Just before 6 p.m. Monday evening Clackamas firefighters responded to a residential fire in Happy Valley.
Firefighters received multiple reports of a house along Mt. Scott Blvd that was well involved with fire and smoke.
When firefighters arrived, they reported a large residential home with heavy fire and smoke coming from the roof line and called for more resources to assist in the fire fight.
Fire crews began to get hose lines in place and establish a water supply with nearby fire hydrants in preparation for an extended operation.
Shortly after crews began to get water on the fire, Clackamas Fire Battalion Chiefs arrived and called for a second alarm.
During the initial fire fight crews were working in the offensive mode, fighting fire from the interior of the structure.
After approximately 20 minutes, due to the extent of the fire, the Incident Commander moved everyone to defensive operations or fighting fire from the outside of the structure until the main body of the fire could be knocked down.
No injuries were reported by fire crews and it took nearly 50 firefighters from Clackamas Fire District and Portland Fire and Rescue to bring this fire under control.
The homeowner discovered the fire when she arrived home from the grocery store. Knowing her two dogs were inside, the homeowner opened the front door and the two dogs were able to escape without harm. The homeowner was interviewed by investigators to help pin point the cause of the fire.
The cause of the fire is still under investigation.