| Business | Phone |
| Anderson Detective Agency 343 Soquel Ave # 175, Santa Cruz 95062 | (831) 359-0440 |
| Diane D Cohan-Private Invstgtn Po Box 608, Santa Cruz 95061 | (831) 425-5878 |
| Hughes & Assoc 849 Almar Ave # C462, Santa Cruz 95060 | (831) 469-0303 |
| International Investigations 360 Sand Hill Rd, Santa Cruz 95066 | (831) 440-9017 |
| Lepore Associates 605 Center St, Santa Cruz 95060 | (831) 427-1647 |
| Nuss Investigations 343 Soquel Ave # 110, Santa Cruz 95062 | (831) 466-0148 |
| Robert S Bortnick & Assoc 136 Vernon St, Santa Cruz 95060 | (831) 423-5122 |
| Wallace Research 504 Westdale Dr, Santa Cruz 95060 | (831) 426-4297 |
| Zeal Investigations 1099 38th Ave # 7, Santa Cruz 95062 | (831) 477-0942 |