| IGC Security Services Pte Ltd | Central | Condominium | SSO | SSO | Toa Payoh |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Hougang |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| DP Quest Investigation Consultancy Pte Ltd | West | Condominium | SSO | SS | Boon Lay |
| Ascentiaa Security Management Pte Ltd | Island Wide | Condominium | SS | SS | Boon Lay |
| Acestes Pte Ltd | East | Condominium | SSO | SSO | Sengkang |
| Aero Asia Security Systems Pte Ltd | South | Condominium | SO | SO | Redhill |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SO | - |
| Chang & Chang Security Management Pte. Ltd. | Central | Condominium | SS | SO | - |
| Dragnet Smartech Security Pte Ltd | Central | Condominium | SS | SS | - |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | - |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | - |
| Elitez Security Pte Ltd | East | Condominium | SO | SO | Punggol |
| SMS Investigation & Security Pte Ltd | East | Condominium | SSO | SSO | Pasir Ris |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SS | Pioneer |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SSO | Yishun |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SSO | SSO | Bukit Batok |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Hougang |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Hougang |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SS | Woodlands |
| Danmax Security Management Pte Ltd | West | Condominium | SO | SO | - |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SS | Pioneer |
| First Security & Private Investigation (Singapore) Pte Ltd | Central | Condominium | SO | SO | - |
| Danmax Security Management Pte Ltd | West | Condominium | SO | SO | - |
