United States · Licensing exam

Contractor license exam

There’s no national contractor license. Each state board decides who needs one and what you have to pass. In most states that’s a business and law exam, plus a trade exam for the work you do. Testing companies like PSI and Pearson VUE run them, and some are open book. This guide explains the usual pattern, then gives the official facts for California, Florida and North Carolina. There’s a free practice test further down, on liens, contracts, bonds, safety and estimating math.

  • 2+Exams in most states: business and law, plus a trade exam
  • 70%Pass mark in Florida and North Carolina
  • 3½ hoursTime for each California CSLB exam
  • Open bookIn Florida and North Carolina. California is closed book

Key facts

At a glance

Who sets it
Your state’s contractor board. Rules, exams and fees differ a lot
Usual exams
Business and law, plus a trade exam for your classification
California
Law and Business plus trade, 3½ hours each, closed book, $450 application
Florida
Business and Finance: 120 questions in 6.5 hours, open book
North Carolina
Business and Law: 40 questions in 90 minutes, open book, $79 per exam

How it works

A business and law exam, plus a trade exam, booked through your state board

  1. There’s no national contractor exam. Each state board decides who needs a license and which exams you take.
  2. You apply to the board first. Once it approves you, you get a notice or eligibility letter and book the exam with its testing company.
  3. Most states use two kinds of exam: a business and law exam, and a trade exam for your type of work.
  4. Exams are multiple choice, on a computer, at a test center run by a company like PSI or Pearson VUE.
  5. California (CSLB, through PSI): a Law and Business exam and a trade exam, 3½ hours each, closed book. CSLB doesn’t publish one pass mark; it varies by exam.
  6. Florida (DBPR): the Business and Finance exam has 120 questions in 6.5 hours, and you need 70%. General, building and residential contractors also take Contract Administration and Project Management.
  7. North Carolina (NCLBGC, through PSI): the Business and Law exam has 40 questions in 90 minutes. The Building exam has 90 questions in 200 minutes. You need 70%, and both are open book.

Topics

What’s on the test

01

Licensing and business setup

Who needs a license, the license types and limits, and how a contracting business is organized.

Key points (4)
  • California: any job worth $500 or more in labor and materials needs a CSLB license.
  • North Carolina: a general contractor license is needed for projects of $40,000 or more.
  • North Carolina license limits: Limited up to $750,000 per project, Intermediate up to $1,500,000, Unlimited with no cap.
  • California qualifiers need 4 years of journey-level experience in the last 10 years.
02

Contracts and changes

What goes into a construction contract, how to change it and how payments work.

Key points (3)
  • A California home improvement down payment can’t be more than $1,000 or 10% of the price, whichever is less.
  • Put every change in a written, signed change order before the work starts.
  • Retainage is part of each progress payment held back until completion.
03

Liens and payment rights

How mechanics liens work, the notices that protect them and why deadlines matter.

Key points (4)
  • A mechanics lien is a claim against the property that was improved.
  • Florida: a Notice to Owner must be served no later than 45 days after you start furnishing.
  • Florida: a claim of lien must be recorded within 90 days of final furnishing.
  • You generally can’t lien public property; payment bonds protect subs and suppliers instead.
04

Insurance and bonds

The policies and bonds a contractor carries, and who each one protects.

Key points (4)
  • California requires a $25,000 contractor bond for an active license, and it isn’t per job.
  • A performance bond protects the owner; a payment bond protects subs and suppliers.
  • Workers’ compensation covers employee job injuries regardless of fault.
  • If a surety pays a bond claim, the contractor normally has to pay it back.
05

Workers, payroll and records

Hiring the right way, classifying workers, payroll taxes and the records you must keep.

Key points (3)
  • The IRS looks at the right to control how the work is done, not the label in a contract.
  • Employers pay 6.2% Social Security plus 1.45% Medicare, matching the employee.
  • Keep each Form I-9 for 3 years after hire or 1 year after the job ends, whichever is later.
06

Job site safety (OSHA)

The federal OSHA rules that come up most on contractor exams, and how to report serious incidents.

Key points (4)
  • Construction fall protection starts at 6 feet above a lower level.
  • Trenches 5 feet deep or more need a protective system unless they’re in stable rock.
  • Report a work-related death within 8 hours; hospitalization, amputation or eye loss within 24 hours.
  • States with their own OSHA plans, like California, can have stricter rules.
07

Business finance

Reading financial statements, managing cash and the numbers boards look at.

