"Forty percent received either smoke or direct fire damage," said Deputy Fire Chief Joseph Rodondi of the Livermore-Pleasanton Fire Department.
The call to 7004 Corte Nina came in at 10:22 a.m., according to Rodondi.
"The first company arrived and found heavy smoke in the building," he said.
Most of the damage was contained to the attic and bedroom areas of the home.
Rodondi said 19 firefighters responded to the scene, and it took about 30 minutes to bring the fire under control. No one was injured.