According to On Location Vacations, below are some of the potential locations that Transformers 5 will be filming at once principle photography begins around June 15 in Detroit, Michigan. This falls into the rumor category and in most cases they are private property so production will likely have those locations locked down and trespassers prosecuted so warning for the curious.
Michigan Motion Picture Studios (old Raleigh Studios)
1999 Centerpoint Parkway
Packard Plant (Transformers 3 shot here, too)
1600 East Grand Blvd.
Michigan Central Train Station
2405 West Vernor Hwy.
Cafe D’Mongo’s Speakeasy
1439 Griswold Street
MGM Grand Casino (rumor has Michale Bay will also be staying here)
1777 3rd Avenue