Tucked away atop a five-story apartment complex in Bangkok’s bustling Ladprao district, the Rooftop House in Bangkok—named The HACHI Skyscape—is a hidden architectural gem designed by WARchitect. Invisible from street view, this 150-square-meter private residence was conceived as a sanctuary floating in the sky, offering a seamless blend of urban minimalism and natural warmth.
Originally an open rooftop used only to house water tanks, the sixth floor presented a unique opportunity for transformation. The owner envisioned a personal retreat—detached from the city yet deeply embedded in its context. Unlike traditional homes with gardens and yard space, this rooftop house redefines its environment: concrete replaces soil, and surrounding trees are substituted by towering urban silhouettes.
Positioned 15 meters above ground level, the house has only one visible elevation—the front. To avoid clashing visually with the apartment below, the structure is meticulously hidden from public view, creating the illusion of an unbuilt space hovering gently above the cityscape.
The guiding principle behind the design was subtlety—creating a home that doesn’t overtly declare its presence. WARchitect approached this challenge by crafting a form that feels more like an atmosphere than a building. Walls and ceilings are intentionally thin and understated. Drop ceilings and integrated lighting are carefully designed to maintain visual continuity, eliminating the bulk usually seen in typical structures.
Despite its architectural complexity, the design reads as minimal and monolithic. The use of clean lines, floating planes, and subdued details makes the house appear as if it emerged organically from the rooftop itself—an intentional ambiguity that blurs the line between architecture and sky.
Intended as a private dwelling, the Rooftop House in Bangkok was designed with simplicity and intimacy in mind. The layout follows a six-grid format, mirroring the columnar grid of the building below. Each grid defines a specific zone:
Front Grids: Dining area, living room, and bedroom—each enjoying panoramic city views through expansive sliding glass doors.
Rear Grids: Bathroom, open-air courtyard, and kitchen—all interconnected visually and spatially.
One of the home’s most compelling features is the central courtyard—a core element that brings natural light and air to the entire space, visible from every room.
In a nod to sustainability and personal sentiment, the owner repurposed leftover Balau wood (ironwood) for the house’s cladding. While the wood bears imperfections—cracks, knots, varied tones—it was intentionally left untreated, showcasing its organic beauty. This rawness juxtaposes with the ethereal quality of the structure, grounding the home in warmth and authenticity.
The final composition is a serene contrast of materials: the earthy texture of aged wood set against the open, infinite blue of the Bangkok sky.
For more about innovative rooftop architecture and Thai modernist design, explore WARchitect’s projects and follow their latest works reshaping urban living.
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