I have played 3 rounds there on 3 separate occasions ....
One area of things I know quite a bit about (I am an Architect [buildings]).
But I would guess it was less than $250k and as Dormie was built in the midst of the financial crisis which hits this segment of the economy badly, thus it might have been less than that. They are well away from town which will drive down the regulatory burden. C & C and the Owners and I do not know whoever else was involved located the structure close to the top of a rise in the property so that by itself "solved" drainage problems. Their investment in Food Service is about at the rock bottom minimum (as a golfer, I have no issue with that). The building is simple and compact enough so that a single person can perform all tasks in off hours.
I have one story concerning that..... I was out playing, by myself having the whole golf course to myself, on a nice Monday afternoon in April 2014 and "management" decided to close the clubhouse down. Personnel hunted me down on the 12th hole, informed me of that, and that they left a cooler of cokes and beer on the clubhouse porch. For the course and the laid back experience, it is a must play when I make the 4.5 hour drive.