Justin Bieber -- Eyeing Enormous Atlanta Mansion ... On Blackland Roa

Atlanta residents beware -- Justin Bieber has been scoping out houses in Atlanta ... and one of the mansions he's eyeing is on BLACKLAND ROAD.

The 7-bedroom 16,000 sq. ft. house is located in the exclusive Buckhead district -- where Usher currently lives. Young Jeezy also calls Buckhead home.

It's listed for $10.95 million.

As we reported, Bieber wants to move to Atlanta to be closer to a thriving hip hop community -- and this house is extra special because it meets Bieber's list of Atlanta real estate criteria. After his Calabasas fiasco, sources tell us, Bieber's demands include an estate that:

-- Can't be visible from the street (preferably secluded on 5+ acres)
-- A minimum of 10,000+ sq. ft.
-- Lists for between $4 and $10 mil.

So far, we're told Bieber has breezed through multiple estates, and he's looking to buy ASAP.

As we previously reported ... Bieber is selling his Calabasas mansion and he's looking at large, private estates 20 miles from where he currently lives. Yes, he can afford 2 houses.

FYI -- Buckhead is considered the old money part of ATL -- so turn down your hearing aids.