CSLB General Building (B)

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Free practice for the California CSLB General Building (B) trade exam — the craft/classification test you take in addition to the Law & Business exam. Original questions in English, 中文 and Español, with 2025 California code references.

Sen Lin, PrepPass Founder · Verified against California CSLB · How we review
Reviewed by Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — verify)
To get a B license you must pass BOTH exams — the Law & Business exam and this General Building (B) trade exam. Both are about 3.5 hours at a PSI center. CSLB does not publish the exact question count or passing score for the trade exam; you're told the passing mark at the test site.
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Practice stays free. The full CSLB Class B — General Building (Trade Exam) study guide is the material itself, taught start to finish — a downloadable PDF + EPUB you keep.

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What the B trade exam covers

30%
Core Trades
concrete · electrical · plumbing · HVAC · roofing · earthwork
20%
Framing & Structural
framing · roof · seismic hardware · siding & stucco · decks & stairs
20%
Finish Trades
drywall · tile · flooring · cabinetry · windows & doors · paint
15%
Planning & Estimating
plans & specs · cost takeoffs · inspection · coordination
15%
Safety
Cal/OSHA · traffic control · environmental
Free cheat sheet (PDF) →Study guide →Browse all questions →CSLB Law & Business exam →

Frequently asked questions

Is PrepPass's CSLB General Building (B) Trade practice free?

Yes — every CSLB General Building (B) Trade practice question, study guide, and lesson on PrepPass is free. A full timed mock exam is also included at no cost.

How many CSLB General Building (B) Trade practice questions does PrepPass have?

PrepPass currently has 700 original CSLB General Building (B) Trade practice questions across 5 topic areas, and every question comes with a written answer explanation.

What languages is PrepPass's CSLB General Building (B) Trade prep available in?

English, 中文 (Chinese), Español (Spanish), and Tiếng Việt (Vietnamese).

How are PrepPass's CSLB General Building (B) Trade questions written?

They are original questions written by PrepPass from public-domain statutes and official exam blueprints — never copied from the real exam. Read our question methodology →

Is PrepPass affiliated with the licensing board or exam provider?

No. PrepPass is an independent study resource and is not affiliated with, endorsed by, or connected to any licensing board or official exam provider.

Can I practice CSLB General Building (B) Trade on my phone?

Yes — PrepPass runs in any mobile or desktop web browser, with no app to download.

Own the complete CSLB Class B — General Building (Trade Exam) guide — PDF + EPUB, $14.99 →

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