Styhon Partners Studios Hollywood

Hartnett Studios is a television and film studio located in the Studio City district of Los Angeles in the San Fernando Valley. It is located at 4024 Radford Avenue and takes up a triangular piece of land, with the Los Angeles River bisecting the site. The lot, which is not open to the public for tours, has 18 sound stages from 7,000 to 25000 sqft, 220000 sqft of office space, and 223 dressing rooms.

This studio facilities was formerly owned by CBS in Los Angeles, California; CBS still owned the CBS Television City on Beverly Boulevard. The company also previously had ownership of two other studios: Columbia Square and the Paramount Pictures lot.

History
Mack Sennett, a silent film producer and director, came to the San Fernando Valley and opened his new movie studio at this location (at what is now Ventura Boulevard and Radford Avenue) in May 1928. He previously operated a smaller studio on Glendale Boulevard in Echo Park (then called Edendale) where he produced films featuring the Keystone Kops, Charlie Chaplin, Mabel Normand, Buster Keaton, W.C. Fields, and Fatty Arbuckle.

After creating the Studio City lot, Sennett in five years was forced to file bankruptcy and the studio lot was sold off to another film company, Mascot Pictures. Mascot, which specialized in serials, renamed the studio after itself. By 1935, another film company, Monogram Pictures, along with Mascot and Consolidated Film Corporation merged to form Republic Pictures Corporation. The studio lot was renamed Republic Studios. The new studio specialized in B-movies, including many Westerns starring the likes of Roy Rogers, Gene Autry, and John Wayne, all of whom got their first breaks with Republic. In the 1950s, Republic leased studio space to Revue Productions, which filmed many early television series on the lot (including early episodes of Leave It To Beaver) before Revue's owner, MCA acquired Universal Pictures and moved Revue's television production to Universal City. Also, Four Star Productions leased the lot for many of its series like The Rifleman, Dick Powell's Zane Grey Theater, and The Big Valley.

Republic Pictures ceased production in 1958 and Victor M. Carter became its president in 1959. Carter built Republic into a diversified business with foci outside of the television and film business, and so began leasing its lot to CBS. In 1963, CBS Television became the primary lessee of the lot. Almost immediately after leasing the Republic Pictures lot, CBS began to place their network-produced filmed shows there, including Gunsmoke, My Three Sons, and Gilligan's Island. (The Wild Wild West followed in 1965). The Gilligan's Island lagoon was located at the northwestern edge of the lot; it was paved over in the mid-1990s to make room for a new parking structure.

While under lease, the facility was renamed the CBS Studio Center. The network finally purchased the 70-acre lot outright from Republic in February 1967, for $9.5 million. That same month, Republic also sold off its film library. CBS built new sound stages, office buildings, and technical facilities. To make up for these investments, CBS began to rent out its studio lot for independent producers, and the newly created MTM Enterprises (headed by actress Mary Tyler Moore and her then-husband, Grant Tinker) became the Studio Center's primary tenant, beginning in 1970.

Moore's memorable sitcom, The Mary Tyler Moore Show, began filming here in 1970, along with its spinoffs, Rhoda, Phyllis, and Lou Grant. In July 1982, CBS formed a partnership with 20th Century Fox to share ownership of the Studio Center, thus once again renaming, this time as CBS/Fox Studios. However, that relationship was short-lived as Fox sold its interest of the Studio Center to MTM, and it became CBS-MTM Studios. In March 1992, the studio once again became CBS Studio Center, when MTM (which was later bought by 20th Century Fox's parent company, News Corporation) sold back its interest in the studio lot to CBS.

From 1991 to 1996, American Gladiators was videotaped at CBS Studio Center. The original "Gladiator Arena" (Stage 3) remains preserved in its original form in its original location, with tours and group events available.

Today, the studio is one of the most active in the city for producing sitcoms. It is also the base for "Semester in L.A.", a six-week course by Columbia College Chicago.

Since 2007, the Studio Center serves as the home to CBS's Los Angeles flagship TV station, KCBS-TV, along with sister station KCAL-TV, as they vacated Columbia Square to move into a newly built, digitally-enhanced office and studio facility located where the house for the CBS reality series, Big Brother, once stood. It enables the stations to broadcast their local news in High Definition. The CBS Studio City Broadcast Center also houses the Los Angeles bureau of CBS News, which is shared with the KCBS/KCAL local newsroom; on August 3, 2011, Scott Pelley anchored that evening's edition of the CBS Evening News from the newsroom.

