If it is posible, from different periods of the Middle Ages, as castle desing changed throuth time (from wooden and dirt fortifications to castles desing to resist cannonballs and all on the middle).
Hi, hopefully someone can drop by with an overview, but meanwhile you may be interested in a few posts about castles that mention how long they took to build
How much would it have cost to build an average castle? where /u/mormengil looks at 12th c French knights' castles. If you're interested in more detail about their construction, /u/mormengil elaborates 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? where /u/silverguardben makes brief mention of the duration to build a 12th c English king's castle
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.