A study plan for the Law and Business exam, in two weeks or four
CSLB tells you what the exam weighs. Most people ignore it and study in page order. Here is a plan that follows the weights instead.
There is no official study schedule. What CSLB does publish is more useful: the seven sections of the exam and roughly what share of it each one carries. Those percentages are a budget. Spend your hours the way the exam spends its questions and you stop losing points in the places that matter most.
The hours below are our suggestion, not a CSLB rule. They assume you work during the day and study an hour or so on weeknights and a longer block on the weekend: about 24 hours over two weeks or 40 hours over four. If you have more time, scale everything up; the proportions are the point.
Step 1: turn the weights into hours
| Section (weight) | 2 weeks | 4 weeks |
|---|---|---|
| Contract Requirements and Execution · 21% | 3½ h | 6 h |
| Employment Requirements · 20% | 3½ h | 5½ h |
| Business Finances · 15% | 2½ h | 4 h |
| Safety · 14% | 2½ h | 4 h |
| Business Organization and Licensing · 13% | 2½ h | 3½ h |
| Insurance and Liens · 12% | 2 h | 3½ h |
| Public Works · 5% | 1 h | 1½ h |
| Full timed mock exams (3½ h each) | 1 · 3½ h | 2 · 7 h |
| Reviewing mistakes and numbers | 3 h | 5 h |
| Total | 24 h | 40 h |
Weights from the CSLB Law and Business Examination Study Guide (for exams scheduled on or after 1 December 2021). CSLB notes the percentages are approximate. Hours are ours.
Contracts and Employment together are 41% of the exam. Public Works is 5%. An hour on Contracts is worth about four hours on Public Works in exam points, so the table is lopsided on purpose.
Step 2: find out where you actually stand
Before you open a book, take a scored test that breaks your result down by section. Our free 25-question test takes about 15 minutes and does exactly that. Then adjust the table: take an hour from any section you are already strong in and give it to your weakest heavy section. Being weak in Public Works is cheap. Being weak in Contracts or Employment is how people fail.
Do not skip a section entirely because you scored well on a handful of questions. Four or five questions is a hint, not a verdict.
Step 3: know where each section's answers live
CSLB's study guide lists the reference material the exam is built from. The one to start with is the California Contractors License Law & Reference Book, which CSLB makes free on its website. Here is roughly which source covers which section — our reading of the list, not CSLB's:
| Section | Where the rules come from |
|---|---|
| Business Organization and Licensing | The Law Book (Contractors State License Law), Get Licensed to Build, CSLB's Maintain and Change Your License |
| Business Finances | The NASCLA Contractors Guide to Business, Law and Project Management |
| Employment Requirements | EDD California Employer's Guide (DE 44), IRS Publication 15, the California Labor Code |
| Insurance and Liens | The Law Book (workers' compensation and mechanics lien sections) |
| Contract Requirements and Execution | The Law Book (home improvement contract rules), the NASCLA guide for bidding and cost control |
| Public Works | DIR Public Works Manual |
| Safety | Cal/OSHA Construction Safety Orders (California Code of Regulations, Title 8) |
You do not need to read all of that cover to cover — the Law Book alone is over 600 pages, and the exam is closed book. Use the sources to check answers you got wrong, not as a novel.
The four-week plan
- Week 1 — the heavy half. Day 1: the baseline test. Then Contracts, all of it, and start Employment. Questions first, explanations second, reading only for what you missed.
- Week 2 — money. Finish Employment (payroll brings its share of calculation questions), then Business Finances. Start a handwritten numbers sheet: every deadline, dollar limit and percentage you meet.
- Week 3 — the rest. Safety, Licensing, Insurance and Liens, Public Works, in that order. End the week with your first full timed mock: 3½ hours, phone in another room, no notes, one sitting.
