Plumbing, Heating, and Air-Conditioning Contractors

Landscaping Services

Offices of Physicians (except Mental Health Specialists)

Computer Systems Design Services

Janitorial Services

Administrative Management and General Management Consulting Services

Water Supply and Irrigation Systems, Water and Sewer Line and Related Structures Construction, Concrete Pipe Manufacturing, Farm Machinery and Equipment Manufacturing

Home Centers, Paint and Wallpaper Stores

All Other Specialty Trade Contractors

Lessors of Nonresidential Buildings (except Miniwarehouses)

Tire Retreading, Motor Vehicle Supplies and New Parts Merchant Wholesalers, Tire and Tube Merchant Wholesalers, Recyclable Material Merchant Wholesalers, Tire Dealers

Farm Supplies Merchant Wholesalers, Family Clothing Stores, Pet and Pet Supplies Stores

All Other Specialty Trade Contractors

Septic Tank and Related Services

Recyclable Material Merchant Wholesalers, Environmental Consulting Services, Security Systems Services (except Locksmiths), Solid Waste Collection, Other Waste Collection

Painting and Wall Covering Contractors

Engineering Services, Administrative Management and General Management Consulting Services

Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing

Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Main

Drycleaning and Laundry Services (except Coin-Operated)

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers, Refrigeration Equipment and Supplies Merchant Wholesalers

All Other Specialty Trade Contractors