The family dog did not survive an Ewa Beach house fire Saturday afternoon, but a man and a young boy escaped the billowy blaze without injury, a Honolulu Fire Department spokesman said.

Earlier, a fire at Schofield Barracks displaced a family of three.

Capt. Terry Seelig said the fire, which appears to have started in the kitchen of a duplex unit in the Waterfront at Pu‘uloa community, initially prompted three alarm calls because firefighters could see an obvious cloud of heavy smoke as they pulled away from the Ewa Beach station.

"These houses — they’re not close together but they are duplexes, and they are older, so with the amount of smoke and knowing this area he requested additional services," Seelig said of the captain of the company. "(The third alarm) was a good call on his part, but not needed and returned."

The exact cause of the fire is being investigated.

Seelig said the fire started on Kela Place at about 2:34 p.m. when the man and boy were home and the third occupant, a woman, was at work.

Firefighters arrived at 2:43 p.m., had the blaze under control two minutes later, and extinguished it around 3:30 p.m., he said.

Damage to the structure and contents of the affected unit are estimated at $350,000. The adjacent unit sustained only minor damage.

The Red Cross was called to the scene to assist the displaced occupants.

Earlier, a family of three living on Schofield Barracks was displaced after their one-story home on Charlton Street caught fire, Seelig said.

Only one family member was home when the fire started at about 10:35 a.m., and no one was injured, he said.

Seelig said HFD responded to the scene around 10:40 a.m., about the same time as federal firefighters, and assisted in getting the fire under control within about 10 minutes.

Damage to the home was heavy, he said.

Stefanie Gardin of U.S. Army Garrison-Hawaii public affairs said federal firefighters are still investi- gating the cause of the blaze.