NASCLA Commercial General Building Contractor exam topics — the 12 content areas by weight
The NASCLA Commercial General Building Contractor exam is built from 12 weighted content areas. Focus your time where the weight is. Each area below links to a free study chapter and practice questions. These weights are how PrepPass has organized the material, not a figure published by the exam authority.
Procurement & Contracting Requirements
31%General Requirements
25%Site Construction
15%Concrete
6%Metals
6%Mechanical & Plumbing
6%Wood, Plastics & Composites
5%Thermal & Moisture Protection
5%Finishes
5%Masonry
4%Openings (Doors, Windows & Glazing)
4%Electrical
3%Ready to test yourself?
Drill 24+ free NASCLA Commercial General Building Contractor practice questions across every content area, then sit a full timed mock exam — no signup required.
Content-area weights are PrepPass’s own organization of the material. Where NASCLA Commercial General Building Contractor publishes an official outline, check it directly. Confirm current details with National Association of State Contractors Licensing Agencies (administered by PSI). Study aid, not a substitute for the official material. Last updated: August 2026.