Damage to a Walkerville house is pegged at $100,000.
About 10 trucks and crews were called out to 1653 Benjamin Avenue just after 10:00 p.m. Thursday.
The house is thought to be abandoned.
One fire fighter is reported to have been treated for heat exhaustion on the scene by EMS paramedics.
The fire is believed to have started in the second floor attic.
Witnesses say they could see flames from the backyard.
