Sustainable Mountain Architecture | Modern Vietnamese Home | Nature-Inspired Design

Nestled on a steep mountain slope overlooking a breathtaking valley, Ajisai Hill House by Idee Architects is an architectural masterpiece that seamlessly integrates with its natural surroundings. Situated in Vietnam, this 650-square-meter residence is designed to provide a tranquil retreat while embracing the beauty of the Tam Dao Mountain range.

Designed by lead architect Tran Ngoc Linh, the home is built with a focus on sustainability, functional aesthetics, and a harmonious relationship with nature. The design team has thoughtfully addressed the challenges of the steep terrain while ensuring that the house provides an unobstructed view of the golf course and lush valleys below.

Site and Design Challenges

The 1000-square-meter plot presented unique challenges due to its high elevation and sloping landscape. The design solution revolves around creating an open, nature-oriented living space that maintains a sense of privacy while making full use of the spectacular vistas. The structure is divided into two main sections:

• Upper Block: Located at the highest point, this section houses the primary living spaces, offering abundant natural light and ventilation.
• Lower Block: Includes auxiliary functions such as a garage and service areas, serving as the primary access point from the road.

To bridge the height difference efficiently, the architects incorporated a dedicated elevator block that connects the lower level to the main house via a steel bridge. This carefully planned circulation route takes residents on a journey through a garden, swimming pool, and front yard before arriving at the main entrance.

Material Selection & Structural Approach

The residence is constructed using a steel frame, finished with natural stone and wood, ensuring durability against Vietnam’s fluctuating climate. The use of wooden columns and wide overhangs reflects traditional Vietnamese architectural elements, creating a warm and inviting atmosphere while enhancing passive cooling and cross-ventilation.

The central axis of circulation harmoniously connects the front and rear yards, allowing an uninterrupted flow of movement while providing privacy for each living space. The layered spatial arrangement offers different perspectives as one moves through the house, with each level revealing new views of the surrounding landscape.

Seamless Indoor-Outdoor Integration

A defining feature of the Ajisai Hill House is its borderless connection with nature. The architectural layout incorporates two internal gardens, extending greenery into the heart of the home. These gardens enhance the biophilic experience, allowing the residents to enjoy natural light, fresh air, and scenic views from within their living spaces.

The roof of the garage block is repurposed into a flower garden, where the homeowner cultivates Hydrangeas—a beloved flower species that adds a vibrant touch to the lush environment. A staircase and bridge adjacent to this garden provide an elevated viewing experience, allowing visitors to admire the carefully curated landscape from different vantage points.

Functional and Climatic Adaptability

The square-shaped layout with elongated facades maximizes exposure to natural light while maintaining thermal comfort. Large overhanging roofs and spacious balconies function as passive shading devices, reducing direct heat gain and improving natural airflow. The home’s central void is a key design feature that enhances ventilation, ensuring that indoor temperatures remain pleasant throughout the year.

From an aerial perspective, the house’s modular blocks are clearly defined yet connected through a unified architectural axis. This thoughtful planning enhances structural stability, ensuring that each functional zone is optimized for both aesthetics and comfort.

Ajisai Hill House by Idee Architects is a testament to modern Vietnamese architecture, balancing contemporary design principles with traditional influences and sustainable solutions. The residence provides an immersive living experience where architecture and nature exist in perfect harmony. By skillfully integrating biophilic design, efficient spatial planning, and environmentally conscious materials, the project sets a benchmark for future mountain residences.

All Photographs are works of Trieu Chien