Initially, the course included a field at the top of the present course, however the members soon realised that target practice from the adjoining shooting range made putting on the third green rather hazardous. Consequently, the top holes were discarded and additional land was leased on the site of the present first and eighteenth holes. In 1971 the club took the opportunity to purchase the land from Duns Castle Estate.
In 1994 further land was acquired which allowed the course to be extended to a full 18 holes and the present 18 hole course was opened for play in 1997.
A prominent feature of the layout is the use of the Wellrig burn which meanders its way through the lower part of the course. An upland course situated at the foot of the Lammermuir Hills, Duns offers spectacular views over the Tweed valley - known as the Merse - to the Cheviot Hills opposite.