Rock Ventures, the umbrella for Detroit businessman Dan Gilbert’s portfolio of companies, announced Monday that two more companies will open an office in downtown Detroit’s 23-story Chrysler House, formerly the Dime Building, located at 719 Griswold.
The Detroit holding company Rock Ventures announced Tuesday that Troy-based GSI, a company specializing in security, network and system integration, has opened an office in Downtown Detroit’s Dime Building, a 23-story skyscraper located at 719 Griswold.
The microblogging site Twitter is opening an advertising office in downtown Detroit’s M@dison Building
The 1917-vintage Madison Theatre Building — now rechristened The M@dison by its new owner, Dan Gilbert and his Rock Ventures LLC — has been given a spectacular $12 million makeover.
Gilbert’s real estate investment group, called Rock Ventures, has now bought seven buildings in downtown Detroit along with three parking structures and one parking lot.