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Contractor license exam prep — free, by state

Getting a contractor license is state-by-state — most states require a written Business & Law and trade exam. Pick your state below for free practice questions with explanations, study guides, and video lessons. No signup.

By state

We only list states with a real state-level contractor exam. More states are being added.

California (CSLB)

Law & Business + trade — the largest licensing state.

Florida (CILB)

Certified GC — national trade + Florida CILB state law.

Georgia

State board GC — Business & Law + NASCLA trade.

Virginia

DPOR Class A/B/C by project value.

North Carolina

NCLBGC building contractor — limited/intermediate/unlimited.

Arizona (ROC)

Registrar of Contractors — Statutes & Rules + trade.

Nevada (NSCB)

State Contractors Board — CMS Business & Law + trade.

Tennessee

Board for Licensing Contractors — $25k threshold.

South Carolina

LLR Contractor's Board — Financial Groups I–V.

National — NASCLA

The NASCLA Accredited Commercial General Building exam is accepted by ~17 states — pass once, license in many.

NASCLA Commercial GB Contractor Exam

115 questions, open-book. Free practice + explanations — accepted for the trade portion in ~17 states.

By trade (California C-licenses)

California licenses specialty trades separately — all require the CSLB Law & Business exam first.

General Building (B)Electrical (C-10)Plumbing (C-36)HVAC (C-20)Landscaping (C-27)Painting (C-33)

Guides & how-to

How to become a licensed contractor

The steps, requirements, and what contractors earn.

Get your California (CSLB) license

A step-by-step CSLB guide — available in English & 中文.

Looking for other trades? Browse all Construction & Trades exams →