- Week 4 — fix, don't add. Sort the mock mistakes by section and work the two weakest. Drill the numbers sheet. Sit the second full mock at least three days before the exam, so you have time to fix what it shows. The last two days: light review only, and read what happens on exam day.
The two-week plan
- Day 1. Baseline test. Adjust the hours table.
- Days 2–4. Contracts and Employment. This is 41% of the exam in three days, so keep it to questions and explanations.
- Days 5–7. Business Finances and Safety, plus the calculation drills below.
- Days 8–9. Licensing, Insurance and Liens, Public Works.
- Day 10 or 11. One full timed mock, 3½ hours, in one sitting.
- Days 11–13. Only what the mock got wrong, plus the numbers sheet.
- Day 14. Nothing heavy. Check your ID. Sleep.
Two weeks is tight but workable if you already run a business and know the paperwork side. If you have never done payroll or bid a job, take four.
Learn the numbers as numbers
A large part of this exam is recall: a deadline, a cap, a threshold. Re-reading does not stick; writing them down and testing yourself does. A few examples of the kind of number that gets asked, all from CSLB material:
- A home improvement down payment may not exceed $1,000 or 10% of the contract price, whichever is less (Law Book, home improvement contract requirements).
- A subcontractor or supplier has 20 days after starting work or delivering materials to serve a preliminary notice; serve it late and lien rights are lost for anything supplied more than 20 days before the notice (CSLB mechanics lien guidance).
- Work under $1,000 in total, labor and materials, is exempt from the license requirement only if it is casual or minor and needs no building permit. The exemption is lost if you advertise as a contractor or have anyone working for you on it, and splitting a job into smaller contracts to get under the limit does not count (Business and Professions Code §7048).
- In CSLB arbitration, the agreement to arbitrate must be returned within 30 calendar days after the Registrar mails it (a sample question in CSLB's own study guide).
Drill the math until it is boring
Some questions need calculation, and a calculator is provided. People rarely lose these points for not knowing the formula; they lose them by mixing two formulas up under time pressure. The classic is markup versus margin:
Job cost $10,000, marked up 25%. Price = $10,000 × 1.25 = $12,500. Gross profit = $2,500. Margin = $2,500 ÷ $12,500 = 20%, not 25%. Markup is measured on cost; margin is measured on price. The wrong answer will always be on the list.
The same goes for the down payment cap: on a $25,000 home improvement job, 10% is $2,500, so the cap is $1,000; on an $8,000 job, 10% is $800, so the cap is $800. Do ten of each until you stop hesitating.
What one study session looks like
- Twenty or thirty questions from one section, no looking things up.
- Read the explanation for every one you missed and every one you guessed. A lucky guess is a wrong answer you have not found yet.
- Add any new number to your sheet.
- Stop while you can still concentrate. Five focused hours beat ten tired ones.
If you use our full course, the 180-day pass builds this kind of plan from your exam date and checks it against what you have actually done. The free guide and the free test work fine without it.
Common questions
Is two weeks really enough?
For someone who already handles contracts, payroll and insurance in their own business, often yes. For someone coming straight from the trade side, four weeks is more realistic. The failing report, if it comes to that, will tell you exactly which sections to fix.
Should I read the whole Law Book?
No. Use it to look up the rules behind the questions you miss. Reading 600-plus pages front to back is slow, and you cannot bring it into the exam.
How many questions are on the exam?
CSLB publishes the section weights and the 3½-hour limit, not a fixed question count. Plan around the weights.
When should I book the exam?
Book it before you start the plan. A fixed date keeps the plan honest. You can move it without losing the fee if PSI gets your notice at least two days ahead.
Last reviewed 28 September 2026 against the CSLB Law and Business Examination Study Guide, the Contractors License Law & Reference Book (2026), CSLB's mechanics lien guidance and Get Licensed to Build. The study hours are our recommendation. Rules change; confirm at cslb.ca.gov. Not legal advice, and we are not affiliated with CSLB or PSI.