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 — choose the equipment-specific certification type and an approved testing program; practice is not certification.
Free practice questionsElectrician
Open book80 questions · 4h · pass 56/80
Journeyman electrician concept practice; confirm your jurisdiction, license category and required exam reference edition.
Free practice questionsPlumber
Open book80 questions · 4h · pass 56/80
Journeyman plumber concept practice; confirm your jurisdiction, license category, code edition and local amendments.
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 electrical trade practice with separate Law & Business study; current-guide review does not certify every bank item or meet licensing requirements.
Free practice questionsCalifornia C-20
Closed book2 exams · 230 questions total
California C-20 HVAC trade practice with the current guide effective April 1, 2026; a guide review does not certify every bank item or satisfy licensing requirements.
Free practice questionsCalifornia C-36
Closed book2 exams · 230 questions total
California C-36 plumbing practice with the current guide effective March 1, 2025; guide review does not certify every item or satisfy licensing requirements.
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 residential electrical inspection practice; confirm the registered exam code year and each reference title/year. Full bank edition validation is not asserted.
Free practice questionsICC P1
Open book60 questions · 2h · pass 45/60
ICC P1 residential plumbing inspection practice; confirm the selected exam code year and reference list. Full bank edition validation is not asserted.
Free practice questionsICC M1
Open book60 questions · 2h · pass 45/60
ICC M1 residential mechanical inspection practice; confirm the selected exam code year and references. Full bank edition validation is not asserted.
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 practice only; confirm class, endorsement and current references. Full bank code-edition validation is not asserted.
Free practice questionsPractise, then review
Choose the contractor exam and practise reference selection
Separate NASCLA from state contractor licensing and select the correct reference list before practising take-offs and book navigation.
3 original scenarios · No account needed · Answers explained
NASCLA examination success is not a national licence or certification. State agencies still set additional licensing conditions. Original learning calculations do not reproduce official questions or grant permission to bring a particular book into a test.
Try original learning scenarios
Answer without an account. Explanations and topic review links are included; progress resumes in this browser tab after refresh.
After passing a NASCLA examination, a contractor wants to work in another jurisdiction. What is the correct next licensing check?
- Assume a nationwide licence was issued
- Check that jurisdiction’s acceptance and additional application conditions
- Replace the application with this sample score
Preparing answer controls…
Study sequence
- Choose jurisdiction and trade: follow the existing Florida, California or NASCLA route rather than treating all contractor samples as Florida-specific.
- Match references to the examination category, format and test date. Florida’s official list has separate lists effective January 2026 and January 2027; a future list is not automatically the current list.
- Practise a lookup by locating the subject in the authorized reference, reading table headings and units, and checking exceptions before calculating.
- Review wrong answers using the appropriate exam section; preserve a separate list of application, experience, financial and business-law requirements for the licensing agency.
Revision terms
- Trade examination
- An assessment step, not issuance of a licence.
- Take-off
- Measuring quantities from the supplied dimensions and units.
- Reference edition
- The specific authorized edition, which must match the examination rules and date.
Use your browser’s Print command to print this checklist and terms. This is an HTML revision sheet, not an official course certificate or a downloadable exam paper.
Sources and applicability
- CSLB examination study guides by classification
Reviewed 2026-10-13. Select the applicable trade classification and separate Law & Business guide for topics and study references. This directory does not certify the edition or accuracy of every independent practice explanation.
- NASCLA explains exam versus licence
Reviewed 2026-10-12. Participating-agency trade examination does not replace all state licensing requirements.
- Florida current and future reference lists
Reviewed 2026-10-12. Choose category, format and effective date; this link is not permission to use every listed book.
Contractor exam videos
Lien deadlines, OSHA and IBC numbers, the business math and the most-missed questions. Free to watch, no account needed.
Going 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.
The study companion
A clearer path to your next step.
26 guides · updated
Latest
- ContractorPass
CSLB Online Sole-Owner Application (Bulletin #26-04): Original License Only
CSLB bulletin #26-04 lets original sole-owner applicants complete and pay the license application online. A 2.3 percent payment fee applies. The form does not add a classification or replace a qualifier. EstatePass is not CSLB.
- ContractorPass
CSLB Workers' Comp Exemption: Eligibility, Forced-Coverage Classifications, and SB 291
A CSLB workers’ compensation exemption requires no employees, no RME qualifier, and none of the forced-coverage classifications. SB 291 raises enforcement. EstatePass is not an insurer.
- ContractorPass
CSLB Muralist Exemption (SB 456): When California Murals Don't Need a Contractor License
SB 456 exempts certain unique hand-painted fine-art murals when the agreement and copyright-style protection are in place. Painted wall signs are not exempt. EstatePass is not CSLB.
All guides
- How Hard Is the NASCLA Exam? Open-Book Difficulty, Pacing & What Trips CandidatesContractor exam preparation
- NASCLA vs Florida GC vs California CSLB: Which Contractor Exam Path?Contractor exam preparation
- California CSLB Closed-Book Study Strategy (Class B + Law & Business)Contractor exam preparation
- NASCLA Open-Book Mistakes: Tabbing, Pacing, and Memorize vs LookupContractor exam preparation
- Failed the Florida Business & Finance Exam? Retake Only What You FailedFlorida contractors
- NASCLA Retake Rules: 3 Attempts Within 1-Year Eligibility (Official Policy Guide)ContractorPass
- Failed the CSLB Law & Business Exam? 21-Day Wait, 18-Month Void & Recovery PlanContractorPass
- Failed Florida Contractor Trade Knowledge? Retake Only What You FailedFlorida contractors
- NASCLA Reciprocity Myths: Why Passing the Exam Is Not a Multi-State LicenseContractorPass
Show 14 more guidesShow fewer
- Failed the Arizona ROC Contractor Exam? 30 / 30 / 90-Day Retake Rules & RecoveryContractor licensing
- Can I Take the NASCLA Exam Online? No — PSI Test Centers After NED ApprovalNASCLA contractor
- Can I Take the California CSLB Exam Online? No — PSI Test Centers OnlyCalifornia contractor
- Can I Take the Florida Contractor Exam Online? No — Pearson VUE Test Centers After PTI ApprovalFlorida contractor
- Can I Take the Arizona ROC Exam Online? Yes — Trade/Solar Online or PSI Center (SRE Online-Only)Contractor exams
- How Hard Is the CSLB Exam? Law & Business + Class B Closed-Book Difficulty GuideContractor exams
- Is NASCLA Worth It? Multi-State Trade Waiver vs State-Only ExamsContractorPass
- NASCLA Electrical vs Commercial GC: Which Accredited Exam Do You Need?ContractorPass
- NASCLA Official Practice Exam vs ContractorPass: An Honest ComparisonContractorPass
- CSLB Class B vs Class C vs B-2: Which California Contractor Path?ContractorPass
- Do I Need a CSLB License? California’s $1,000 / AB 2622 ExemptionContractorPass
- CSLB Experience Requirements: Do You Have 4 Years of Journeyman-Level Work?ContractorPass
- CSLB New Laws 2026: What Bulletin #25-04 Means for Applicants and LicenseesContractorPass
- California Home Improvement Contracts: Email Address + Cancel-by-Email (AB 1327)ContractorPass