In 1986 John began his real estate career as a sales and leasing agent specializing in Industrial and Investment properties with Colliers Tingey. After 30 years in the Central Valley, John joined Rossetti Company Commercial Real Estate in 2015 which subsequently became part of Colliers. Since starting in the Real Estate Business, John has leased and sold more than ten million square feet of commercial, office and industrial space and has been involved in sales transactions totaling more than $100 million.