236220 – Commercial and Institutional Building Construction

Construction (including new work, additions, alterations, maintenance, and repairs) of commercial and institutional buildings and related structures

238910 – Site Preparation Contractors

Site preparation activities, such as excavating and grading, demolition and disposal of buildings and other structures, utility disconnects, earthmoving, and land clearing.

561720 – Janitorial Services

Professional cleaning of building interiors and windows.