> One bit of interest -- if constructed back in the 1300s, it would have probably taken 4 years or so. Funding is the biggest difference, historically it would have been built from a rich patron's pockets with no desire to wait 25 years for the protection and image it would provide.

From visiting the site a couple of years ago, the team is about 30 people, so they are looking at a 25-30 years timeframe to build it. In 13 century, the builder would hire about 70 people (typical small lord could not afford to pay for more) and it would take 10-15 years.