[Crontica]

Originally Posted by BoopDeWoop

Yes, that is his house, and he's an information broker.
Namie is his assistant.
He's a member of dollars

Spoiler for Gangs:

but he's not really in a specific gang due to the fact that he manipulated all of them

Geez, I swear they repeated this a million times in the light novels and anime, he even just stated the fact that he was an information broker in the last episode.
Oh, and he graduated high school he's

Spoiler for Izaya:

actually 23 years old but lies to everyone about his age and says that he's 21

We all took that purely as sarcasm, as everything that comes out of his mouth sounds like a cynical joke.