The site is located in an Old GM building across the street from the Michigan Motion Picture Studios – 1999 Centerpoint Pkwy, Pontiac, MI – where most filming is currently taking place.
The Lexcorp scenes are expected to be shot here on June 12 & 13.
If you track down the location or watch them film, let us know about it at firstname.lastname@example.org!
UPDATE: According to batman-news.com, “due to rain, the military scene has been pushed to Friday the 13th. The LexCorp scene will now be shot on the 16th and 17th.”