TANAKEN Inc.

TANAKEN provides the planning of construction and management of demolition work of building structures and related construction work in Japan. The company offers planning, construction planning, outsourcing and equipment arrangement, construction management, safety management, cost management, fund management, administrative correspondence, and neighborhood correspondence. It also undertakes demolition business, soil and underground remediation, civil engineering work, and recycling business.

Incorporated in 1982 and headquartered in Tokyo, Japan, the company was formerly known as Tanaken before rebranding in April 2025. TANAKEN Inc. is a subsidiary of Three Hundred Holdings Co., Ltd.