He is the managing director of the family @-@ owned property development , investment and management firm , W. A. Stockwell Pty Ltd , based in Queensland . He and his brother @-@ in @-@ law Mike Kelso are co @-@ owners of the company that was established as a construction firm by his parents more than sixty years ago . The firm have had successful development ventures in residential , leisure , retail , commercial and industrial property , and have undertaken a phased AU $ 350 million residential development in Brisbane 's West End . He and his family members was included among the 14 new entries on the 2014 " Rich List , " with a combined estimated net worth of AU $ 101 million .