HI Niall,
The course has about 90m (300 feet) elevation change from the lowest point to the highest point (Pretty much the same as Pasatiempo). Due to the lay-out of the property, the historic main house, and the other golf course, golfers start at the low point of the course. The 1st hole is fairly level. The main uphill holes are 2,5, and 10, and the saddle on 11this the high point. From there, it is all downhill (with the slight exception of the 15th tee shot) till the end.
The walks from green to tee are generally very short. I guess the best way to imagine the property is not as 'hilly', but as being on a hill side. It is south facing (good for the winter sun, and has the River Tyne on is lowest boundary – though you don't see it really) Fortunately however, it is has three terraces (bottom, middle and top) that are separated by two slopes. Many of the holes, e.g. 1,3,4,9,14,15,18, play along these terraces, so have no speakable elevation change. These help the rhythm of golf course considerably.
So understanding the slopes was one key to routing. But it was shaped by other factors too, such as Tree Protection Orders, Archeology areas, buried services, pre-determined start and finish points, existing roadways, etc. The routing was crucial to getting this course to sit comfortably on the property and I think we got it about right. And a direct cost benefit to the client of the routing being as it is was our being able to build the course with minimal (in todays standards) earthworks; only a little over 100,000m3. (NB- For comparison, I was at a Nicklaus course under construction in China last year and they were moving over 7,000,000m3. The most interesting thing I found about this was that the earthworks rate per cubic m was almost exactly the same as we had in the UK. So imagine the difference in costs to the client?)
If there is a neat flip side to the uphill holes at Close House, its the fact you get some fun downhill holes too. These are most notably the 6th, 8th and 13th.
Hope you get a chance to visit.
scott