Don't really need lock picking houses anymore. Just need to find a tinker, or tinker them your self. Since they changed the code, you can get gains off of just one lock box prepared at the appropriate skill level.
30 skill tinker boxes will get you to about 55 to 60 lockpicking
50 skill tinker boxes will get you 75 (or so) lockpicking
GM made tinker boxes will get you 95 lock picking.
You will still need to do the last 5 on real chests or go to the twisted weald and get disco'd so the GM tinker boxes will take you to GM.
Q