Lady Jannath's Estate is a large manor located in the Lower City of Baldur's Gate in Chapter Three. It is found on the west side of town, south of the House of Grief.
Overview
Lady Jannath's Estate consists of four floors.
Throughout this area, you will find hostile Poltergeists, which have natural invisibility, can throw objects, fly, and perform ranged shove attacks.
Other hazards include Cursed Skulls. The skulls deal thunder damage and knock back the party. Use Silence to stop the skulls from casting their spells and then utilize remove curse or simply use throw a "thrown" bludgeoning weapon at them, which will destroy them in one attack.
Additionally, Golden Candelabrum scattered throughout are haunted by Vengeful Soul and Tormented Soul. These afflict negative auras on nearby characters, and the candelabrum will unleash the soul when destroyed.
Haunting
The estate exists in various states of haunting, depending on the status of the Free the Artist quest. If Oskar Fevras was spoken to in Act 1 and the quest is active, Tarhun Mnemonis will warn you that the manor has been taken over by poltergeists. If Oskar died in Act 1, the house will still be haunted but Mnemonis will say that Lady Jannath is in mourning. Otherwise, the manor is not noticeably haunted and instead hosts an opulent art show.
Ground floor
The ground floor is entered via the foyer, where floating furniture makes it immediately clear that something is amiss. Two large stairs on either side lead up to the first floor. Past these are a larder and kitchen on the west and east sides of the structure, respectively, each occupied by Poltergeist ×3.
Beyond these, at the north side of the structure, is a large stairwell connecting all the floors. Ascending this way can be treacherous due to the numerous enemies that aggro from above.
First floor
This level can be reached by the interior stairs or by an exterior balcony on the south side of the structure, which leads to the library.
Entering from the foyer stairs leads to a balcony guarded by Poltergeist ×2.
In a small library to the west, a Contractor's Record can be spotted on the desk (Perception DC 0). A locked (DC 15) strongbox contains 
Hand Crossbow +2, Arrow of Fiend Slaying ×6, and Arrow of Aberration Slaying ×6.
Second floor
Oskar Fevras and Lady Jannath can be found here as part of the quest Free the Artist.
Third Floor
This floor is occupied by several Cursed Skulls.
Fourth Floor/Lady Jannath's Atelier
Related Quests
Notable Loot
Til Death Do Us Part - Stolen or looted from Lady Jannath
High Security Vault n°2 Key - Stolen or looted from Lady Jannath
After Death Do Us Part - Possible reward for completing Free the Artist
Related NPCs
Creatures
These creatures are only present if Free the Artist is in progress:
