2017/11 - Today Member of Building Code Council (Chiba Prefecture)
2012/07 - Today Member of Environmental Impact Assessment Committee (Koto City in Tokyo)
2011/06 - Today Member of Environment Council (Koto City in Tokyo)
2014/04 -2022/03 Japan Land and Environmental Institute Member of the exective committee of Japan Land and Environmental Institute
2019/12 -2020/11 Certified Public Accountant (CPA) Examiner
2006/06 -2020/03 Member of Building Code Council (Sakura City in Chiba Prefecture)
2017/04 -2018/03 Member of Compensation Standard Council (Ministry of Land, Infrastructure, Transport and Tourism, Kanto Regional Development Bureau)
-2017/03 Member of Research Committee on Business Compensation for a Golf Course (Ministry of Land, Infrastructure, Transport and Tourism, Kanto Regional Development Bureau)
-2017/03 Member of Research Committee on Business Compensation Standard for Tokyo 2020 Games (The Tokyo Organising Committee of the Olympic and Paralympic Games)
-2017/03 Member of the editorial board of the Journal of Japan Land and Environmental Institute (in Japanese) published by the institute of the same name
-2016/12 Member of Research Committee on Rule No. 42 of Land Compensation Standard (Ministry of Land, Infrastructure, Transport and Tourism)
-2015/03 Member of Land Price Investigation Committee (Kanagawa Prefecture)
-2015/02 Member of Building Code Council (Kanagawa Prefecture)
-2013/03 Member of Building Administration Systems Promotion Committee (Chiba Prefecture)
-2012/02 Member of Screening Committee on Public Property Management Fujisawa City in Kanagawa Prefecture
-2012/02 Member of Advisory Committee on Public Property Management Fujisawa City in Kanagawa Prefecture
-2012/02 Member of Screening Committee on Public Private Partnership Fujisawa City in Kanagawa Prefecture
-2012/02 Member of PPP Promotion Committee Fujisawa City in Kanagawa Prefecture
-2010/03 Member of Preparatory Committee on Public Private Partnership Fujisawa City in Kanagawa Prefecture
-2009/04 Member of Advisory Committee on City Hall Renewal Yokohama City in Kanagawa Prefecture
-2008/11 Member of Screening Committee on City Hall Renewal Yokohama City in Kanagawa Prefecture
-2008/03 Member of Research Committee on Compensation for Business and Customers Japan Organization for Land Acquisition and Compensation
-2007/03 Member of Research Committee on Compensation for Business Japan Organization for Land Acquisition and Compensation