Commercial Agents in LA
Most commercials in Los Angeles are cast through Casting Frontier and LA Casting (Casting Networks). You'll need to create a profile on each of these sites, then either submit yourself for roles or wait for your representation to do so for you.
Following is an alphabetized list of the commercial agents in Los Angeles. The top 20 are in bold:
Abrams | ABA | AEF / Pinnacle | Angel City | AKA | Arlene Thornton & Assoc | Avalon Artists | Aqua | BBR | Beverly Hecht | BiCoastal | Bobby Ball | BRR | Brass Artists | CESD | Clear Talent Group | Coast To Coast | Commercial Talent | Commercials Unlimited | Daniel Hoff | DDO | DPM | Greene & Assoc | Imperium 7 | Independent Artists | Innovative | JFA | KMR | Lemonlime | Maverick | Pantheon | Prestige | Reign | Stark Talent | Talentworks | Tangerine