By mid-afternoon the blaze was 25% contained. Firefighters were making a stand near Kanan Dume Road to stop the fire's northwestward march through steep, heavy brush.
Calling the fire "dynamic and dangerous," Freeman said firefighters were making a concerted effort on multiple fronts to protect structures.
The fire, driven in the early morning hours by fierce 50-mph winds, engulfed about five homes in Latigo Canyon, 15 in the Newell Road area and as many as 15 in the Sea Breeze area, Freeman said, cautioning that the numbers were preliminary. At least one commercial building near Via Escondido may also have burned.
Six firefighters received minor injuries, Freeman said.
At noon, firefighters were fanning out to protect structures in Paradise Cove and Ramirez Canyon. St. Aidan's Episcopal Church was also threatened.
Farther south, in Ramona in San Diego County, a 30-acre fire broke out but was 50% contained by 1 p.m. and not threatening homes or structures.
"It's now just a matter of getting it fully contained," said a spokeswoman for the California Department of Forestry and Fire Protection.
In Malibu, the wide mandatory evacuation zone included all neighborhoods west of Corral Canyon Road, south of Mulholland Drive, east of Trancas Canyon and north of Pacific Coast Highway.
Evacuation centers have been opened at Agoura High School in Agoura Hills and Channel Islands High School in Oxnard. About 1,750 firefighters, at least 45 fire engines, numerous hand crews, 23 water-dropping helicopters and two fixed-wings planes were attacking the blaze, which broke out at 3:30 a.m. on a dirt road at the top of Corral Canyon Road and Castro Crest Motorway, south of Malibou Lake. The blaze had been named the Corral fire.
Freeman said the cause had not been determined. He said arson investigators had been dispatched to the fire's origin and were investigating all leads, including a report that campers in the area might have started the blaze. He said there was no indication that the fire was caused by downed power lines, although lines and toppled poles had blocked roads.
Going into the afternoon, officials were hopeful that the winds would continue to subside.
"There are some silver linings as we stand here today," Malibu Mayor Jeff Jennings said. "The winds are giving firefighters a chance to hammer the fire and bring it under control."
"Waking up at 4 a.m., with the smell of smoke in the nose and the wind beating at the window, is something you learn to live with here," Jennings said. "But it always comes as something of a shock."
Corral Canyon residents were awakened about 3:30 a.m. by the smell of smoke, sirens and evacuation orders. At the time, "the winds are all over the place and the fire is moving in every direction," said Los Angeles County Fire Inspector Sam Padilla.Resident Carol Sue Stoddard said firefighters "came by and banged on the door and said, 'You have to get out and get out now.' " The 48-year-old filmmaker, who lives on Corral Canyon Road, said she saw the fire come down the hills and ignite pine trees next to her house. "I was running in circles. I could have grabbed more, but I was taking footage. . . . Embers were going everywhere."
Stoddard watched her collection of 12 classic cars catch fire as she fled. Although the cars are not insured, her $2-million home is, she said.
Beverly Taki, 53, a Realtor who lives in Corral Canyon, said that the lights in her house went out about 5 a.m. and that she improvised by using the light of her cellphone. Taki said that a legendary resident of Corral Canyon named Ben Kennedy, who has lived there since 1954 and is now in his 90s, had to be evacuated by firefighters after his caretaker's truck was destroyed.
"We are always nervous about fires," she said. "We're a mile and a half up the canyon."