Sylvia Caston-Coleman joined The John Buck Company in January, 2005 as an accounting assistant. Her responsibilities included A/R and A/P for a portfolio in excess of 3 million square feet. In June 2007, she was promoted to Draw Accountant in the Development Group. She was responsible for construction draw packages that included the 155 North Wacker office building, the Standard Hotel in New York, 57 Reade Condominiums in New York, as well as the Aloft Hotels and Clearwater in Oakbrook. She was also responsible for preparing monthly financial statements.

Prior to joining The John Buck Company, Sylvia was a Cash Management assistant with Kennedy Wilson Properties. She was responsible for processing wire transfers, mortgage payments, opening and closing over 150 bank accounts and reconciling these accounts monthly.