Atelier Extension in Tomigusuku by Studio Cochi Architects: A Contemporary Hinpun in Okinawa

The Atelier Extension in Tomigusuku is a 54 m² garden studio designed by Studio Cochi Architects in 2023. Located in a residential neighborhood near the airport in southern Okinawa Prefecture, Japan, this small-scale architectural intervention redefines the idea of a home atelier extension by transforming it into a spatial buffer between domestic life, the surrounding town, and the natural environment.

Rather than simply adding workspace to an existing residence, the architects envisioned the structure as a reinterpretation of the traditional Okinawan Hinpun, a cultural architectural element that mediates public and private realms. The result is a minimal yet culturally grounded atelier design that balances openness, privacy, and environmental responsiveness.

Site Context: Garden, Neighborhood, and Industrial Edges

Situated on a flagpole-like lot set slightly back from the main road, the site is surrounded by contrasting conditions: a neighbor’s yard, a construction company’s material yard, and the existing home. Despite these edges, the garden remains bright and airy.

The client’s request was clear:

• Preserve the garden
• Add a compact atelier
• Protect views toward the main house
• Improve privacy from the road and neighboring properties

Instead of isolating the workspace, the architects positioned it strategically between the house and the street, creating a transitional architectural layer that regulates sightlines and movement.

This approach transforms the extension into an urban buffer architecture solution, enhancing both privacy and openness in a dense residential context.

Reinterpreting the Okinawan Hinpun

In traditional Okinawan homes, the Hinpun acts as a symbolic and physical boundary between public and private realms. While not always essential to daily function, it offers:

• Visual privacy
• Protection from storms
• Controlled visitor circulation
• Psychological distance from the street

Studio Cochi Architects translated this vernacular concept into a contemporary form. The atelier is deliberately placed slightly away from the center of daily life, allowing it to function as a protective architectural threshold.

Rather than a solid wall, however, this modern Hinpun becomes a flexible spatial device, part studio, part courtyard edge, part mediator between environments.

Spatial Strategy: Courtyard as Mediator

The atelier and courtyard are positioned between the primary residence and the town, effectively forming a layered spatial sequence:

Town → Front Yard → Atelier → Courtyard → Main House → East Garden

A large garden remains open toward the material yard on the east side, ensuring daylight and airflow. This strategic placement supports:

• Cross-ventilation
• Visual layering
• Flexible circulation
• Gradual privacy transitions

The atelier wall does more than block views, it shapes movement patterns. Visitors approaching either the main house or the studio experience a controlled yet fluid path, reinforcing the buffer zone architecture concept.

Flexible Openings: Adjustable Distance from the City

One of the project’s defining features is the large sliding door that connects the approach to the atelier. This single architectural gesture enables multiple spatial configurations:

• When open, the front yard, courtyard, and eastern garden merge into a continuous landscape.
• When closed, the atelier becomes an enclosed workspace shielded from outside views.

This adaptability allows occupants to regulate:

• Visual permeability
• Acoustic comfort
• Climate exposure
• Social openness

In Okinawa’s subtropical climate, where weather shifts quickly and typhoons are common, such flexibility becomes essential. The architecture responds to both environmental conditions and emotional states, offering users control over their relationship with nature and the city.

Section and Volume: Modest Scale, Generous Experience

Despite its compact 54 m² footprint, the atelier feels spatially generous. Its section reveals thoughtful proportions that maximize height, daylight penetration, and cross-breezes.

Rather than dominating the garden, the volume sits quietly within it. The material palette and structural design, developed with RGB structure, support clarity and efficiency without visual excess. The project demonstrates how small-scale Japanese architecture can achieve spatial richness through precision and restraint.

Architecture as Distance Management

At its core, the Atelier Extension in Tomigusuku is about managing distance:

• Distance between house and town
• Distance between work and domestic life
• Distance between exposure and privacy
• Distance between city and nature

By functioning like a modern Hinpun, the atelier enables residents to “live openly” without feeling exposed. It creates what the architects describe as a generous relationship with surroundings, where boundaries are adjustable rather than fixed.

This design philosophy aligns with broader themes in contemporary Japanese residential architecture, particularly the emphasis on thresholds, intermediate spaces, and climate-sensitive design.