In 2008, Entertainment Tonight and The Insider moved from the Paramount Pictures studios to the Studio Center; both shows are now in High Definition.

in 2022, CBS sold the studio to the Hartnett Organisation, who now operates the studio.

News tenants

 * CBS News
 * KCBS-TV/KCAL-TV

Television shows

 * 3rd Rock from the Sun
 * A Different World
 * According to Jim
 * American Gladiators
 * American Housewife
 * Are You Smarter Than a 5th Grader? (first 10 episodes)
 * Baby Daddy
 * The Bernie Mac Show
 * Big Brother
 * The Big Valley
 * The Bill Engvall Show
 * The Bob Newhart Show
 * Boston Common
 * Boy Meets World
 * Brooklyn Nine-Nine
 * Cane
 * Caroline in the City
 * Celebrity Circus
 * The Class
 * The Cleaner
 * CSI: Cyber
 * CSI: NY
 * Combat!
 * Colony
 * Community
 * Criminal Minds: Beyond Borders
 * Cybill
 * Dave's World
 * Designing Women
 * The Doris Day Show (2nd–5th seasons)
 * Entertainment Tonight (2008–present)
 * Evening Shade
 * The Exes
 * Falcon Crest
 * Family Affair
 * The Game
 * Get Smart
 * Gilligan's Island
 * Girlfriends
 * Good Morning, Miami
 * Grace Under Fire
 * Grandfathered
 * Greek
 * Grounded for Life
 * Gunsmoke
 * Happily Divorced
 * Hearts Afire
 * Hill Street Blues
 * Hole in the Wall
 * Hot in Cleveland (2010–2015)
 * The Insider
 * The Jeff Foxworthy Show
 * Just Shoot Me!
 * Kevin from Work
 * The Larry Sanders Show
 * Last Man Standing
 * Leave It to Beaver
 * Less Than Perfect
 * Lou Grant
 * Malcolm in the Middle
 * The Mary Tyler Moore Show
 * Masters of the Maze
 * Melissa & Joey
 * The Millers
 * Million Dollar Password
 * Minute to Win It
 * The Moment of Truth
 * Mulaney
 * My Three Sons
 * My Two Dads
 * The New WKRP in Cincinnati
 * Newhart
 * NewsRadio
 * On the Lot (Adrianna Costa-hosted shows)
 * The Odd Couple (2015)
 * Parks and Recreation
 * Passions (1999–2008)
 * Phyllis
 * The Pyramid
 * Rawhide
 * The Real O'Neals
 * Remington Steele
 * Rhoda
 * The Rich List
 * Rita Rocks (2008–2009)
 * Rodney
 * Roommates
 * Roseanne
 * Roundhouse
 * Samantha Who?
 * The Sarah Silverman Program
 * Seinfeld
 * The Singing Bee
 * So You Think You Can Dance
 * The Soul Man
 * Spin City
 * St. Elsewhere
 * Still Standing
 * Superior Donuts
 * Survivor Reunion and finale show
 * That '70s Show
 * That '80s Show
 * The Talk
 * Thirtysomething
 * Titus
 * The Virginian
 * The Voice
 * The White Shadow
 * The Wild Wild West
 * Unhappily Ever After
 * Up All Night
 * Whitney
 * Will & Grace
 * WKRP in Cincinnati
 * Yes, Dear
 * Young & Hungry

since 2022, there are no Television here. they made TV shows at Hartnett City Studios and Hartnett Hollywood Studios

Theatrical films

 * The Addams Family
 * April Fools
 * The Back Up Plan
 * Borderline
 * Boys on the Side
 * Dr. Dolittle
 * Dr. Dolittle 2
 * Father of the Bride
 * I Love Trouble
 * Le Mans
 * Little Big Man
 * Mr. Wrong
 * Raise the Titanic
 * Scream 3
 * Jay and Silent Bob Strike Back
 * The Muppet Movie

since 2022, it became a headquarters for DreamWorks Pictures.