Hi, while waiting for replies, you may be interested in a few earlier related threads
How much would it have cost to build an average castle? where /u/mormengil looks at 12th c French knights' castles. They elaborate further in How do you build a castle?
I want to build a castle in England in the 13th Century...how do I go about doing it? featuring /u/silverguardben
I'm a medieval king building a network of castles, where do I build them that'll stop invaders from ignoring them and going straight for towns or cities? where /u/Superplaner mentions a 10th c French keep
I am the King of England in the mid 16th century and I want to build a new castle, what is the process from wanting it to the day I walk in to my new Kingly crib? where /u/lebennaia mentions a source that could be useful for further reading on English construction, History of the King's Works.