2:10 PM PDT -- Sources tell us ... Bieber is extremely close to sealing the deal on the house ... but he does have one minor reservation -- he's frustrated that everyone knows about the home.
Still, we're told Justin and the seller are "very close" to going into escrow ... they just need to work out a few minor points.
18-year-old Justin Bieber won't be able to enjoy his L.A. dream mansion to the fullest -- at least for the next three years -- because one of its coolest amenities ... is strictly for the 21+ crowd.
As we previously reported, Bieber has put an offer on a 9,000 sq. ft. Calabasas estate way outside Hollywood -- and among its awesome features ... a fabulous wine cellar.
Bieber won't be able to avail himself of the cellar's services -- unless he plans to store Pepsi down there -- but he WILL be able to enjoy the 6-bdrm mansion's GIANT outdoor pool, spa, sauna, separate guest house, and private movie theater.
As for the real selling point -- the Calabasas community where the house is located is a veritable anti-paparazzi fortress ... with several highly-guarded security gates. The community is also home to Travis Barker, NFL star Keyshawn Johnson, and Master P's son Romeo.
No word yet if Bieber’s offer has been accepted.
Justin Bieber's Dream Mansion
Underground 21+ Entertainment
3/27/2012 1:00 PM PDT BY TMZ STAFF
Get TMZ Breaking News alerts to your inbox