Home Tour: W House II, a single-story house elevating joy above the canopy in Khao Yai, Thailand

Faced with such a paradoxical brief, the architect had to meticulously distil these seemingly conflicting demands. The clients desired a single-storey living arrangement to ensure the family remained intimately connected, without retreating up and down stairs to separate corners of the house. Yet, they refused to compromise on the panoramic, rooftop-level mountain views they had grown to love, whilst simultaneously demanding ample roaming space for their bovine companions. The breakthrough was as audacious as it was elegant: "Why not just take the entire single-storey house and suspend it in mid-air?"

The result is a sculptural mass hoisted seven metres above the earth—a height precisely aligned with the rooftop of their previous residence. By elevating the entirety of the domestic programme, encompassing the living area, bedrooms, and even the swimming pool, the owners are rewarded with breathtaking, elevated vistas. Crucially, it preserves the lateral continuity of a single-storey floor plan, fostering seamless interaction and keeping the family's relationships tightly knit.

This radical spatial strategy also liberates the terrain below, surrendering the footprint back to nature. The vast, open undercroft has been transformed into a shaded, idyllic sanctuary where Khun Nin and Brownie can graze, seek refuge from the midday sun, and wander freely—completely undisturbed by the human activity sequestered on the level above. Flanking this bucolic scene is a magnificent Royal Poinciana tree; as the seasons turn, its canopy erupts into a fiery red display, offering a brilliant juxtaposition against the surrounding verdant landscape.

While visually avant-garde, this conceptual approach is profoundly rooted in the vernacular 'Ruean Thai'—the traditional Thai stilt house. It draws heavily on ancient local wisdom, where homes were elevated to promote cross ventilation and the ground level was dedicated to livestock. Here, that historical precedent is expertly translated through a contemporary modernist lens, manifesting as a modern-day evolution of Thai vernacular architecture tailored flawlessly to a 21st-century lifestyle.

In practical terms, elevating a 300-square-metre concrete volume—along with the sheer weight of a 15-metre swimming pool—seven metres into the sky is an engineering marvel. Had the team relied on a conventional column-and-beam system, the area beneath the house would have been choked by a dense forest of structural pillars. To circumvent this, the architect employed an imposing "Shear Wall" system. Two monolithic concrete planes were engineered to bear the immense load of the entire structure. Furthermore, acknowledging that the plot is intersected by three separate roads, these walls feature sweeping, concave profiles at both the front and rear to accommodate future road access. These sculptural curves also define the boundaries of the undercroft, acting as monumental canvases that capture the dynamic, dappled shadows of the surrounding foliage throughout the day.

To ensure this ground level remained as organic as possible, the architect deliberately eschewed a poured concrete floor. Instead, gravel was introduced, and the landscaping was curated to mimic untamed, naturally occurring wild grasses, fostering a deeply relaxed ambience. Moving inward, the main entrance commands attention with a dramatic, six-metre-high oversized door, inviting guests to pass beneath the suspended swimming pool. An open-tread steel staircase—alongside a discreetly integrated lift—is tucked between the concrete walls, serving as a transitional pathway ascending into the main living quarters.

The ultimate engineering feat lay in executing an 8.5-metre cantilever without resorting to central columns that would otherwise disrupt the upper living space. To achieve this, the design team resurrected a 1960s structural typology: the waffle slab. This highly efficient grid of intersecting concrete beams distributes weight with remarkable structural integrity, allowing the undercroft to remain entirely column-free whilst achieving an extraordinary 12-metre long span.

Rather than concealing this structural necessity, the architect chose to celebrate the waffle slab, transforming it into a defining aesthetic feature that injects incredible depth into the spatial experience. The grid is ingeniously utilised to house concealed architectural lighting. By day, the exposed concrete grid exudes a raw, brutalist power. By night, however, warm light pools within the coffers, completely softening the atmosphere and extending a welcoming glow to anyone arriving at the property.

The moment you go upstairs and cross the threshold into the interior, the spatial narrative shifts dramatically towards something inherently soothing and intimate. The architect orchestrated a deliberate "Yin and Yang" balance to temper the brutalist severity of the exterior concrete, transmuting it into residential warmth. While the tactile, board-marked texture of the raw concrete is permitted to flow inside, its visual weight is elegantly offset by the introduction of light-toned maple wood, celebrated for its distinct grain. This material palette is further punctuated by a bespoke kitchen island carved from Green India marble. Together, these elements curate an atmosphere that is mellow, inviting, and deeply sympathetic to its inhabitants.

The internal programming has been orchestrated with immense care. The bedrooms embrace a highly efficient, compact design ethos, where bespoke joinery merges the desk and bed into a single, cohesive architectural element. Expansive corner glazing frames uninterrupted views of the Khao Yai peaks, whilst the en-suite bathrooms are pierced by strategic skylights, pulling natural daylight deep into the plan to enliven the spaces.

But the heart of this one-space house is the L-shaped hallway that combines the living room, dining room, and kitchen without any dividing walls. The star of the show is a giant L-shaped sofa, designed to be the focal point of the home.

This sofa is special because it's "omnidirectional," meaning it can be used in any direction. The adjustable backrest allows family members to face the dining table to chat with mom while she cooks, turn to watch TV, or look out at the view and the pool. This is a clever design that encourages natural and warm interaction among family members.

Read more: Home tour: a wabi-sabi inspired family home in Johor Bahru

Looking out from the living room onto the balcony, we experience a living space connected to the surrounding nature. The architect paid attention to detail by lowering the level of the balcony, which encloses the house 360 degrees, approximately 40 centimeters below the interior floor level. This small detail allows family members to slide open the glass doors and sit with their legs dangling, enjoying coffee and the breeze from any angle of the house, whether they want to watch the sunrise or the sunset.

The western side of the house features a 15-meter swimming pool elevated parallel to a sky terrace, creating a resort-like atmosphere. This relaxation area allows the homeowner to swim while enjoying breathtaking views of the mountains and treetops in the distance.

However, living on a high, open space inevitably means exposure to sunlight and wind. To ensure this vacation home is truly "comfortable," the architect designed a "double skin" facade system to provide protection for the house.

The outermost layer is an aluminum louvered facade that filters heat from sunlight before it reaches the glass. It can also be folded open and closed for privacy. Next is a layer of large glass doors, and finally, an inner layer of curtains, allowing users to adjust the environment to suit the weather each day as needed.

W House II is a prime example of the "Form Follows Passion" concept, where architectural form is not solely defined by basic function but is shaped by the passion and lifestyle of its inhabitants. Embracing the homeowners' personal vision and transforming it into a tangible building form is what gives this house its unique DNA and simultaneously brings joy to the family.

The family's story continues. We hear the homeowner recently decided to purchase the adjacent plot of land to pursue a new passion: small-scale organic farming. Perhaps in the near future, their new passions will lead to a new architectural masterpiece, which we'll see unveiled once again on this skyline.

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