Contractor License Exam Prep · 2026
One prep. Twenty exams. Six trades.
General contractor (NASCLA, Florida, California CSLB), HVAC (EPA 608), electrical and plumbing journeyman, and ICC B1 building inspector. Real exam-style questions, AI explanations, and full mock exams for all twenty, under one subscription.
Free to start · no credit card required
Pick your exam system
Every covered state routes to one of three general-contractor exam systems. All twenty exam lines are included in one subscription — switch lines anytime.
Exam system 01
NASCLA Accredited Exam
Open bookOne subscription, valid across 16+ NASCLA states — study once.
1,300+ practice questions included
Administered by PSI · Master all 12 areas
Practice NASCLA questions freeExam system 02
Florida General Contractor
Open bookFlorida's own three-part GC exam (all three parts to get licensed).
3,300+ practice questions included
Administered by Pearson VUE · Three exams, all open book
Practice Florida questions freeExam system 03
California CSLB Class B
Closed bookCalifornia CSLB Class B — closed book, two exams.
3,000+ practice questions included
Administered by PSI (CSLB) · Two exams · closed book
Practice California questions freeBeyond general contracting
Four more exams for the trades — same question engine, same subscription.
EPA 608
Closed book4 exams · 100 questions total
EPA Section 608 — one national certification, no state variations.
Free practice questionsElectrician
Open book80 questions · 4h · pass 56/80
Journeyman Electrician — NEC-based, accepted in most states.
Free practice questionsPlumber
Open book80 questions · 4h · pass 56/80
Journeyman Plumber — IPC-based, accepted in most states.
Free practice questionsICC B1
Open book60 questions · 2h · pass 45/60
ICC B1 — national certification for residential building inspectors.
Free practice questionsCalifornia C-10
Closed book2 exams · 230 questions total
California C-10 trade preparation aligned to the current CSLB study guide.
Free practice questionsCalifornia C-20
Closed book2 exams · 230 questions total
California C-20 HVAC preparation aligned to the CSLB study guide effective April 1, 2026.
Free practice questionsCalifornia C-36
Closed book2 exams · 230 questions total
California C-36 Plumbing preparation aligned to the CSLB study guide effective March 1, 2025.
Free practice questionsTexas Journeyman
Open book2 exams · 80 questions total
Texas TDLR Journeyman preparation for the separate NEC Knowledge and Calculations portions.
Free practice questionsNASCLA Electrical
Open book100 questions · 4.5h · pass 75/100
NASCLA Electrical Contractor trade-exam preparation for participating jurisdictions.
Free practice questionsICC B2
Open book80 questions · 3.5h · pass 60/80
ICC B2 commercial inspector preparation aligned to the 2021 IBC code-cycle exam.
Free practice questionsICC E1
Open book60 questions · 2h · pass 45/60
ICC E1 preparation aligned to the 2024 IRC and 2023 NEC code-cycle exam.
Free practice questionsICC P1
Open book60 questions · 2h · pass 45/60
ICC P1 preparation aligned to the 2024 IRC code-cycle exam.
Free practice questionsICC M1
Open book60 questions · 2h · pass 45/60
ICC M1 preparation aligned to the 2024 IRC code-cycle exam.
Free practice questionsTexas Master
Open book2 exams · 100 questions total
Texas TDLR Master Electrician two-portion preparation.
Free practice questionsTexas ACR A
Open book120 questions · 3.8h · pass 84/120
Texas Environmental Air Class A preparation aligned to the current TDLR/PSI outline.
Free practice questionsGoing for NASCLA? Practice the lookup, not just the answer.
16+ states accept NASCLA. Open-book candidates fail on pacing, not knowledge — the trainer drills which book to reach for, fast.
Find Your State
Tap your state to see which exam system it uses, the official exam facts, and where to start practicing.
FLFlorida
Own exam · Pearson VUE
Florida
Own exam · Pearson VUE
Florida runs its own exam
Florida's own three-part GC exam (all three parts to get licensed).
