Tyrese Gibson Lands MANSION for a Steal -- I'm a Master Haggler!

12/3/2011 12:50 AM PST

Tyrese Gibson Lands L.A. MANSION for a Steal -- I'm a Master Haggler!

Tyrese Gibson has got some serious negotiating skills -- TMZ has learned, the actor just snatched up a spanking new L.A. mansion ... for almost a half a mil less than the asking price.

The R&B star closed on the digs in July, dropping $1,038,750 on the deal -- but according to court docs obtained by TMZ, the original asking price was much steeper ... $1,499,000.

The 5-bedroom, 5,586 square foot Mediterranean-style palace -- built just this year --  comes complete with a giant tropical backyard featuring a waterfall, private pool, basketball court … and enough room for 10 cars.