Generates mini mods to automatically build buildings in either your directly held demesne (e.g. county seats), baron vassals in your counties (e.g. county barons) or vassal barons (any direct vassal of yours whose primary title is a barony.) It honors build times, build costs, potentials, prequesitits, and technology requirements. It also benefits from local construction technology bonuses, though not from minister construction bonuses.
AutoBuild generated for this version of HIP. Should work for arbitrary versions unless they modify the building trees (which isn't entirely impossible). Let me know if you run into issues and I will regenerate the file. Or generate it yourself via the script on the thread. See below for exact version information from HIP directory.