| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Aljunied |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SS | SS | Aljunied |
| Certis Group | South | Healthcare | SS | SS | Admiralty |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SS | SS | Choa Chu Kang |
| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SS | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Avantec Management Pte Ltd | Central | Condominium | SS | SSS | Queenstown |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Hawkeye Security Solutions Pte Ltd | West | Industrial / Factory | SS | SS | Bukit Panjang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | CSO | Hougang |
| Securus Pte Ltd | East | Condominium | SS | SS | Aljunied |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Bukit Panjang |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Ang Mo Kio |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| Peregrine Security Pte. Ltd. | South | Office Building | SS | SS | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| Union Security Services Pte Ltd | East | Condominium | SS | SSO | Tampines |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSS | Clementi |
| Securus Pte Ltd | East | Condominium | SS | SS | Aljunied |
| Mainguard Security Services Singapore Pte Ltd | Central | Gov Building | SS | SS | Aljunied |
| Securus Pte Ltd | North | Condominium | SS | SS | Marsiling |
