The Australian star, who has made a fortune both in front of and behind the cameras, earned a profit of $6 million on the Mediterranean style home, which he purchased in 2003 for $24 million.
The Lethal Weapon, Braveheart and The Passion of the Christ star has sold his second American home in just weeks. Earlier this month, Gibson sold his Connecticut residence for $40 million.
Gibson and his family still own three homes around the world, in Australia, Costa Rica and a private island in Fiji.