| Sr | Code | Description |
| 1 | ME07(v) | General Mechanical Works only |
| 2 | EE08 | External Telecommunication Works |
| 3 | EE10 | Miscellaneous Specialized |
| 4 | CE04(v) | Irrigation Only |
| 5 | CE02 | Bridge Structures, Piling |
| 6 | CE06 | Tunneling and underpinning works |
| 7 | CE09 | Sewerage Works, Water Supply |
| 8 | CE01 | Road and Pavements, Drainage & Retaining Structure, Signcraft Installation |
| 9 | BC03 | High Rise Buildings |
| 10 | ME01 | Installation, Commissioning maintenance and repairs of air conditioning, refrigeration, cold rooms and ventilation system |
| 11 | ME04 | Building Automation System |
| 12 | ME06 | Specialized Fabrication and Treatment, Medical Equipment, Kitchen and Laundry Equipment, Heat Recovery System, Pollution Control System, Miscellaneous Mechanical Equipment, Chiller for Power Generation, Specialized Plant |
| 13 | EE03 | Building Automation System & Energy Generation System |
| 14 | EE06 | Specialized Lighting System |
| 15 | CE11(i) | General engineering Works only |
| 16 | EE01 | Sound System |
| 17 | EE09 | IT & Software Engg |
| 18 | BC04 | General Buildings and Maintenance |
| 19 | EE11(vi) | General Electrical Works Only |
| 20 | CE05 | Offshore construction works including related works |
| 21 | CE08 | Installation, maintenance and repair of oil and gas pipelines |
| 22 | CE10 | General Civil Engineering Works, Slope Protection System, Concrete Repairs, Soil Investigation and Stabilization, Landscaping & Horticulture, Reclamation Works, General Buildings and Maintenance, Waterproofing |
| 23 | BC01 | Construction of buildings and industrial plants using prefabricated components and systems. Construction of steel framed buildings and industrial plants.
Airports Terminal buildings, Satellite buildings, cargo terminals, air traffic control towers, contact piers, passenger loading bridges
|
| 24 | BC02 | Restoration and Conservation |
| 25 | ME02 | Installation and maintenance of fire alarms, prevention and protection systems |
| 26 | ME05 | Workshop, Mill, Quarry System |
| 27 | EE02 | Security, Safety Surveillance System |
| 28 | EE04 | Low Voltage Installation |
| 29 | EE07 | Telecommunication Installations |
