The incident took place in New Friends Colony yesterday and it came to light when the victim, a mother of two, approached police today.
She told police that three men raped her in her servant quarters yesterday.
After a medical examination confirmed rape, the three accused -- Kamal (30), Narayan (28) and Baburai (28) -- were arrested.
Kamal is a driver, while the others earned their living by cleaning vehicles in the same locality, police said.