North American Industry Classification System

236116

New Multifamily Housing

New multifamily residential housing units, high-rise, garden, town house apartments, and condominiums where each unit is not separated from its neighbors by a ground-to-roof wall, multifamily design-build firms.

236117

Housing Operative Builders

New homes for single-family or multifamily homes such as apartment buildings, condominiums, cottages, cooperative apartments, custom home builders, duplex, garden apartments, high-rise for sale.

236118

Residential Remodelers

Remodeling construction including additions, alterations, reconstruction, maintenance, and repairs of houses and other residential buildings, single-family and multifamily, remodeling design/build.

236210

Industrial Building Construction

New work, additions, alterations, maintenance, and repairs of industrial buildings (except warehouses) such as incinerators, cement plants, blast furnaces, and similar nonbuilding structures.

236220

Commercial and Institutional

Commercial and institutional buildings, stadiums, grain elevators, indoor swimming facilities, airport buildings, fire stations, school buildings, warehouses, barracks, parking garages, arenas, and offices.

237110

Water and Sewer

Water and sewer lines, mains, pumping stations, treatment plants, and storage tanks, new work, reconstruction, rehabilitation, and repairs of storage tanks, pumping stations, water treatment.

237120

Oil and Gas Lines

Oil and gas lines, mains, refineries, and storage tanks, new work, reconstruction, rehabilitation, and repairs of all integral structures, buildings, storage tanks, pumping stations, and refineries.

237130

Power and Communication Lines

Power lines and towers, power plants, and radio, television, and telecommunications transmitting and receiving towers, communication line, transmitting towers, substations, and power plants.

237310

Highway, Street, Bridge

Highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs.

237990

Other Heavy and Civil Engineering

Heavy and civil engineering construction, involving water resources, dredging and land drainage, development of marine facilities, open space improvement, parks and trails, docks, and bulkheads.

238110

Poured Concrete Foundation

Pouring and finishing concrete foundations and structural elements, grout and shotcrete work, gunite, placement, mud-jacking, footing and foundations, retaining wall, concrete floor surfacing, repairs.

238120

Structural Steel and Precast

Erecting and assembling structural steel and precast concrete parts, steel beams, structural steel components, steel rods, bars, rebar, mesh, and cages, reinforced poured-in-place concrete, precast slab.

238130

Framing Contractors

Structural framing and sheathing using materials other than structural steel or concrete, building framing, foundation forming, truss systems, post framing contractors, wood frame components.

238140

Masonry Contractors

Masonry work, historic restoration, stone setting, bricklaying, block laying, marble, granite, slate, exterior stone, masonry pointing, cleaning and grout, stucco contractors, brick, block, stone foundation.

238160

Roofing Contractors

Roofing, bitumen, asphalt shingle, metal, standing seam, roof treatments, spraying, painting, coating, installing skylights, trusses, downspouts, gutters, fascia, soffits, galvanized iron, low slope, copper.

238190

Other Foundation and Structure

Building foundation and structure trades work, curtain wall, metal installation, forms for poured concrete, welding, ornamental metal work, fire escape and proofing, decorative steel and wrought iron work.

238210

Electrical Contractors and Wiring

Installing and servicing plumbing, HVAC, parts and labor, cooling towers, duct work, lawn sprinklers, fire suppression, mechanical, fireplace, natural gas, refrigeration, furnace, sewer.

238220

Plumbing, HVAC Contractors

Installing and servicing plumbing, heating, and air-conditioning equipment including new work, additions, alterations, maintenance, and repairs.

238310

Drywall and Insulation Contractors

Drywall, plaster work, and building insulation work including new work, additions, alterations, maintenance, and repairs.

238910

Site Preparation Contractors

Excavating and grading, demolition of structures, septic system, earthmoving and land clearing, foundation digging, cutting new rights of way, grading, dewatering, trenching, underground tank, wrecking.

238990

All Other Specialty Trade

Specialty trades, billboard erection, outdoor swimming pools, paver, brick, driveway, patio, sidewalk, driveway and parking lot, sandblasting, fence, scaffolding, interlocking block, steeplejack.

541310

Architectural Services

Planning/designing of residential, institutional, commercial, and industrial buildings and structures, design, construction procedures, zoning regs, building codes and materials.

541320

Landscape Architectural Services

Planning and designing the development of land areas for projects, such as parks and other recreational areas, airports, highways, hospitals, schools, land subdivisions, and commercial, industrial, and residential areas.

541330

Engineering Services

Civil, environmental, construction, and mechanical engineering services, applying physics principles design, development, utilization of materials, instruments, structures, processes and systems.

541620

Environmental Consulting

Control of environmental contamination from pollutants, toxic substances, and hazardous materials, identify problems, inspect buildings for hazardous materials, evaluate risks and recommend solutions.

561730

Tree Trimming

Tree and brush trimming along overhead utility lines, tree felling, and maintanence for federal and state parks.