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NASCLA Commercial General Building Contractor Study Guide (2026)

This is the free study guide for the NASCLA Commercial General Building Contractor exam — the same content areas the exam tests, written to the official outline. Read any chapter online free below, then drill the material with 24+ free practice questions and a full timed mock exam.

Last updated: August 2026.

Open the full study guideEvery chapter, in one place — free to read online.

The 12 chapters

  1. 1Procurement & Contracting Requirements27% of the exam
  2. 2General Requirements22% of the exam
  3. 3Site Construction13% of the exam
  4. 4Concrete5% of the exam
  5. 5Metals5% of the exam
  6. 6Mechanical & Plumbing5% of the exam
  7. 7Wood, Plastics & Composites4% of the exam
  8. 8Thermal & Moisture Protection4% of the exam
  9. 9Finishes4% of the exam
  10. 10Masonry3% of the exam
  11. 11Openings (Doors, Windows & Glazing)3% of the exam
  12. 12Electrical3% of the exam

Practice what you read

Reading is step one; recalling it under exam pressure is what passes. Drill free NASCLA Commercial General Building Contractor practice questions, then sit a full timed mock exam.

Free practice questions →Timed mock exam →Cram sheet →

Educational summary, not a substitute for the official material — always confirm current details with National Association of State Contractors Licensing Agencies (administered by PSI). Last updated: August 2026.

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