The series stars Larry David as an extreme version of himself, accompanied by fictional re-creations of his 'real friends', usually played by themselves. Ted Danson, Mary Steenburgen, Wanda Sykes, and Richard Lewis all have recurring roles as characters based upon themselves. The show is set and filmed in various affluent Westside communities of (and occasionally the downtown area of) the City of Los Angeles, California, as well as the adjacent incorporated cities of Beverly Hills, Culver City and Santa Monica, California. Larry David's actual place of residence was, and may still be (since his divorce from his wife Laurie), in the Pacific Palisades area of the Westside. During the run of the series, filming has been staged in various rented single-family residences around the Westside.

Source: Wikipedia.org