Hi Red, I've been looking in the permissions - https://forum.rising-world.net/thread/11483-permissions-new-version/
There is a permission - createown - under blueprints. "Determines whether or not a player is allowed to create new blueprints which only contain his own buildings"
How does this work? Does it require that the land is protected using the built-in area protection, or, does it simply look at who created the construction elements within the area being blueprinted?