He is the President of the Society of Australian Golf Course Architects.

Having graduated with a degree in architecture from the University of Melbourne in 1970, Tony began to specialise in golf course design over 30 years ago. In his younger days, Tony played off a single figure handicap at Kew Golf Club, a club at which he has been a member for over 50 years. Some of his early golf course designs include Goonawarra Golf Club, Melton Golf Club, Bright Golf Club and Yarrambat Park Golf Club all in Victoria, Australia and McCracken Country Club in South Australia.

In 1992, Cashmore's big break came when he was asked to turn his attention to the design of The Dunes Golf Links on the Mornington Peninsula in Victoria. He has created a fine links course there which is highly rated (currently rated by Golf Digest magazine as number 25 in Australia's Best Golf Courses). Through his company, Cashmore Golf Design, Tony has designed such wonderful courses as 13th Beach in collaboration with world-famous golfer Nick Faldo (rated number 33 in Australia) and The Henley Course at The Heritage Golf and Country Club (rated number 76).

Other existing courses that figure in Australia's top 100 golf courses have been modified and added to in various ways by Cashmore Golf Design. Some of these include Royal Melbourne Golf Club, Commonwealth Golf Club, Metropolitan Golf Club, Kingswood Golf Club.

Cashmore's company, Cashmore Golf Design, has more recently burgeoned in its geographic spread and has now constructed courses in China, Korea and Vietnam. Many of the company's recent projects include residential and resort facilities.