Key points (3)
  • Working capital = current assets minus current liabilities.
  • The current ratio is current assets divided by current liabilities.
  • Office rent and admin wages are overhead, not direct job costs.
08

Estimating and scheduling

Construction math, pricing a bid and planning the order of work.

Key points (3)
  • Divide cubic feet by 27 to get cubic yards.
  • A 25% markup on cost gives a 20% margin on price.
  • Critical path tasks have no float; a delay to one delays the finish.

Free practice test

Try 20 contractor business and law questions

These 20 questions are our own. They cover the business and law topics most state exams share: licensing, contracts, liens, insurance and bonds, workers and payroll, OSHA safety and estimating math. Where a rule belongs to one state, the question says which. Real exams are longer. North Carolina’s Business and Law exam has 40 questions and Florida’s Business and Finance exam has 120. Florida and North Carolina both pass you at 70%, so 14 right out of 20 is a pass here. After each answer you can ask the tutor to explain it another way.

Question 1 of 20

In California, when do you need a CSLB contractor license for a construction job?

Sample of the exam: same format, 20 questions.

Test day

What to bring on exam day

  • A valid, unexpired government-issued photo ID in the same name as your application
  • Your exam notice or eligibility letter, with any ID number the board gave you
  • For open book exams: your own approved references, bound, with permanent tabs only (North Carolina doesn’t allow Post-it flags)
  • A silent, non-programmable calculator only where the bulletin allows it. In California, PSI provides one and you can’t bring your own

Before you go

  1. Check your state board’s website. Who needs a license, the exams and the fees all differ by state.
  2. Gather proof of your work experience early. California wants 4 years of journey-level experience in the last 10.
  3. Download the free candidate bulletin or study guide for each exam. It lists the topics, the time and the allowed books.
  4. For an open book exam, buy the exact editions listed and tab them before test day.
  5. Practice the math: area, volume, markup and payroll taxes.
  6. Arrive at least 30 minutes early. If you’re late you can lose your seat and your fee.
CSLB: My exam application was acceptedIn every state you apply to the board first, then book with its testing company. California and North Carolina use PSI. Florida candidates register with Professional Testing, Inc. and then book with Pearson VUE.

Study options

Where to study

Start with your state board’s free candidate bulletin or study guide. It lists the topics, the time and, for open book exams, the exact books you can bring. Many states use a NASCLA business and law guide as the main reference. We’ve compared the official guides, apps and schools people use.

OptionPriceFree to useLinks
Official and free
CSLB exam study guides (California)Official · PDF, English and SpanishEach guide lists the exam sections and how much each one counts, with sample questions and the books the questions come from. The Law and Business guide shows the biggest sections are contracts (21%) and employment (20%). Spanish versions are available for many exams.
FreeA study guide for the Law and Business exam and every trade exam
CSLB Get Licensed to Build and the License Law & Reference BookOfficial · PDF and webGet Licensed to Build walks through experience, the application, the exams and what happens after you pass. CSLB also gives free online access to the California Contractors License Law & Reference Book, the main source for the Law and Business exam. Printed copies are sold by LexisNexis.
Free to read onlineThe full licensing guide, and free online access to the law book
PSI candidate bulletin for North Carolina general contractorsOfficial · PDFThis is the document to study from if you’re testing in North Carolina. It shows that the Business and Law exam has 40 questions in 90 minutes, lists exactly which references you may bring, and explains the tab rules. It also has an order form for the books.
FreeEvery NC exam’s question count, time, topics and allowed books
NCLBGC Laws and Regulations bookOfficial · PDFLicensing questions make up more than half of the NC Business and Law exam (21 of 40), and this is where the answers live. It covers license limits, fees and the board’s rules.
FreeThe full 2026 North Carolina general contractor statutes and rules
Florida DBPR candidate information bookletsOfficial · PDFFlorida’s booklets list each construction exam and the books allowed in the room. Florida is open book, so the reference list is your shopping list. The DBPR site sometimes blocks automated visitors; open it in a normal browser.
FreeExam lengths, the 70% pass mark and the reference lists
Apps and websites
NASCLA Contractor’s Guide to Business, Law and Project ManagementBook · state editionsThis is the business and law reference many state exams are built on. NASCLA sells 18 state editions, including Florida and North Carolina. North Carolina’s exam uses the NC General Contractors edition, and CSLB lists the 14th edition as a study resource. Buy the exact edition your bulletin names.
Paid; price depends on the editionNothing free; the store lists the editions
Contractors License Exam Prep (Contractors Intelligence School)App · iPhoneA California school’s app, with practice exams, video and audio lessons and help with the application. It’s for enrolled students, so it won’t work on its own. 4.8 stars from 786 ratings on the App Store, the most of any contractor exam app we found.
Free download; 30-day courses $149.99 eachThe app is free, but you need a student account
General Contractor Exam 2026App · iPhonePractice tests for California’s B (General Building) and Law and Business exams. The listing shows several overlapping subscription prices, so check what you’re buying. 4.5 stars from 15 ratings on the App Store.
Free download; subscriptions from $12.99 a weekFree to download; the full question bank needs a subscription

Prices and ratings checked October 2026.

