The Moraga-Orinda Fire District received a report of a fire on Descanso Drive near Ivy Drive at 1:23 p.m., fire chief Randy Bradley said.
The fire burned eight acres before being contained at 3:15 p.m., Bradley said.
Fire crews remain on scene and continue to investigate the cause of the fire.
Bradley said the fire threatened some homes but fire engines were placed at the homes to prevent any damage.
The Contra Costa County Fire Prevention District also responded to the fire.