The seven content areas tested
The CSLB Law and Business exam blueprint divides content into seven major areas. Here they are, with the rough percentage of questions you can expect:
- Business organization & licensing — ~14%
- Contracts and lien laws — ~22%
- Employment requirements — ~14%
- Public works — ~6%
- Safety — ~13%
- Insurance and bonds — ~12%
- Financial management — ~19%
Mechanic's liens — the most-tested topic
A mechanic's lien is a contractor's most powerful collection tool. If a customer doesn't pay, a properly recorded mechanic's lien attaches to the property and can ultimately force a sale to satisfy the debt. But the rules are strict, and a single missed deadline kills the lien.
Memorize this timeline:
- 20 days from first furnishing labor/materials — serve a Preliminary Notice (subs and suppliers only)
- 90 days from completion or last work — record the lien (60 days if Notice of Completion was recorded)
- 90 days from recording the lien — file a foreclosure lawsuit, or the lien expires
Home Improvement Contracts — the disclosure rules
Any residential remodel, repair, or alteration over $500 is a "Home Improvement Contract" under California law. The contract must be in writing and must include specific mandatory disclosures, or it's unenforceable and you can be disciplined.
The down payment is capped at $1,000 or 10% of the contract price, whichever is less. Progress payments must be tied to substantially completed work — no front-loading. Every Home Improvement Contract gives the homeowner a 3-day right to cancel (5 days for buyers aged 65+).
Workers' compensation — the rules that catch people
Every California employer must carry workers' compensation insurance for employees. Three high-yield rules to memorize:
- Sole proprietors with no employees can sign an exemption certificate — but the moment they hire anyone, even a part-timer, they must obtain coverage.
- C-39 (roofing) contractors must always carry workers' comp, even with no employees.
- Failing to maintain workers' comp when required results in automatic license suspension.
Bonds and insurance
Every CSLB-licensed contractor must post a $25,000 contractor bond. If a contractor is licensed via a Responsible Managing Employee (RME) rather than a Responsible Managing Officer (RMO) or qualifier, an additional $25,000 qualifying-individual bond is required. Bonds protect consumers and unpaid subcontractors, not the licensee.
Practice these laws until they're automatic
Business law is recall-heavy. The best way to retain it is spaced-repetition practice — see specific scenarios, recall the rule, and reinforce. Our Premium course includes 300+ Law & Business practice questions with detailed code-cited explanations, plus an AI tutor you can ask "explain mechanic's liens like I'm 10" at midnight before your exam.
Start with a free readiness test to see how much of this you already know.