ALAMO -- San Ramon Valley firefighters responded to a residential fire in the first block of Inverrary Lane on Saturday, said Battalion Chief John Viera.
The fire was reported at 5:59 p.m. and was under control by 7:42 p.m., he said.
"There were no injuries," he said. "It's still to be determined how much damage was done."
The cause of the fire was unknown and is being investigated, Viera said. He did not know if anyone was home at the time of the incident.
Firefighters from the Contra Costa County Fire Protection District and Alameda County Fire Department provided assistance to the San Ramon Valley Fire Department by helping to cover three of their stations while they fought the blaze, Viera said.
Contact Theresa Harrington at 925-945-4764. Follow her at Twitter.com/tunedtotheresa.