Japan Asia Group Limited engages in the green community business in Japan and internationally. The company offers geospatial information solutions, including social infrastructure development, public works, disaster prevention and recovery, and administrative support solutions for private and public sector clients. It also plans, finances, constructs, develops, operates, and maintains solar photovoltaic power plants; develops and leases real estate; sells houses; and engages in the power generation, forestry, timber related, and wooden structure businesses.

In addition, the company provides property management services.