martina Battisti, Gianluca Arduino, Leonardo Dimaria
Cross-Laminated Timber House with Solar Greenhouse Overlooking the Lake
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A solar greenhouse integrates with a cross-laminated timber house, providing flexible living spaces and an art workshop that seamlessly connects to the serene lakeside environment.
5 key facts about this project
01
A solar greenhouse acts as a communal space and captures winter sunlight.
02
Cross-laminated timber panels provide structural integrity and promote sustainability.
03
Glazed walls enhance natural light and connect interiors visually with the lake.
04
Flexible workspaces in the art workshop allow for both collaboration and privacy.
05
Protected basements accommodate local bat habitats, supporting biodiversity.

The redevelopment of a lakeside site focuses on creating a painters' house and workshop that harmonize with the natural surroundings while addressing user needs. This project retains the existing structures’ footprints, which will be demolished and replaced by new buildings. The design concept emphasizes lake views and integrates functional spaces to enhance the overall experience.

Design Concept

The design prioritizes several essential elements: respect for the natural environment, an emphasis on views of the lake, the use of renewable energy, and the provision of flexible living and working arrangements. A walkway connects the new structures, providing easy access to the lake while considering local wildlife, such as having protected areas in the basements for bat populations. This pathway not only links the project site to the main road but also ensures year-round accessibility.

Spatial Organization

The layout of the painters' house consists of two apartments, each with two bedrooms located on the ground floor. The upper level is dedicated to living and kitchen spaces, designed to maximize the experience of lake views. A communal area sits between the two residences, surrounded by large glazed walls that allow sunlight to enter, turning it into a usable solar greenhouse during the winter months.

Workshop Integration

The design of the painters' workshop centers on flexibility, accommodating the diverse needs of the artists. Adaptable spaces within the workshop can be configured for communal events or separated into smaller rooms for individual projects through movable curtains. This versatility allows for both social interaction among artists and spaces for focused work.

Materiality and Sustainability

Drawing elements from Latvian vernacular architecture, the design features ground floor cladding that resembles traditional stone basements, while the upper portions incorporate modern wooden cladding. The main structure utilizes laminated wood and cross-laminated timber walls. The roof is made of sheet metal, contributing to the durability of the buildings. Renewable energy systems, including wind turbines, are included, emphasizing a commitment to sustainability and enhancing the connection to the surrounding environment.

Large glazed walls in the communal area serve practical purposes while providing abundant natural light. This design decision enhances the indoor experience, allowing occupants to engage with the seasonal changes outside and the calming presence of the lake.

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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.

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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