| Business | Phone |
| Costello Rogers & Assoc Inc 14011 Ventura Blvd # 224, Sherman Oaks 91423 | (818) 386-5568 |
| Seflin Investigations Inc 4717 Van Nuys Blvd, Sherman Oaks 91403 | (818) 788-6904 |
| A & I Audits & Investigations Sherman Oaks 91403 | (818) 263-6118 |
| Collective Intelligence Inc 4954 Van Nuys Blvd # 202, Sherman Oaks 91403 | (818) 788-7015 |
| I Q Tronics Inc 4499 Van Nuys Blvd, Sherman Oaks 91403 | (818) 501-2770 |
| Martin Investigation Agency 13601 Ventura Blvd # 129, Sherman Oaks 91423 | (818) 786-2000 |
| Liberty Investigative Services 13351-D Riverside Drive #593, Sherman Oaks 91423 | (818) 430-1916 |