Walnut House in Ehden: A Contextual Architecture Extension Rooted in Landscape and Heritage

Located in the historic village of Ehden, Walnut House by platau is a carefully designed residential extension that responds to its natural slope, cultural context, and architectural heritage. This 150 m² project, completed in 2018, exemplifies contextual architecture, adaptive residential design, and sustainable hillside construction.

Site Context and Architectural Strategy

Set within a terrain defined by winding stairs, canals, and dense walnut trees, the project preserves the vernacular urban morphology of Ehden. Positioned midway along a historic stairway connecting two roads, the house integrates seamlessly into its surroundings, maintaining access routes and spatial continuity.

A mature walnut tree becomes the central organizing element, acting as a natural anchor that connects the existing stone structures with the new architectural intervention. This sensitive integration highlights key principles of landscape-responsive architecture and heritage preservation.

Spatial Design and Concept Development

The extension is conceived as a series of cascading levels that follow the natural slope of the site. A defining feature is the floating sloped roof, which unifies the old and new volumes while creating layered spaces beneath it.

This architectural gesture establishes a dynamic spatial hierarchy, forming courtyards, terraces, and transitional zones that enhance both visual and functional connectivity. The roof opens around the walnut tree, generating a central courtyard that acts as a climatic and social core of the house.

Indoor-Outdoor Connectivity and Living Experience

Walnut House emphasizes indoor-outdoor living, a key trend in contemporary residential architecture. Open-air terraces extend southward, framing panoramic views while enhancing spatial fluidity.

Large glazed facades on the east, west, and north sides dissolve boundaries between interior and exterior, fostering a strong relationship with nature. This approach aligns with biophilic design principles, promoting natural light, ventilation, and occupant well-being.

Environmental Design and Passive Strategies

The sloped roof is not only a formal element but also a passive environmental regulator. Its orientation minimizes solar heat gain by shading interiors from harsh southern sunlight, while strategically placed openings allow controlled daylight penetration.

The stepped massing, combined with courtyards and terraces, facilitates cross ventilation, ensuring thermal comfort across both levels. These strategies reflect sustainable architecture practices tailored to the Mediterranean climate.

Materiality and Construction Approach

Material selection reinforces the building’s connection to its context. The lower volume is clad in local white stone, creating a monolithic base that blends with the surrounding village palette.

In contrast, the roof is constructed using red brick, while interiors feature wooden ceiling strips that provide warmth and continuity. Internal glazed partitions subtly separate structural elements, enhancing spatial clarity and light distribution.

Conclusion: A Dialogue Between Nature, Heritage, and Modern Living

Walnut House integrates hillside architecture, terraces, and passive design, blending heritage, landscape, and contemporary living through contextual, sustainable design strategies.Walnut House stands as a compelling example of modern residential extension design that respects historical context while introducing contemporary spatial innovation. Through its integration of landscape, climate responsiveness, and material authenticity, the project demonstrates how architecture can mediate between past and present, nature and habitation.

All photographs are works of  Wissam Chaaya