FAQ

Common questions

How do I get a contractor license?

You apply to your state’s contractor board, not a federal agency. Most boards want proof of experience, then a business and law exam and a trade exam, and then a bond and insurance before they issue the license. In California, for example, you need 4 years of journey-level experience in the last 10 years. In North Carolina, you need a general contractor license for projects of $40,000 or more. Check your own board for its rules.

What’s on the California contractor license exam?

Most applicants take two CSLB exams: Law and Business, and a trade exam for their classification, like B (General Building). Each one is multiple choice on a computer at a PSI center, and you get 3½ hours. The Law and Business exam is closed book. Its biggest sections are contracts (21%) and employment (20%). CSLB doesn’t publish one pass mark, because it varies by exam. As of October 2026, the application fee is $450.

What’s on the Florida contractor license exam?

Every Florida contractor takes the Business and Finance exam, which has 120 questions in 6.5 hours and is open book. General, building and residential contractors also take Contract Administration and Project Management. Other trades take a trade knowledge exam instead. You need 70% on each, and you only retake the parts you failed. You register through Professional Testing, Inc. and book with Pearson VUE.

Is the contractor license exam open book?

It depends on the state. Florida and North Carolina exams are open book. You bring your own approved references, and North Carolina only allows permanent tabs, not sticky flags. California’s CSLB exams are closed book: no reference materials, and PSI gives you a calculator.

How do I check a contractor license?

Use your state board’s free online search. In California, it’s CSLB’s Check a License page, where you can search by license number, business name or a person’s name. In North Carolina, use the NCLBGC license search. In Florida, use the DBPR license search at myfloridalicense.com. Check that the license is active and covers the type of work you need.

What is a contractor license bond, and how much is it?

It’s a bond some states require before you can hold an active license. It isn’t insurance for you. It pays people harmed when a contractor breaks license law, and you have to pay the surety back. In California it’s $25,000, and it’s one total for all your jobs, not per job. LLCs need an extra $100,000 bond. Other states set their own amounts, and some don’t require one.

All 20 practice questions with answersA printable list of the practice test above
  1. In California, when do you need a CSLB contractor license for a construction job?

    When the job is worth $500 or more in labor and materials combined CSLB says any construction job worth $500 or more, counting labor and materials together, needs a license. Permits and employees don’t change that. You also can’t split a job into smaller parts to stay under $500.

  2. In North Carolina, at what total project cost does a general contractor need a license from the NCLBGC?

    $40,000 or more North Carolina requires a general contractor license when the total cost of the project is $40,000 or more. Below that, the state general contractor license isn’t required, though other licenses (like electrical or plumbing) may be.

  3. In California, a homeowner signs a $25,000 home improvement contract. What is the largest down payment the contractor can ask for?

    $1,000 California limits a home improvement down payment to $1,000 or 10% of the contract price, whichever is less. 10% of $25,000 is $2,500, and $1,000 is less, so $1,000 is the most. Breaking this rule is a misdemeanor.

  4. Halfway through a job, the owner asks for bigger windows. What’s the best way to handle the extra cost and time?

    Get a written change order signed before doing the work A change order is a written agreement that changes the scope, price or schedule after the contract is signed. Getting it signed before the work starts protects both sides. Many states, including California for home improvement work, require changes to be in writing.

  5. What is retainage on a construction contract?

    Part of each progress payment held back until the work is complete Retainage (or retention) is a percentage held back from each progress payment, often 5% to 10%. The owner releases it once the job is finished and accepted. It gives the contractor a reason to finish the punch list.

  6. What does a mechanics lien do?

    It lets an unpaid contractor or supplier make a claim against the property itself A mechanics lien is a claim against the real property that was improved. It makes the unpaid amount a cloud on the title, and it can lead to a court-ordered sale. Strict notice and deadline rules apply, and they differ by state.

