OCFA firefighters saw a visible smoke column as they responded to an industrial building just south of 2500 South Fairview Street in the city of Santa Ana at 8:52 a.m. on Saturday morning.
While quickly initiating an aggressive attack, a second alarm was requested.
The firefighters knocked down the fire in just 15 minutes, confined the fire to just one unit, and saved the rest of the businesses.
The OCFA crews were supported by firefighters from Fountain Valley and Costa Mesa.