Ohishi Construction has shaped Japan’s infrastructure for nearly a century, leading the way in civil engineering and regional development.

Pioneering technologies like the Submarine Cleaner, setting new standards in underwater environmental preservation.

Recognized for groundbreaking achievements in construction, including the Minister of Agriculture, Forestry, and Fisheries Award (2024).

Combining advanced technology with eco-conscious construction to protect and restore marine and urban environments.

Specializing in port works, building construction, and infrastructure projects that drive progress and economic growth.

Delivering high-quality solutions in civil engineering, U.S. military base projects, and environmental technology.