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IRS Business Activity Codes
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NAICS 2002 Codes
(Click on Number for more info)
SIC Codes
NumberDescriptionNumberDescriptionNumberDescription
531110Lessors of Residential Buildings & Dwellings 531110Lessors of Residential Buildings & Dwellings
Also called:
Lessors of residential buildings and dwellings
Housing authorities operating residential buildings
6513Operators of Apartment Buildings
6514Operators of Dwellings Other Than Apartment Buildings
531120Lessors of Nonresidential Buildings 531120Lessors of Nonresidential Buildings
Also called:
Lessors of nonresidential buildings (except miniwarehouses)
6512Operators of Nonresidential Buildings
531110Lessors of Residential Buildings & Dwellings 531110Lessors of Residential Buildings & Dwellings
Also called:
Lessors of residential buildings and dwellings
Housing authorities operating residential buildings
6531Real Estate Agents and Managers
561790Other Services to Buildings & Dwellings 561790Other Services to Buildings & Dwellings
Also called:
Pressure washing (e.g., buildings, decks, fences)
Other Services to Buildings and Dwellings
4959Sanitary Services, N.E.C.
7349Building Cleaning and Maintenance Services, N.E.C.
7389Business Services, N.E.C.
7699Repair Shops and Related Services, N.E.C.
236200Nonresidential Building Construction 236220**Commercial and Institutional Building Construction
Also called:
Fire and flood restoration of commercial and institutional buildings

1542General Contractors Nonresidential Buildings, Other than Industrial Buildings and Warehouses
332300Architectural & Structural Metals Manufacturing 332311Prefabricated Metal Building and Component Manufacturing
Also called:
Portable buildings, prefabricated metal, manufacturing
Farm buildings, prefabricated metal, manufacturing
more detail...
3448Prefabricated Metal Buildings and Components
321900Other Wood Product Manufacturing 321992Prefabricated Wood Building Manufacturing
Also called:
Farm buildings, prefabricated wood, manufacturing
Prefabricated wood buildings manufacturing
more detail...
2452Prefabricated Wood Buildings and Components
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1997 NAICS Information
** In 2002, NAICS codes were updated from the 1997 codes to reflect changes in the structure of U.S. industries. The search term you entered matches a 1997 code, and the industry shown replaces all or part of the 1997 industry. The table below shows the relationship of the 1997 codes to the 2002 codes for industries above that were updated.
1997 NAICS Code Matching
2002 NAICS Codes
Explanation of Parts
233220Multifamily Housing Construction
Also called:
Custom buildings, residential (except single family), general construction contractors
Renovating residential (except single family) buildings
more detail...
236116New Multifamily Housing Construction (except Operative Builders)General Contractors
236117New Housing Operative Builders (pt)Operative Builders
236118Residential Remodelers (pt)Remodeling Contractors
236220**Commercial and Institutional Building Construction (pt)Barrack and Dormitory Construction
    
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