NAICS Codes

• 236220: Commercial & Institutional Building

• 237110: Water & Sewer System Construction

• 423320: Brick, Stone, and Related Construction Material Merchant Wholesalers

• 423390: Other Construction Material Merchant Wholesalers

• 423610: Electrical Apparatus and Equipment

• 423720: Plumbing and Heating Equipment

• 423730: Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers 

• 54161: Project Management

• 561210: Facilities Support Services

• 561790: Other Services to Buildings & Dwellings