Neighbors tell TMZ ... the house is crawling with Secret Service agents. One neighbor tells us, someone from the Secret Service approached him a few days back and asked if he'd be willing to rent out his house to them for a year. He politely declined.
The photo of Biden (above) was taken Monday as he was leaving lunch with several people.
We're told Joe Biden's son actually moved around 4 months ago, but it was kept on the down-low. He was previously living in Venice, CA in a house that had very little privacy, which seems to explain the move.