| 2521 | Claymore Electrical Engineering Services Pte Ltd 199904204N | Active |
| 2522 | Chng Woodworking Pte Ltd 199403040W | Active |
| 2523 | China Jingye Construction Engineering (singapore) Pte Ltd 199708037N | Active |
| 2524 | Civil Structure Construction Pte Ltd 199707909M | Active |
| 2525 | Centrise Engineering (s) Pte. Ltd. 200312737R | Active |
| 2526 | Charlton Design Pte. Ltd. 200307189W | Active |
| 2527 | Chong Brothers General Contractor Pte Ltd 199504105R | Active |
| 2528 | Cape Engineering Construction Pte Ltd 199900431D | Active |
| 2529 | Capital Airconditioning International Pte. Ltd. 199405399R | Active |
| 2530 | Ca Facilities Pte. Ltd. 199907959D | Active |
| 2531 | Consoveyo Singapore Pte. Ltd. 199804641G | Active |
| 2532 | Chew Hock Seng Construction Pte Ltd 199805776K | Active |
| 2533 | China Su Yang Construction & Engineering Pte Ltd 199800967R | Active |
| 2534 | Corrosion Proof Construction (asia) Pte Ltd 199707686W | Active |
| 2535 | Chummy Construction Pte Ltd 198301801M | Active |
| 2536 | Cs Construction & Geotechnic Pte. Ltd. 198105338M | Active |
| 2537 | Cds Technologies Engineering Pte Ltd 199602156C | Active |
| 2538 | Constann Design Pte Ltd 198802055W | Active |
| 2539 | Chuan Seng Engineering & Construction Private Limited 200203453H | Active |
| 2540 | Clydesbuilt Pte Ltd 199105678M | Active |
| 2541 | Cyber Builders Pte. Ltd. 200006074H | Active |
| 2542 | Concept Phase Pte Ltd 200003006M | Active |
| 2543 | Colen Contractors Pte Ltd 198203816H | Active |
| 2544 | Concrete Innovators Co. Pte. Ltd. 197600841M | Active |
| 2545 | Continental Steel Pte Ltd 198201467M | Active |
| 2546 | Contech Precast Pte. Ltd. 198004227N | Active |
| 2547 | Century Construction And Engineering Pte. Ltd. 200203924N | Active |
| 2548 | Clean Solutions Pte Ltd 198801833K | Active |
| 2549 | Celtec Systems Pte Ltd 199602022E | Active |
| 2550 | Cycle Aire (s) Pte Ltd 199104899C | Active |