The shots were fired into the front window of 5373 N. Milwaukee Ave. office by someone passing the building, according to reports.
Campaign workers for Faz-Huppert, who is running for 45th ward alderman, were inside the office, but no one was struck.
Faz-Huppert is one of seven candidates in the race for the aldermanic seat.
No one is in custody for the shooting. There's no word on whether the shots were intentional.