- PU-1 Communications
- PU-2 Electrical
- PU-3 Fuel Distribution
- PU-4 Water & Sewer Lines
- PU-5 Water Purification & Sewage Disposal
- S-1 Boring & Tunneling
- S-2 Concrete
- S-3 Insulation
- S-4 Interiors
- S-5 Marine
- S-6 Masonry
- S-7 Metal Erection
- S-8 Railroad
- S-9 Roofing
- S-10 Swimming Pools
- S-11 Asbestos
- A Alarm Systems License
- L Limited Monitoring & Response
- R Registered Installer
- L Limited - Projects of $25,000 or Less
- I Intermediate - Projects of $75,000 or Less
- U Unlimited
- SP-SFD Special Single Family Dwelling
- SP-EL Special Restricted - Elevators & Escalators
- SP-PH Special Restricted - Plumbing & A/C
- SP-WP Special Restricted - Groundwater Pumps
- SP-ES Special Restricted - Electrical Signs
- SP-LV Special Restricted - Low Voltage
- SP-SP Special Restricted - Swimming Pools
- P-I Plumbing Unlimited
- P-II Plumbing Single Family Dwelling
- H-1-I Heating Systems Urdimited1
- H-1-II Heating Systems Single Family dwellings
- H-2 Comfort Cooling Systems over 15 tons capacity
- H-3-I Forced Warm Air Heating Systems Unlimited
- H-3-II Forced Warm Air Heating Systems Single Family Dwelling