17 October 2016 Last updated at 15:37 BST
Accounts filed with Companies House show the organisation had invested just £18m by the end of 2015.
But the US presidential hopeful's representatives claim the amount of investment has shot up to about £150m this year.
Trump Organisation claims £150m Turnberry investment
Donald Trump pledged to invest £200m in Turnberry after buying the Ayrshire resort in 2014.