| Inhouse Employer | Central | Mix-Development | Security Mgt | SS | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | SS | Hougang |
| TwinRock Global | Central | - | Security Mgt | SS | Hougang |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Hougang |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Hougang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Hougang |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Hougang |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Hougang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Hougang |
| William Secure Solutions Pte Ltd | South | Condominium | SS | SS | Hougang |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Hougang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Hougang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Hougang |
| SATS Ltd | East | - | OE | SS | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Hougang |
| Inhouse Employer | West | In-House | OM | SS | Hougang |
| TwinRock Global | Central | - | Security Mgt | SS | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | SS | Hougang |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Hougang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Hougang |
| Soverus Pte Ltd | South | In-House | SS | SS | Hougang |
| Inhouse Employer | Central | Hotel | SS | SS | Hougang |
| Union Security Services Pte. Ltd. | Central | Industrial / Factory | SS | SS | Hougang |
