TMZ has learned the property Sandra Bullock just entered is owned by Gabriel Brener, a billionaire who owns a private investment firm in Beverly Hills.


Interesting that Sandra is making what appears to be a rare outing -- presumably to see a money guy.

As we reported, Brener -- who runs Brener International Group, LLC -- lives on the same street where Michael Jackson died.

Brener International invests in media, real estate and high-technology.