San Ramon Valley firefighters are battling (12:47 p.m.) a two-alarm blaze at a home in the 5600 block of Johnston Road.
Firefighters arriving at the scene reported seeing power lines down in the area and fire burning through the roof of a 3,000 sq-foot, single-story residence.
Immediate on-scene assessments were that the house was fully engulfed.
All of the occupants of the residence have been accounted for.
