SMOKE has filled the air at Charlestown as fire fighters work to douse flames inside a granny flat at a property on EK Avenue.
Crews were called to the address at 12.50pm after residents noticed smoke coming from the back of the house.
Fire trucks from Charlestown and Tingira Heights raced to the scene and discovered the fire was actually in the granny flat at the rear of the home.
Crews checked for residents at the scene, but the property was found to be vacant.
Fire fighters gained control of the blaze and remained on scene at 1.20pm to monitor the site.
While smoke has been billowing from the property for 30 minutes, a NSW Fire and Rescue spokesman said neighbouring homes were not at risk.
Once the site has been deemed safe to enter, the cause of the fire will be investigated.
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