Justin Bieber has officially purchased a mansion in Calabasas for $6 million ... and X17 told you first!

The 18-year-old singer's gorgeous 9,000 square-foot estate is located in a gated community.

The mega mansion boasts a large pool, a huge guest house, and ample garage space to accommodate JB's multiple luxury cars which include a $160,000 customized Range Rover, a Batman-themed customized Cadillac, a Ferrari and a $115,000 Fisker Karma.

The Calabasas estate was originally listed for $7.5 million, but Biebs was able to talk the price down. We have a feeling Biebs' girlfriend Selena Gomez will be visiting quite frequently!

See more of the incredible pad in our gallery below!