Construction & Trades
Contractor (CSLB), electrician, plumber, HVAC and other skilled-trade license exams.
CSLB Business & Law
California contractor license (Class A, B, and C). Study guides, 690 practice questions, and a full mock exam.
690 questions · 82 study sections · 4 languages
CSLB General Building (B) Trade
The trade exam you take alongside Law & Business. Original questions across framing, concrete, electrical, plumbing, finish trades & jobsite safety.
700 questions · 5 topic areas · 3 languages
CSLB Electrical (C-10) Trade
The trade exam you take alongside Law & Business. Original questions across services, branch wiring, motors & equipment, testing, and electrical safety — to the 2023 NEC.
500+ questions · 6 topic areas · 3 languages
CSLB Plumbing (C-36) Trade
The trade exam you take alongside Law & Business. Original questions across water supply, drainage-waste-vent, fixtures & water heaters, gas piping, and plumbing safety — to the California Plumbing Code.
360+ questions · 6 topic areas · 3 languages
Master Plumber (UPC/IPC)
Free Master Plumber (UPC/IPC) practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
100+ questions · 5 content areas · practice + mock
Master Electrician (NEC)
Free Master Electrician (NEC) practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
100+ questions · 5 content areas · practice + mock
CSLB Landscaping (C-27) Trade
Free CSLB Landscaping (C-27) Trade practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
100+ questions · 5 content areas · practice + mock
CSLB Painting (C-33) Trade
Free CSLB Painting (C-33) Trade practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
100+ questions · 5 content areas · practice + mock
CSLB HVAC (C-20) Trade
Free CSLB HVAC (C-20) Trade practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
100+ questions · 5 content areas · practice + mock
Journeyman Plumber (UPC/IPC)
Free Journeyman Plumber (UPC/IPC) practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
80+ questions · 5 content areas · practice + mock
Journeyman Electrician (NEC)
Free Journeyman Electrician (NEC) practice questions, study guide and a full timed mock exam — original, with explanations, in English/中文/Español.
80+ questions · 5 content areas · practice + mock
EPA 608 (HVAC Refrigerant)
The EPA Section 608 certification required to buy or handle refrigerants — Core plus Type I/II/III, valid for life. 240 free practice questions in English and Español.
240 questions · 6 study chapters · English & Español
Related bundles
Exams people usually need together — study the set, not just one.
Every California contractor must pass the Law & Business exam plus their specific trade exam. Study both together.