CACalifornia
Own exam · CSLB
California
Own exam · CSLB
California runs its own exam
California CSLB Class B — closed book, two exams.
ALAlabama
NASCLA state
Alabama
NASCLA state
Alabama accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Alabama Supplemental (40 Q).
AZArizona
NASCLA state
Arizona
NASCLA state
Arizona accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Arizona Business Management & Law (80 Q).
ARArkansas
NASCLA state
Arkansas
NASCLA state
Arkansas accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
GAGeorgia
NASCLA state
Georgia
NASCLA state
Georgia accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Georgia Supplemental (45 Q).
LALouisiana
NASCLA state
Louisiana
NASCLA state
Louisiana accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Louisiana Supplemental (50 Q).
MSMississippi
NASCLA state
Mississippi
NASCLA state
Mississippi accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
NVNevada
NASCLA state
Nevada
NASCLA state
Nevada accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Nevada Business & Law (50 Q).
NMNew Mexico
NASCLA state
New Mexico
NASCLA state
New Mexico accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
NCNorth Carolina
NASCLA state
North Carolina
NASCLA state
North Carolina accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: North Carolina Supplemental (40 Q).
OROregon
NASCLA state
Oregon
NASCLA state
Oregon accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Oregon Business & Law (60 Q).
SCSouth Carolina
NASCLA state
South Carolina
NASCLA state
South Carolina accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: South Carolina Supplemental (35 Q).
TNTennessee
NASCLA state
Tennessee
NASCLA state
Tennessee accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Tennessee Supplemental (40 Q).
UTUtah
NASCLA state
Utah
NASCLA state
Utah accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
VAVirginia
NASCLA state
Virginia
NASCLA state
Virginia accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Plus a state supplement: Virginia Tradesman / Supplemental (50 Q).
WVWest Virginia
NASCLA state
West Virginia
NASCLA state
West Virginia accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
VIU.S. Virgin Islands
NASCLA state
U.S. Virgin Islands
NASCLA state
U.S. Virgin Islands accepts the NASCLA Accredited Exam
One subscription, valid across 16+ NASCLA states — study once.
Coming soon
All exam requirements verified against official state licensing board sources. Last updated July 2026.
Free Construction Calculators & Tools
Free tools for exam prep, licensing and job-site estimation
Material Calculators
Concrete Calculator
Cubic yards, bags & cost
Roofing Calculator
Shingles, squares & materials
Paint Calculator
Gallons by room dimensions
Square Footage
Area for any shape
Drywall Calculator
Sheets, mud & tape
Lumber Calculator
Board feet & wall studs
Brick & Block
CMU & mortar estimator
Tile Calculator
Tiles, grout & thinset
Flooring Calculator
All flooring types
Rebar Calculator
Spacing, qty & weight
Gravel & Fill
Tons & cubic yards
Slope & Grade
Rise over run & pitch
Business & Licensing Tools
License Requirements by State
Bond, insurance, CE — with sources
Florida Score Calculator
Florida GC practice targets
Markup vs Margin
Pricing tool for contractors
Bid Calculator
Build professional bids
Hourly Rate
What to charge per hour
Stair Calculator
IRC code-compliant stairs
Unit Converter
Construction unit conversions
Exam Math
6 exam-style calculators
License Checklist
License application steps
Insurance Estimator
GL, WC & bond costs
Bond Calculator
Surety bond premium cost
CE Hours Tracker
License renewal tracking
Frequently Asked Questions
Which states accept the NASCLA exam?
What is the NASCLA exam?
Does one subscription cover all the exam systems?
How many questions are on the contractor exam?
Is the contractor exam open-book?
What does California's closed-book exam mean?
How much does the contractor exam cost?
Which states require a contractor license?
Ready to Pass Your Contractor Exam?
General contractor, HVAC, electrical, plumbing, or building inspection — one subscription covers all twenty exam lines. Start free with practice questions, mock exams, and AI explanations.