Peter:
I've designed a 9-hole course in CT that should be going to construction in 2006 if (and this is a big if) the housing planned to go around it is approved. The number$ just don't make a lot of sense if we just build the course. Expenses for a 9-holer are very similar to those of an 18 hole course, but the revenues aren't as high. Therefore, any "highest and best use analysis" for the property would not recommend only a 9-hole course.
As far as the course itself, certain environmental issues and other constraints will keep the length down to about 2500 yards and a par of 33. But it will definitely be no pushover.
There are some high-end daily fee courses in the area, as well as some other regulation-length, 18-hole public courses. So, the target audience for this course will be mostly seniors, juniors, ladies, beginners, and the countless other local golfers who can't wait for it to be open! The good player will still find it challenging and hopefully, we'll get all types of players out there. Obviously, 9 holes takes less time and less money. And if the design is fun and interesting and the course is in great condition, the golfers will find you.