Quote Originally Posted by Zarky View Post
There is a cap of 1 and it can't be increased without changing some files. This is true for many buildings like sword, spear, archer and horse dojos, temple, chapel and ninja building.
Also I'm pretty sure you cannot build any of these top level buildings if one already exists, even if AI builds it.
Haven't built a Kabunakama, but there is no cap on the # of top level buildings in the game, only on the number per faction, each faction can only build one of each. ie I can build a legendary sword dojo even if another faction did it first. The only catch is you get no faction bonus if you didnt build the first.