It's unclear if the fire is burning the vineyard or the house as well. Later, the Los Angeles Times reported that the fire had grown near Murdoch's estate, but had not burned the property's buildings or vineyard.
Moraga Estate, the only working winery in Bel-Air and home of Twenty-First Century Fox and Fox News Chairman Rupert Murdoch, appears to be the latest casualty of wildfires spread by the Santa Ana winds in Southern California.
No other wine producers have reported damage from the current fires, although many buildings in the area are now under threat from fire damage.
The Bel Air blaze is only one of four other wildfires now being tackled around Southern California. Later, three helicopters dropped water to tackle the fire. In the posh Bel Air area, wildfire has destroyed "at least four and possibly six homes" and forced evacuation. "We believe the winery and house are still intact".
'We are monitoring the situation as closely as we can, and are grateful to all of the efforts of the first responders'. "Some of our neighbors have suffered heavy losses and our thoughts and prayers are with them at this time".
"The prospects for containment are not good", Ventura County Fire Chief Mark Lorenzen said on Tuesday.
Murdoch's property at 1050 Moraga Ave. was bought in August 2013 for $US28.8 million ($A40.3 million). That fire has already claimed 150 structures but the incident commander, Todd Derum, told the Associated Press that he thinks hundreds of homes have likely been destroyed.