Start here
Trade exam prep package
From
$199
Starting trade package
Start with the prep package for the classification you are testing for.
Question bank
Timed practice
Mock exams
Weak-area tracking
California CSLB · Contractor License Exam Prep
California contractor license exam prep, online and self-paced.
Practice California-specific questions for your contractor trade exam and Law & Business on any device, with instant rationales and readiness tracking. No classroom required.
Independent exam prep for California CSLB candidates. Not a school and not the CSLB.
Test2Pro is an independent exam preparation product. It is not an official testing service, licensing board, or government agency, and it does not guarantee any exam result or credential.
Pick your California exam prep bundle
Start with your California classification: B General Building, C-10 Electrical, or Law & Business. Most applicants bundle Law & Business with their trade exam.
Live sample
Answer one before you sign up
Pick a subject and answer a sample the way you will practice: choose, translate if needed, and ask AI before you commit.
00:00
What do as-built plans show after construction?
CONTENT MAPPED TO CURRENT CODE REFERENCES · UPDATED QUARTERLY
NEC 2023 Aligned
IAPMO UPC 2024
AWS D1.1
EPA 608
NABCEP PV
CSLB Topics
NFPA 70E
Mechanical Code
4k+
practice questions
All written & reviewed by credentialed tradespeople
92%
users feel more prepared
Self-reported after full prep plan
18min
average daily session
Short, consistent reps beat cramming
8+
languages in AI tutor
EN · ES · ZH · TL · VI · KO · HY · RU
01 · ExamsPick your trade.
Pick your trade.
We've already mapped the blueprint.
Every exam prep package is built from the official content outline — so your practice covers every domain the real test can touch, weighted the way the test weights it.
ELE
Electrical
Journeyman · Master · C-10
2,400+
HVC
HVAC / Refrigeration
EPA 608 · C-20 · NATE
1,850+
PLB
Plumbing
Journeyman · C-36 · Medical gas
1,620+
GBC
General Building
B · Law & Business
2,100+
WLD
Welding
AWS · Structural · Pipe
960+
SOL
Solar & PV
NABCEP · C-46
780+
LOW
Low Voltage
C-7 · Fire/Life Safety
640+
L&B
Law & Business
Contractor exams
1,210+
02 · How it works
Four steps from "where do I start" to test-day confident.
01Pick your examChoose from 20+ trade & contractor certifications. We pull the current content outline and build your plan against it.
02Take the diagnosticA 20-minute adaptive quiz finds your weak domains. No guessing what to study — your plan is built around what you actually need.
03Drill with AI ProEvery miss gets a plain-English breakdown. Ask follow-ups. Switch languages. Save the ones you still don't get.
04Full mock examSame length, same timing, same question style as the real one. When your mock score hits target, you're ready.
Exam catalog · preview
ELE
Electrical
2,400+ questions
HVC
HVAC / Refrigeration
1,850+ questions
PLB
Plumbing
1,620+ questions
GBC
General Building
2,100+ questions
WLD
Welding
960+ questions
SOL
Solar & PV
780+ questions
03 · What's inside
Built for how trade candidates actually study.
Short reps, honest feedback, and a tutor that speaks your language. No gimmicks — just the prep you wish you'd had the first time.
Adaptive drills
Every wrong answer reweights your plan. You spend more reps on what's still shaky, not what you already know.
AI Pro tutor
On every question: plain-English explanations, deeper hints, and follow-up questions. Ask in your language.
Real-exam mocks
Same format, same length, same clock as the exam you're sitting. The only surprise on test day is the room.
Code-referenced
Every question cites the NEC / UPC / IMC / applicable-code section so you learn to look things up the way the exam expects.
Bilingual support
Translate any question or explanation into 8+ languages without leaving the drill. Great for ESL candidates.
Independent prep
Not affiliated with any licensing board. Just focused, honest practice built by credentialed tradespeople.
04 · Reviews
Tradespeople who stopped guessing.
"Diagnostic nailed exactly where I was weak. Three weeks later I walked in calm. Passed Journeyman on the first try."
MR
Marcus R.
Journeyman Electrician · TX
"The bilingual mode was the difference. My first language is Spanish and I could actually understand the NEC reasoning."
LH
Luis H.
C-10 Candidate · CA
"I failed the B exam twice on other prep. Switched here for 6 weeks, focused on Law & Business gaps, passed with 78."
KD
Kendra D.
General Building · FL
"The mock exams feel identical to the real test. No surprises on test day — which is exactly what you want."
AN
Alex N.
HVAC · Journeyman · IL
05 · PricingStart with your trade exam.
Start with your trade exam.
Bundle what most applicants actually need.
Pick the exam prep package for your classification, add Law & Business when your license path requires it, and choose AI Pro only if you want deeper study help.
Common package
Law & Business bundle
Add to package
+$100
Business-law prep, bundled
Covers the business-law side most California contractor applicants pair with their trade exam.
One checkout path
Trade exam + business-law prep
Access length selected at checkout
Optional
AI Pro add-on
Add
$20/mo
Optional monthly add-on
Add multilingual explanations, deeper hints, and follow-up study support when you need it.
8+ languages
Expanded hints
Follow-up questions
Final price depends on selected exam, access length, package choice, and AI Pro. Test2Pro is independent and does not include official exam registration, licensing, or a pass guarantee.
06 · FAQ
Answers to the real questions.
Is Test2Pro affiliated with my state's licensing board?
No. Test2Pro is an independent exam preparation product. We map our question banks to the official content outlines published by licensing bodies, but we are not a testing service, licensing board, or government agency.
Do you guarantee I'll pass?
No one can honestly guarantee an exam result. What we can say is that our prep plan is built from the published content outlines, and candidates who complete their full plan report meaningfully higher confidence and first-try pass rates.
How often do you update content for new codes?
Question banks are reviewed quarterly and re-anchored whenever a relevant code cycle changes. Every question cites the specific code section it's drawn from.
Can I use Test2Pro in Spanish (or another language)?
Yes. Any question and any AI Pro explanation can be translated into 8+ languages on demand: EN, ES, ZH, TL, VI, KO, HY, RU. The original English is always one tap away.
What if I just want a free taste?
Start with the Starter experience: sample questions, basic explanations, and no card required. If it clicks, paid prep unlocks the full bank and the AI tutor.
TEST-DAY READY
Walk into the exam room
like you've been there before.
Start with a free diagnostic. See your weak areas in 20 minutes and build a focused study plan.
Get your weak-area mapin 20 minutes
Focused study plantailored to your exam
AI tutor in your language8+ supported
Full-length mock when readysame feel as test day