A fire reported around 7 p.m. at 72 Perthshire Rd. quickly went to three alarms and caused an estimated $500,000 in damage, the Boston Fire Department reports.
Fire Investigators determined the cause as careless disposal of smoking material. Point of origin; 2nd floor rear porch.
Firefighters went into "Mayday" mode when one firefighter's alarm went off, but he was found and accounted for.
The fire was knocked down around 7:50 p.m.; it destroyed the entire rear of the 2 1/2-story house.
The department reports four firefighters were taken to the hospital with injuries, none considered life threatening. No residents were injured..