This list is from nreionline.com and ranks the top office owners based on the volume of office space owned around the world as of December 31, 2015.
Top 5 Office Owners of 2016

Your Marketing Source For Texas Commercial Real Estate Reaching 100,000+ QUALIFIED Commercial Real Estate Brokers, Investors, Developers & Commercial Service Providers
This list is from nreionline.com and ranks the top office owners based on the volume of office space owned around the world as of December 31, 2015.