The Aamir Khan-starrer is shot in areas like Charni Road, Lower Parel, Colaba, Grant Road and Central Bombay to add the actual flavour of the city in the movie.
Two places - the chawls and mills - in Lower Parel have already given way to construction.
Kagti said: "Real locations... mostly old structures and buildings that are fast fading from Mumbai are used."
According to sources, the movie is shot in real locations as opposed to sets. The unit hasn't used even one set. The unit shortlisted 520 locations and finally they got to shoot in 47 locations.
"Talaash" sees Aamir as cop Surjan Singh Shekhawat and he will be flanked by two leading ladies - Rani Mukerji and Kareena Kapoor.