Firefighters battled a structure fire on the 100 block of Alamo Ranch Road in Alamo on Saturday afternoon.

ALAMO, CALIFORNIA - JUNE 25: A firefighter kneels to catch his breath while battling a structure fire on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group)
ALAMO, CALIFORNIA – JUNE 25: A firefighter kneels to catch his breath while battling a structure fire on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group) 
ALAMO, CALIFORNIA - JUNE 25: A firefighter carries a hose up the road while battling a structure fire on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group)
ALAMO, CALIFORNIA – JUNE 25: A firefighter carries a hose up the road while battling a structure fire on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group) 

The fire spread from the structure to the surrounding vegetation. The San Ramon Valley Fire Protection District required aid from Cal Fire, Alameda County Fire and Contra Costa Fire. Firefighters quickly got the vegetation fire under control after it burned about 3 acres.

ALAMO, CALIFORNIA - JUNE 25: Flames shoot from the window of a home on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group)
ALAMO, CALIFORNIA – JUNE 25: Flames shoot from the window of a home on the 100 block of Alamo Ranch Road in Alamo, Calif., on Saturday, June 25, 2022. The fire spread from the structure to the surrounding vegetation requiring aid from Cal Fire, Alameda Co Fire, and Contra Costa Fire. (Jose Carlos Fajardo/Bay Area News Group) 

The cause of the fire is under investigation.

Source: www.mercurynews.com