
The first question a club should ask itself when it considers changing their course is how historically valuable the design of their golf course is. When the architect was. Harry Colt, Tom Simpson or Frank Pennink one can safely assume the golf course was well designed, and in most cases can even be regarded as a monument.
In those cases it is very important to not casually change the various style elements of the course in a number of areas. A good example of this is the fact that a lot of the bunkers on classic courses have completely changed over time. Be very aware of the golf course architect who just wants to apply his own style on every golf course (something that unfortunately has happened far too often so far on classic European courses).
The foundation for a good restoration are the original /routing/green/hole drawings and if available historic (aerial) pictures of the course.