New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), Water and Sewer Line and Related Structures Construction, Land Subdivision, Highway, Street, and Bridge Construction

Water and Sewer Line and Related Structures Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Site Preparation Contractors, All Other Specialty Trade Contractors

Plumbing, Heating, and Air-Conditioning Contractors

Other Electric Power Generation, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), Residential Remodelers, Commercial and Institutional Building Construction

Electrician

New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders, Residential Remodelers, Commercial and Institutional Building Construction

Highway, Street, and Bridge Construction, Structural Steel and Precast Concrete Contractors, Site Preparation Contractors, All Other Specialty Trade Contractors, Specialized Freight (except Used Goods) Trucking, Local

All Other Specialty Trade Contractors

Poured Concrete Foundation and Structure Contractors, Flooring Contractors

Roofing Contractors, Historical Sites

New Single-Family Housing Construction (except Operative Builders)

Plumbing, Heating, and Air-Conditioning Contractors

Water and Sewer Line and Related Structures Construction

Plumbing, Heating, and Air-Conditioning Contractors

Electrical Contractors, Security Systems Services (except Locksmiths)