Ryoji Hirose

Sakkoken KK provides inspection confirmation, performance evaluation, and survey diagnosis businesses. Its services include conformance certification for housing finance support organizations; housing performance evaluation works; long-term excellent housing technical examination works; housing defect guarantee liability insurance business; investigation, diagnosis, inspection and appraisal of building works; seismic standard conformity certification business; seismic investigation and seismic diagnosis; and others. The company was founded on October 1, 1974 and is headquartered in Sapporo, Japan.