Dapples Building Elevation by LOCALARCHITECTURE

Urban Densification Through Sustainable Architecture

The Dapples Building Elevation by LOCALARCHITECTURE in Lausanne addresses one of the most pressing urban challenges today—densifying cities without compromising quality of life. Instead of relying solely on quantitative expansion, the project rethinks how existing structures can evolve sustainably, offering both architectural innovation and community value.

This extension project demonstrates how wooden construction can transform outdated mid-century buildings into modern, eco-friendly housing solutions that seamlessly integrate with their urban context.

A Sensitive Transformation of a 1960s Building

The project takes a late 1960s residential building and expands it with two additional levels on the roof, without disrupting the already inhabited lower floors. By removing the concrete screed and waterproofing system, architects created the foundation for a new glued-laminated timber frame.

The choice of wood is intentional—lightweight, sustainable, and adaptable, minimizing the structural overload on the original building. This innovative approach allowed for 10 new apartments to be added efficiently, demonstrating how urban densification can be achieved through sustainable building practices.

Wooden Construction for Performance and Sustainability

Every aspect of the elevation is designed with timber construction. From stairwells and elevator shafts to interior partitions, wood replaces conventional concrete elements. This approach not only reduces carbon impact but also meets essential sound insulation and fire safety standards.

Each apartment is designed with a loggia balcony and large glazed openings, ensuring natural light and creating a fluid connection between indoor and outdoor living.

Architectural Dialogue with the City

To integrate harmoniously into Lausanne’s historic neighborhood, the project adopts a broken gabled roof inspired by the traditional Mansard roofs of surrounding buildings. This ensures that while the building is modern in construction and performance, it respects the architectural language of its context.

The result is a fusion of heritage and innovation, where urban density, sustainability, and design excellence converge.

All the photographs are works of Michel Bonvin