| NAC 624.140. Classification A: General engineering. |
| NAC 624.150. Classification A: Subclassifications. |
| NAC 624.160. Classification B: General building. |
| NAC 624.170. Classification B: Subclassifications. |
| NAC 624.180. Classification AB: General building and general engineering. |
| NAC 624.190. Classification C-1: Plumbing and heating contracting; subclassifications. |
| NAC 624.200. Classification C-2: Electrical contracting; subclassifications. |
| NAC 624.210. Classification C-3: Carpentry, maintenance and minor repairs; subclassifications. |
| NAC 624.220. Classification C-4: Painting and decorating; subclassifications. |
| NAC 624.230. Classification C-5: Concrete contracting. |
| NAC 624.240. Classification C-6: Erecting signs; subclassifications. |
| NAC 624.250. Classification C-7: Elevation and conveyance; subclassifications. |
| NAC 624.260. Classification C-8: Glass and glazing contracting. |
| NAC 624.270. Classification C-9: Movement of buildings. |
| NAC 624.280. Classification C-10: Landscape contracting. |
| NAC 624.290. Classification C-11: Spraying mixtures containing cement. |
| NAC 624.300. Classification C-13: Using sheet metal. |
| NAC 624.310. Classification C-14: Steel reinforcing and erection; subclassifications. |
| NAC 624.320. Classification C-15: Roofing and siding; subclassifications. |
| NAC 624.330. Classification C-16: Finishing floors; subclassifications. |
| NAC 624.340. Classification C-17: Lathing and plastering; subclassifications. |
| NAC 624.350. Classification C-18: Masonry. |
| NAC 624.360. Classification C-19: Installing terrazzo and marble; subclassifications. |
| NAC 624.370. Classification C-20: Tiling; subclassifications. |
| NAC 624.380. Classification C-21: Refrigeration and air-conditioning; subclassifications. |
| NAC 624.400. Classification C-23: Drilling wells and installing pumps, pressure tanks and storage tanks. |
| NAC 624.410. Classification C-24: Erecting scaffolds and bleachers. |
| NAC 624.420. Classification C-25: Fencing and equipping playgrounds. |
| NAC 624.430. Classification C-26: Institutional contracting; subclassifications. |
| NAC 624.440. Classification C-27: Individual sewerage. |
| NAC 624.450. Classification C-28: Fabricating tanks; subclassifications. |
| NAC 624.470. Classification C-30: Installing equipment to treat water. |
| NAC 624.480. Classification C-31: Wrecking. |
| NAC 624.500. Classification C-33: Installing industrial machinery. |
| NAC 624.530. Classification C-36: Installing urethane; subclassifications. |
| NAC 624.540. Classification C-37: Solar contracting; subclassifications. |
| NAC 624.550. Classification C-38: Installing equipment used with liquefied petroleum and natural gas; subclassifications. |
| NAC 624.560. Classification C-39: Installing heaters. |
| NAC 624.570. Classification C-40: Specialties not authorized by other classifications. |
| NAC 624.572. Classification C-41: Fire protection contracting; subclassifications. |
| NAC 624.574. Classification C-42: Constructing, altering or improving video service networks. |
| NAC 624.580. License to build upon or improve own commercial property. |
| NAC 624.585. Abatement of asbestos without license classified for removal of asbestos. |