Residence Key

The  is a key in Dark Souls.

Overview
Opens several buildings in Undead Burg, the Master Key can open all of these doors except for the building that Griggs of Vinheim is trapped in.

Obtaining

 * Can be purchased from Undead Male Merchant for 1000 souls.
 * Will be dropped by Undead Male Merchant when killed if it was not already bought from him.