The bees were bred specifically for this movie. They needed to make sure that the bees were only 12 hours old so that they looked like mature bees, but their stinger wouldn't be powerful enough to do any real damage.
Exterior, hallway and stairway scenes were actually filmed for a few days in the infamous Cabrini-Green housing projects, though the producers had to make a deal with the ruling gang members to put them in the movie as extras to ensure the cast and crew's safety during filming. Even with this arrangement, a sniper put a bullet through the production van on the last day of filming, though no one was injured.
The architecture flaw of the medicine chests and people being able to sneak in, is something that Bernard Rose discovered in his research for the film and there was actually a series of murders that were committed this way.
In a August 2011 interview with Cindy Pearlman of the Chicago Sun Times Tony Todd stated "I'll never forget that I filmed that movie in a building on the South Side of Chicago. Building 116. Unit C," he says. "That's the Candyman pad!"
Philip Glass was asked by director Bernard Rose to compose a score for his film "Candyman". Glass accepted and wrote a "gothic" score for chorus and pipe organ. The final version of the film was a disappointment to Glass. He felt that he had been manipulated. What was presented to him as a low budget independent project with creative integrity became (in his opinion) a low budget Hollywood slasher flick. As a result, Glass witheld his consent for the release of the recordings of the score for years, until 2001.
There is a Guy Fawkes mask hanging next to Helen's bathroom mirror. Fawkes is an infamous figure in English history (perhaps an allusion to the source novella which is set in England), who attempted to blow up the English Parliament on November 5, 1605. Guy Fawkes Day was traditionally celebrated by lighting bonfires and burning Fawkes in effigy, although this practice has been curtailed in recent years by the fire department.
There was infact a Candyman killer in real life. Dean Corill was a serial killer in the Houston Texas area who raped and murdered a number of boys from 1970 to 1973. He would lure children into his home using candy from his family's factory; so the media dubbed him the 'Candyman'.