CONTRA COSTA COUNTY -- Fires across the county kept fire crews unusually busy Friday night, and they reported no injuries.

At about 10:45 p.m. a large fire was reported at a 10-unit garage structure in the 2700 block of Argyll Avenue in Concord.

Crews arrived to find seven garages already on fire, with the blaze spreading to the remaining three as well as surrounding vegetation and a nearby apartment complex, Fire Marshal Lewis Broschard said.

However, the crews and their backup were able to contain the flames to the one structure, staying there for four hours to finally extinguish the fire and help the owners salvage their belongings, Broschard added.

About an hour before that fire broke out, crews extinguished a vehicle fire at Longview and Clayburn roads in Antioch that involved power lines and bushes but did not burn any structures, Broschard said.

Just after 6 p.m., county fire crews were called to a house fire on Myrna Way in Rodeo, Broschard said. That fire tied up the responders for about 90 minutes, he added.

Around 4:45 p.m., another fire damaged a living room of a townhouse in the 600 block of Little Lane in Pleasant Hill.

Fire crews were able to contain the flames to the attic and one unit of the two-unit townhome, Broschard said, "salvaging all of the home's contents to prevent fire and water damage to the contents."

No causes of any of the fires were released Saturday afternoon.

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"Last night we had 12 fire crews committed on two incidents for an extended period of time while still meeting the needs of providing emergency response in all of our communities with the remaining sixteen fire crews. This depth of resources is critical to meeting the ongoing needs of emergency services during larger incidents that occur frequently in the Fire District."

Contact Sean Maher at 925-943-8013. Follow in at Twitter.com/OneSeanMaher.