R. C. Core Co., Ltd., together with its subsidiaries, plans, manufactures, and sells log and natural individualized housing in Japan. The company offers construction contracts for log houses; develops and sells residential lands; and provides maintenance and renovation works. It is also involved in brokerage and sale of residential land and condominiums; and sale and operation management villas. R. C. Core Co., Ltd. was incorporated in 1985 and is based in Shibuya, Japan.