| “ | This is a pocket plane, headquarters of the Bregan D'aerthe, my mercenary band. | ” |
— Jarlaxle | ||
Jarlaxle's House is a single room, located in an unknown locale, maybe even on another plane. The party is teleported here in order to hear a "proposal" from Jarlaxle.
If you have found yourself here, then that means the party has already taken the first steps in the Intrigue with Jarlaxle quest line.
There is no doorway or means to leave this room, except at the will of Jarlaxle. The room has no hidden containers, traps[1] or removable items.