The original cast consisted of Ray J, Soulja Boy, Omarion and his girlfriend Apryl Jones, Lil' Fizz and his ex-girlfriend Moniece Slaughter, Teairra Marí and former celebrity publicist Hazel-E, with Ray's assistant Morgan Hardman, Teddy Riley's daughter Nia Riley, Fizz's girlfriend Amanda Secor, Yung Berg, radio personality Yesi Ortiz, club promoter Sincere Show, socialite Nikki Mudarris and video vixen Masika Kalysha as supporting cast members. It has a sprawling supporting cast, who (in most cases) share the same amount of screen time and storyline focus as the show's leads. The series is notable for its high profile cast, with the youngest and most established group of cast members in the franchise thus far. Love & Hip Hop: Hollywood revolves around the personal and professional struggles of several R&B artists and rappers in Los Angeles' music scene. bottom row: Teairra, Princess, Nikki and Ray J. The cast of the fifth season, top row: Lyrica, Brooke, A1, K.

On August 18, 2014, VH1 announced Love & Hip Hop: Hollywood would make its series premiere on September 15, 2014. Berg was then weaved into a storyline with Hazel-E, a relationship he claims was contrived for television. In interviews in 2017, Berg revealed he had filmed scenes with Joie as a couple, before Joie was fired three months into taping. On August 6, 2014, it was announced that Soulja Boy had joined the show. On March 31, 2014, the series began filming, with Ray, Teairra, Love, Berg, Joie, Ortiz, Ray's assistant Morgan Hardman, Omarion and his girlfriend Apryl Jones confirmed as part of the cast. The cast around this time reportedly included publicist-turned-rapper Hazel-E, Brooke Valentine, radio DJ Yesi Ortiz and video vixen Bria Myles. On January 10, 2014, it was reported that producers were having difficulties finalising casting, after Ray J's contractional obligations to Bad Girls All-Star Battle lead to some complications. On October 15, 2013, Tran reportedly backed out of the show at her (then) boyfriend Chris Brown's insistence, after hearing that producers were in talks with Brown's ex Jasmine Sanders to join the cast, tweeting 'Definitely not going to be on Love & Hip Hop LA lol'.

Ray J was also offered to star, as both lead and co-producer, with his protege Yung Berg and love interests Teairra Marí and Princess Love rounding out the cast. It’s feeling like we’ll land in L.A., we’ve got some great stories to tell in L.A.” On October 11, 2013, it was reported that producers had approached Tyga, Blac Chyna, Karrueche Tran, LoLa Monroe, Bow Wow's ex-girlfriend Miss Joie and Christina Milian's boyfriend Jas Prince to star in Love & Hip Hop: L.A. In an interview, creator Mona Scott Young confirmed that the concept was being considered, along with possible spin-offs in Houston and New Orleans, saying “we’ve been looking in a few cities. Rumors of a Los Angeles-based spin-off of Love & Hip Hop began circulating in September 2013.

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