Firefighters responded to a house blaze yesterday on the 1,000 block of Margrave Drive in Roane County. Harriman Fire Chief Brad Daniels told 105.7 News this morning an outside storage building on the back side of the structure and part of the kitchen sustained damage. No injuries were reported and a cause is under investigation. Daniels said the residence was vacant and no power was running to it at the time of the fire.