The woman, identified as Lana John, is believed to have been shot before the fire started.
The burnt home is said to be the site of a drugs, arms and ammunition find less than two days ago.
According to police, at about 2:30am on Thursday, residents of Purcell Street heard several loud explosions.
About 10 minutes later, they observed flames inside a home along the roadway.
The burnt remains of the woman were later found in the gutted house.