Time for a Measured Survey
One of the issues with restoring a castle is not only making plans of what you want to turn it into, but also acquiring plans of what the castle currently is. Despite the best efforts of architects, lawyers, and other professionals over the last several months, no one has been able to find a copy of any of Knockderry Castle's architectural drawings.
Just a few years ago, that would have been a time consuming problem. But with the emergence of digital scanning, the task gets much easier. Thanks to the help of Lee Riley and Mark Hudspith of AMR Geomatics based in Northumberland, England, we'll soon have a digital scan of not only the castle and the cottage, but also of much of the grounds. That digital scan will allow us to know elevations within the castle (there are lots of elevation changes as you might imagine), and allow us to have 3D renderings of the castle (in present condition and what we want it to look like) as well as 2D architectural plans.
Here's a clip of them explaining their craft. Thanks for your help, Lee and Mark!!