It started in one home around 5 p.m. Monday, and when fire crews arrived, the blaze had spread to neighbouring homes.
The fast spread of the fire forced six children and two adults out of the house next door, while no one was in the home where the fire first started.
Fire officials say the intensity of the fire in the initial Hidden Valley home created a flashover condition, preventing firefighters from entering.
Firefighters used aerial ladders to fight the fire from above as well as master streams and hand lines on the ground to protect exposures and extinguish the fire.
Officials say the home where the fire started had the most damage, while two homes to the east had significant damage, while the home to the west had slight damage.
No cause has yet been released.
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