  7. In Florida, a supplier selling to a subcontractor wants to keep its lien rights. By when must it serve a Notice to Owner?

    Before starting, or no later than 45 days after first furnishing materials Florida law says the Notice to Owner must be served before starting, or no later than 45 days after starting, to furnish labor, services or materials. It also has to go out before the owner makes final payment. Suppliers to a subcontractor must send a copy to the contractor too.

  8. On a bonded project, who is the payment bond mainly there to protect?

    Subcontractors and suppliers who might not get paid A payment bond guarantees that subcontractors, laborers and suppliers get paid. A performance bond is the one that protects the owner if the contractor doesn’t finish. On public jobs, a payment bond often takes the place of lien rights, because you can’t lien public property.

  9. Which is true about the $25,000 California contractor license bond?

    It’s a total amount available for claims across all of the contractor’s jobs CSLB says the bond amount isn’t per job. It’s the total available for all the jobs during the life of the bond. It protects people harmed when a contractor breaks license law, not the contractor. You need it for an active license, not an inactive one.

  10. An employee is hurt on the job through their own mistake. Which coverage pays for medical care and lost wages?

    Workers’ compensation insurance Workers’ compensation pays for job injuries to employees no matter who was at fault. In return, the employee generally can’t sue the employer for the injury. General liability is for injury or damage to other people and their property.

  11. Under the IRS rules, what matters most in deciding whether a worker is an employee or an independent contractor?

    Whether the business has the right to control how the work is done The IRS looks at the whole relationship and the right to direct and control the worker. It groups the evidence into behavioral control, financial control and the type of relationship. A label in a contract doesn’t decide it. Some states, like California, use a stricter test.

  12. A worker you hired leaves after 6 months. How long must you keep their Form I-9?

    3 years after the date of hire You keep a Form I-9 for 3 years after the date of hire, or 1 year after employment ends, whichever is later. For someone who worked 6 months, 3 years from hire comes later. So that’s the date to use.

  13. For an employee earning under the Social Security wage limit, what share of their wages does the employer pay in Social Security and Medicare tax?

    7.65% The employer pays 6.2% for Social Security and 1.45% for Medicare, which is 7.65%. The employee pays the same 7.65% through withholding. Together that’s 15.3%.

  14. Under federal OSHA construction rules, at what height do workers near an unprotected edge need fall protection?

    6 feet OSHA’s construction standard requires fall protection when a worker is on a surface with an unprotected side or edge 6 feet or more above a lower level. Guardrails, safety nets or a personal fall arrest system are the usual options. States with their own OSHA plans can be stricter.

  15. Under federal OSHA rules, when does a trench need a protective system such as sloping, shoring or a trench box?

    At 5 feet deep or more, unless it’s all in stable rock OSHA requires cave-in protection in excavations 5 feet deep or more, unless they’re made entirely in stable rock. Shallower trenches can also need protection if a competent person sees signs of a possible cave-in. Trenches deeper than 20 feet need a system designed by a registered professional engineer.

  16. An employee dies from a work-related incident. How soon must the employer report it to federal OSHA?

    Within 8 hours Federal OSHA rules say a work-related death must be reported within 8 hours. An in-patient hospitalization, an amputation or the loss of an eye must be reported within 24 hours.

  17. Your balance sheet shows $250,000 in current assets and $180,000 in current liabilities. What is your working capital?

    $70,000 Working capital is current assets minus current liabilities: $250,000 minus $180,000 is $70,000. Boards like North Carolina’s look at working capital when deciding which license level you can hold.

  18. Your total cost for a job is $80,000. You add a 25% markup. What is your bid price?

    $100,000 Markup is added on top of cost. 25% of $80,000 is $20,000, so the price is $100,000. That $20,000 is 20% of the selling price, which is why a 25% markup gives a 20% margin.

  19. A concrete slab is 30 feet long, 20 feet wide and 4 inches thick. About how much concrete do you need, before waste?

    7.4 cubic yards Change inches to feet first: 4 inches is 0.333 feet. 30 × 20 × 0.333 is 200 cubic feet. There are 27 cubic feet in a cubic yard, so 200 ÷ 27 is about 7.4 cubic yards. You’d then add a little for waste.

  20. On a project schedule, what is the critical path?

    The longest chain of linked tasks, where any delay delays the whole job The critical path is the longest sequence of dependent tasks from start to finish. Those tasks have no float, so a delay to any of them pushes back the finish date. Tasks off the critical path have some slack.