Projected Concrete House

Semarang, Indonesia

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Projected Concrete House

Semarang, Indonesia

Firm

Tamara Wibowo Architects

Type

Residential › Private House

STATUS

Built

YEAR

2023

SIZE

5000 sqft - 10,000 sqft

BUDGET

$500K - 1M

Indonesian practice Tamara Wibowo Architects has completed the Projected Concrete House, a multi-level residence in the Gajahmungkur area of Semarang designed for a young family and their elderly parents. The project is defined by a sequence of protruding concrete volumes that float above a lush courtyard and pool terrace, creating a composition of mass and void that frames everyday life.

Set on a 27-by-17-meter plot in a stepped residential neighborhood, the house sits on the middle of three housing rows–elevated 3 meters above the first row facing the main street. A neighboring lot at the rear rises an additional 5 meters, reinforcing the house’s inward focus and need for layered privacy. The elongated plot runs parallel to the street, giving the house a dominant horizontal presence emphasized by the bold façade. This façade is articulated through three concrete bedroom volumes, their deep, subtly curved timber-lined openings—providing shade, rhythm, and architectural identity.

The site’s topographic condition inspired the architects to create a circulation void anchored by a long timber ramp—an essential request for the aging parents who live in the house. Bathed in natural light from a full-length skylight, the ramp leads gently upward through a tropical garden punctuated by tree ferns, breezeblocks, and wooden slats that provide cross-ventilation and dappled light. More than a means of movement, the ramp offers an experiential transition—a walk that feels airy, calm, and immersed in tropical greenery. Above the ramp, a timber-lined stair floats between the second and third floors like a sculptural thread, reinforcing the home’s vertical spine and organizing principle.

The house unfolds across three floors, each tailored to a specific layer of family life. On the first floor, essential service and support functions are placed alongside private guest and workspaces. A three-car garage provides ample storage, while a home office offers a quiet workspace. A guest bedroom is tucked away to ensure privacy, with service areas like the laundry and staff quarters located behind circulation paths for efficiency without disruption.

The second floor serves as the heart of the home, where shared living spaces are fully integrated with outdoor areas to foster openness and connection. The living room, dining area, and kitchen form a continuous social zone that spills out to a pool terrace and linear garden beyond. A long wooden bench along the grass-lined front acts as both railing and social seating, encouraging spontaneous gathering. Full-height openings throughout the space bring in abundant natural light and ensure cross-ventilation. This level also houses the parents’ suite, located near the communal spaces and accessed via the ramp—providing comfort, dignity, and accessibility within daily family life.

On the third floor, the private quarters for the family are arranged with a balance of retreat and intimacy. The master bedroom anchors one end of the corridor, offering views over the pool terrace. Children’s rooms are linked by a shared bathroom and playroom, encouraging interaction while maintaining personal space. At the center, a cozy family lounge acts as an informal gathering point for quiet evenings. At the far end, an additional guest bedroom provides flexible accommodation while preserving a calm and private atmosphere.

Material-wise, the house is characterized by board-formed concrete walls paired with warm teak wood ceilings and cabinetry. This restrained palette highlights the integrity of each material through its texture and tactility, embodying a refined tropical modernism. The interplay of light, air, and mass makes the Projected Concrete House not only functional but also emotionally resonant—a home that responds sensitively to climate, context, and the complexities of generational living.

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Projected Concrete House

Semarang, Indonesia

Projected Concrete House

Semarang, Indonesia

Product Spec Sheet

Collaborating Firms

Team