Glarthir's House is located in Skingrad, and belongs to the quest starter of the Paranoia quest.
Obtaining the Key
In order to get the key to his house, you can take part in his quest, or you can pickpocket his key. Barring the pickpocket attempt, you can obtain his key during his quest, in one of two ways:
- Telling him that no one is following him, which causes him to attack you.
- After being given the task to kill his enemies, tell the town guard about it, and wait for them to kill him.
Either way, you will end up with a corpse of Glarthir that you can pick clean, including the key to his house.
House Contents
Glarthir's House is full of several books that might interest you if you want to read up on the lore of the Elder Scrolls. For example, you will find the entire five volume collection of The Real Barenziah, ready for you to read. Also, in the wicker basket near the entrance to his home, you will find 800 gold pieces to fill your purse with. A trip to his basement reveals a hidden key under one of his plates, as well as the notes that some of the people in Skingrad might have alluded to, if you inquired about Glarthir. The hidden key opens the cupboard in Glarthir's bedroom, which holds several items that you might find useful.
Notes on Theives Guild
When doing the quest Independent Theivery, and you don't want to steal from a living person, this is a great place to get a lot of your fenced gold. Even though the guy is dead, it still trespassing to enter his house, and so everything is considered stolen by the game.