Carrot Holdings Headquarters Building

About the project

Carrot Company, founded in Osaka in 1988, has long been engaged in the planning, manufacturing, and sales of bags and umbrellas. The new headquarters was envisioned as an architectural expression of the company’s philosophy: not to follow short-lived trends, but to create enduring essentials that remain cherished over time. The building is a steel structure with eight stories above ground, a total floor area of 4,150 square meters, and a maximum height of 35 meters, establishing a strong presence in the city.
The design pursues timeless value through the principle of the Golden Ratio (1:1.618). The facade is composed with strict proportional order, achieving an elegant, balanced, and enduring presence. Light-colored granite, resonating with the corporate identity, symbolizes growth and continuity. The Golden Ratio extends beyond the exterior, applied to the rhythm of interior joints and signage, creating coherence and a calm spatial rhythm. This integration allows the architecture itself to communicate enduring value to the urban landscape.
Inside, a double-height stair links the showroom and offices on the first and second floors, encouraging integration among departments and fostering innovation. The rooftop garden and wooden deck provide places of rest, inspiration, and communication, enhancing daily use while also connecting the building to the wider urban life.
Architectural details reinforce the identity: granite mullions layered to emphasize verticality, a facade composition structured on the Golden Ratio, and a podium distinguished with depth and shadow. At night, lines of light from the landscape highlight the granite facade, offering a grandeur distinct from its daytime dignity.
Through geometric order and material precision, the project transforms corporate philosophy into architectural form, presenting the image of a “timeless enterprise” within the urban context.

OKUMURA CORPORATION + MR STUDIO Co.,Ltd.

OKUMURA CORPORATION, founded in 1907, is a mid-sized general contractor in Japan with expertise in civil engineering and building construction. Upholding the values of “reliable management” and “sincere construction,” the company has contributed to society through high-quality infrastructure. It has developed technologies such as seismic isolation systems and the OCMS shield tunneling method, and has recently expanded into renewable energy and aquaculture, reflecting its growing focus on sustainability.
MR STUDIO Co., Ltd. is a Tokyo-based architectural firm established in 2017. The firm focuses on unveiling each project’s latent identity through concept-driven, innovative design across various typologies, including residential, office, hotel, and cultural facilities. By interpreting the site’s context with precision, MR STUDIO creates unique, place-specific architecture. Its holistic approach integrates signage, lighting, landscape, and product design, enriching spatial experiences.