Excel spreadsheets for all three faction types. Use drop-down menus to choose which building goes in the building slots for a province. You can also adjust for difficulty and taxation penalties to public order.

If you have any recommendations or if the files on mediafire have expired, do let me know.

http://www.twcenter.net/forums/showthread.php?742877-New-and-improved-building-planners-for-ALL-factions
https://forums.totalwar.com/discussion/186694/new-and-improved-building-planners-for-all-factions