Lacaton & Vassal: Expanding the Interior, Not the Footprint

Anne Lacaton and Jean-Philippe Vassal have consistently advocated for renovation over demolition, an approach that prioritizes existing structures and their inhabitants. Their work demonstrates that radical improvements in living quality can be achieved through intelligent additions, particularly focusing on expanding the interior experience through space and light. This philosophy is evident in their Grand Parc Bordeaux project, where 530 social housing units were transformed by introducing generous winter gardens and balconies.

In Short

• Lacaton & Vassal prioritize renovation and transformation over demolition of existing buildings.
• Their approach adds generous space, often in the form of winter gardens and balconies, to improve living conditions.
• The Grand Parc Bordeaux project exemplifies their method of expanding interior volume and access to natural light.
• This strategy offers an economical and sustainable alternative to new construction or complete rebuilding.

Picture Notes

1. Deepened Threshold — A sliding glass panel marks the boundary between the original living room and the newly enclosed winter garden, offering a flexible extension of interior space. 2. Luminous Expansion — The added depth of the winter garden creates a transitional zone filled with natural light, filtering into the main apartment volume and connecting residents to the outdoors. 3. Material Continuity — Simple, robust materials like concrete and unpainted wood frame the new additions, maintaining a visual and tactile relationship with the existing structure while introducing warmth. 4. Operable Facade — Large, sliding polycarbonate panels allow residents to control ventilation and solar gain, transforming the winter garden from an enclosed space to an open balcony. 5. Integrated Planting — Small planters are often incorporated into the winter garden design, blurring the lines between interior and exterior and allowing for personal green spaces.

A New Generosity: Grand Parc Bordeaux

At the heart of Lacaton & Vassal's practice is the belief that more space, more light, and more flexibility contribute directly to a better quality of life. The Grand Parc Bordeaux project, completed in 2017, is a prime illustration. This transformation of three social housing blocks from the 1960s, originally containing 530 apartments, avoided demolition entirely. Instead, the architects added prefabricated modules to the existing facades, creating spacious winter gardens and balconies for each dwelling. These additions expanded the living area by approximately 30 percent, enhancing thermal performance and providing residents with versatile, adaptable spaces. The total cost of this renovation was significantly less than new construction.

Rethinking the Interior Landscape

Lacaton & Vassal's interior interventions are not merely about increasing square footage; they are about redefining the domestic landscape. The winter garden, often clad in polycarbonate or glass, becomes a climatic buffer and a flexible extension of the living room. It can be fully opened to the elements, creating a true balcony, or enclosed for protection against the cold, functioning as an additional room. This adaptability is key to their design philosophy, allowing residents to tailor their environment to their needs and the seasons. The focus remains on simple, durable materials and a light-filled ambiance, ensuring that the new spaces are both practical and inviting.

Color and Context: Integrating Current Palettes

The interior architecture of Lacaton & Vassal generally favors a neutral, material-driven palette, emphasizing light, structure, and the external environment. This approach allows the inhabitants to introduce color through personal belongings, furniture, and planting. If we consider the Pantone Colour of the Year 2024, Peach Fuzz, a soft, velvety peach tone, its integration into such spaces would likely be through ephemeral elements rather than fixed architectural finishes. Against the backdrop of raw concrete, timber, or white walls, Peach Fuzz could appear in textiles—cushions, throws, curtains—or in decorative objects, bringing a gentle warmth without dominating the architectural integrity. This mutable application allows for contemporary trends to integrate subtly, respecting the enduring quality of the primary materials. Ruta 40 Retreat: Color as Structure in Patagonian Bauhaus-Era Châteaux discusses how color can be a structural element, but in Lacaton & Vassal's work, color is often invited as a secondary layer, a personal expression within a robust framework.

The Economy of Generosity

The economic viability of Lacaton & Vassal's work is a fundamental aspect of their practice. Their projects demonstrate that expanding and improving existing housing can be more cost-effective and environmentally sound than building anew. By retaining the core structure and intelligently adding volume, they reduce material consumption and construction waste. This economic efficiency translates directly into a more generous living space for residents, offering light-filled, flexible rooms that adapt to daily life. Their designs prove that sustainability and spatial quality do not require exorbitant budgets, but rather an inventive approach to what already exists.

ARCHITECTT Note

Lacaton & Vassal's commitment to the existing building stock, and their belief in the transformative power of light and space, offers a profound lesson in responsible design. An intelligent renovation can unlock unexpected spatial and thermal efficiencies, demonstrating that the most sustainable building is often the one that already stands. Test how a simple, well-proportioned added volume can dramatically alter the perception and function of an existing room.

Closing

The work of Anne Lacaton and Jean-Philippe Vassal stands as a powerful argument against unnecessary demolition. Their projects, particularly Grand Parc Bordeaux, illustrate how thoughtful, cost-effective additions can breathe new life into aging structures, delivering improved living conditions and environmental performance. By challenging conventional notions of urban renewal, they offer a model for a more sustainable and humane architecture.

Their approach is not about grand gestures but about practical elegance and a deep respect for both the existing fabric of the city and the needs of its inhabitants. It underlines that architectural value can be found in the intelligent enhancement of the ordinary, creating spaces that are both economically viable and spatially rich.

FAQ

How do Lacaton & Vassal approach existing buildings?

Lacaton & Vassal prioritize the transformation and improvement of existing buildings rather than demolition. They aim to add generous space, light, and flexibility to enhance living conditions for residents.

What is the Grand Parc Bordeaux project known for?

The Grand Parc Bordeaux project is renowned for its transformation of 530 social housing units. Lacaton & Vassal added winter gardens and balconies to each apartment, significantly increasing living space and improving thermal performance without demolition.

What is a