A list of film studios that existed in Hollywood and the surrounding Los Angeles area in July of 1923. Remarkably, some are still in existence or under a different name.
Taken from: http://allanellenberger.com/tag/paramount/
Better Pictures Service, 780 Gower Street, Hollywood (later RKO, now part of Paramount)
Berwilla Studio, 5821 Santa Monica Blvd., Hollywood (now a warehouse).
Brentwood Studio, 4811 Fountain Avenue, Hollywood.
Buster Keaton Studio, 1025 Lillian Way, Hollywood.
Century Film Corp., 6100 Sunset Blvd., Hollywood.
Charlie Chaplin Studio, 1416 La Brea Avenue, Hollywood (now Jim Henson Studios).
Christie Comedies, 6101 Sunset Blvd., Hollywood.
Cosmosart, 3700 Beverly Blvd., Los Angeles.
Fine Arts Studios, 4500 Sunset Blvd., Hollywood.
Fox Studio, North Western Avenue, Hollywood.
Francis Ford Studios, 6040 Sunset Blvd., Hollywood.
Fred Caldwell Productions, 4513 Sunset Blvd., Hollywood.
Garson Studio, 1845 Glendale Blvd., Edendale.
Golden West Studios, 4011 Lankersham Blvd., Studio City.
Grand Studio, 1438 Gower Street, Hollywood.
Hollywood Studios, 6642 Santa Monica Blvd., Hollywood.
Horsley Studios, 6060 Sunset Blvd., Hollywood.
Lasky Studio, 1520 Vine Street, Hollywood.
Mayer-Schulberg Studios, 3800 Mission Road, Los Angeles.
Metro Studio, Romaine and Cahuenga Avenue, Hollywood.
Pickford-Fairbanks Studio, 7100 Santa Monica Blvd., Hollywood (later Samuel Goldwyn Studios, The Lot).
Principal Pictures Corp., 7250 Santa Monica Blvd., Hollywood.
R-C Studios, Melrose and Gower Street, Hollywood.
Sennett Studio, 1712 Glendale Blvd., Edendale.
United Studios, 5341 Melrose Avenue, Hollywood (now Paramount Studios).
Universal Studio, Universal City (still there).
Vitagraph Studios, 1708 Talmadge Avenue, Hollywood.
Waldorf Studios, 6070 Sunset Blvd., Hollywood.
Keaton (from 1920-closing) is old Metro Stage “A” used for a time by Chaplin. Buster moved to build a large enclosed building where the open stage area had been. A few other features were constructed, but the main office dated back to the Metro opening and the property was surrounded for the most part by a wood fence line.