The “Sienna” Project by BillionBricks is a prominent example of a modern sustainable architecture approach, designed with a focus on quality of life, energy efficiency, and climate responsiveness. With its contemporary form and intelligent spatial organization, the project demonstrates how sustainability concepts can be implemented beyond mere rhetoric, at the real scale of residential architecture, serving as a replicable model for sustainable duplex villa design.
In this project, the duplex layout is designed to clearly distinguish between public and private spaces, while maintaining visual and spatial connectivity between the floors. The use of deep openings, terraces, and semi-open spaces enhances natural ventilation and daylighting, minimizing reliance on mechanical systems—a fundamental principle of sustainable architecture.
The materials used in the Sienna Project were carefully selected based on their life cycle. The combination of local materials, shaded surfaces, and simple yet precise detailing not only reduces environmental impact but also enriches the visual identity of the project. This responsible approach to materials makes the project an inspiring example in the field of sustainable duplex villa design.
One of the key strengths of this design is its simultaneous attention to social and environmental sustainability. Flexible interior spaces allow adaptation to the changing needs of residents, while the seamless connection between indoor areas and the surrounding green landscape enhances a sense of belonging and tranquility. These features demonstrate that sustainability extends beyond energy reduction to encompass the quality of the living experience.
The Sienna Project can be regarded as a successful example of the convergence of contemporary design, climate-responsive performance, and environmental responsibility. It clearly demonstrates that sustainable duplex villa design can simultaneously meet aesthetic, functional, and ecological requirements, guiding the future of residential architecture toward smarter and more sustainable solutions.