In 1922, oil entrepreneur Alphonzo Bell purchased more than 600 acres of canyon land west of Los Angeles, establishing Bel-Air Estates as a private enclave for the city's wealthiest residents. The original Mission-style building served as Bell's sales office, positioned alongside equestrian stables and miles of canyon trails. Bell famously refused to sell to anyone in the film industry until the Great Depression forced his hand. Once he relented, Hollywood's elite arrived quickly.
The transformation into a luxury hotel came in 1946, when entrepreneur Joseph Drown converted the offices into a lobby, replaced the horse paddock with the estate's signature oval pool, and introduced Swan Lake on the front lawn. The property became a sanctuary for Grace Kelly, Cary Grant, Audrey Hepburn, and Jimmy Stewart. Elizabeth Taylor spent her first honeymoon here, and Marilyn Monroe completed her final photoshoot on the grounds in 1962. A comprehensive renovation in 2011 modernized the infrastructure while preserving the Golden Age character intact, and in 2025 the hotel received the Three MICHELIN Key designation for outstanding service and distinct identity.