Justin Bieber Landlord Hires Extra Security to Curb His Excesses

Justin Bieber has just screwed over the owner of his Beverly Hills condo units the way he screwed over the other residents ... because the owner is now on the hook to pay for security to keep Bieber and his buddies in check.

As TMZ first reported ... Bieber's new neighbors are at war with the singer ... cops have already showed up twice in the middle of the night over party noise.  Some neighbors says they have literally choked over the smell of weed in the hallways.

So the Home Owner's Association had an emergency meeting this week and decided to hire security during the evenings and bill the owner of Bieber's units.  The guards will work between 6 PM and 8 AM.

The HOA can't go after Bieber because he's just a renter ... a renter who parties hard with the likes of Floyd Mayweather, Tyrese and Johnny Manziel.

The security team started Tuesday but there'll be plenty of time for a snooze -- Bieber's currently wreaking havoc in Miami.