238110 Poured concrete foundation and structure contractors Grouting (i.e., reinforcing with concrete) 238150 Glass and glazing contractors Glass coating and tinting (except automotive) contractors 238160 Roofing contractors Solar reflecting coating, roof, application 238190 Other foundation, structure, and building exterior contractors Awning installation Epoxy application contractors Ornamental metal work installation contractors 238210 Electrical contractors and other wiring installation contractors Burglar alarm system, electric, installation only Cable splicing, electrical or fiber optic Cable television hookup contractors Communication equipment installation Electronic control system installation Fire alarm system, electric, installation only Intercommunication (intercom) system installation Sound equipment installation Telecommunications equipment and wiring (except transmission line) installation Telephone installation contractors 238220 Plumbing, heating and air-conditioning contractors Air system balancing and testing Air-conditioning system (except window) installation Boiler, heating, installation Dust collecting and bag house equipment installation Fuel oil burner installation Gas line installation, individual hookup, contractors Heating equipment installation Heating contractors Lawn sprinkler system installation Refrigeration system (e.g., commercial, industrial, scientific) installation Water system balancing and testing contractors 238290 Other building equipment contractors Boiler and pipe insulation installation Dismantling large-scale machinery and equipment Gasoline pump, service station, installation Lightning rod and conductor installation Machinery and equipment, large-scale, installation Machine rigging Millwrights Motor vehicle garage and service station mechanical equipment (e.g., gasoline pumps, hoists) installation Power generating equipment installation 238310 Drywall and insulation contractors Fireproofing buildings 238320 Painting and wall covering contractors Electrostatic painting, on-site, contractors Paint and wallpaper stripping Paperhanging or removal contractors Ship painting contractors Wallpaper stripping Whitewashing contractors 238330 Flooring contractors Linoleum, installation only Parquet flooring installation Resilient floor tile or sheet (e.g., linoleum, rubber, vinyl), installation only Vinyl flooring contractors 238340 Tile and terrazzo contractors Ceramic tile installation Tile (except resilient) laying and setting 238350 Finish carpentry contractors Countertop, residential-type, installation Ship joinery contractors 238390 Other building finishing contractors Bathtub refinishing, on-site Building fixture and fitting (except mechanical equipment) installation Caulking (i.e., waterproofing) contractors Coating concrete structures with plastics Dampproofing contractors Concrete coating, glazing or sealing Waterproofing contractors Weather stripping installation Window shade and blind installation 238910 Site preparation contractors Boring, for building construction Core drilling and test boring for construction Grave excavation contractors Test boring for construction 238990 All other specialty trade contractors Artificial turf installation Cable splicing (except electrical or fiber optic) Cleaning building interiors during and immediately after construction Dewatering contractors Fence installation (except electronic containment fencing for pets) House moving (i.e., raising from one site, moving, and placing on a new foundation) Manufactured (mobile) home set up and tie-down work Posthole digging Sandblasting, building exterior Scaffold erecting and dismantling |