The B (General Building) classification is California's broadest contractor license — the one that lets you contract for a whole structure instead of a single trade. Getting it means four years of journey-level experience, a $450 application, two CSLB exams and a $25,000 bond. Here is the whole path, using only the figures CSLB actually publishes.
California's Business and Professions Code § 7057(a) defines a general building contractor as one whose principal contracting business is in connection with any structure built, being built, or to be built for the support, shelter, and enclosure of persons, animals, chattels, or movable property — and whose construction requires the use of at least two unrelated building trades or crafts. That last clause is the whole classification in one line: B is about structures, not single trades.
Section 7057(b) is where most of the confusion starts. A B contractor may take a prime contract or a subcontract for a framing or carpentry project on its own. For anything else, the contract has to require at least two unrelated trades other than framing or carpentry — framing and carpentry cannot be counted toward the two. Otherwise the B contractor must hold the appropriate specialty classification or subcontract that work to someone who does. A licensed B can build a house; a licensed B cannot take a standalone contract to re-roof one unless it also holds C-39 or subs the roofing out. Section 7057(c) adds two carve-outs: no contracting for a project that includes a fire protection system (§ 7026.12 or § 7026.13) or C-57 well drilling work without that classification or an appropriately licensed subcontractor.
B-2 Residential Remodeling is a newer, narrower classification, created by SB 1189 and effective January 1, 2021 (B&P § 7057.5). It covers improvements to an existing residential wood-frame structure, and it requires at least three unrelated trades in a single contract rather than two. In exchange for a broad trade list — drywall, finish carpentry, flooring, insulation, painting, plastering, roof repair, siding, tiling, plus installing, repairing or replacing electrical, plumbing and mechanical fixtures — B-2 gives up the heavy work. It cannot contract to make structural changes to load-bearing portions of a structure, including footings, foundations, load-bearing walls and roof structures, and it cannot install, replace, substantially alter or extend electrical, mechanical or plumbing systems without the matching classification or a licensed subcontractor. If you build new, or touch structure, the classification you want is B.
Every California license has a qualifier — the person who directly supervises and controls the construction operations performed under it. CSLB's booklet Get Licensed to Build states the bar plainly: the qualifier must be at least 18 and have four years of at least journey-level work experience in the last 10 years in the classification being applied for. Credit counts only for time as a journeyperson, foreperson, supervising employee, or contractor — a journeyperson being an experienced worker, not a trainee, who can perform the trade without supervision.
You do not certify your own experience. Someone who observed the work — an employer, a fellow journeyperson, a union representative, a building inspector, or a client if you were self-employed — signs the Certification of Work Experience form included with the application, and CSLB can request documentation of anything listed on it. Qualifiers may also be selected at random to produce it.
Who may serve as qualifier depends on how the business is organized. A sole ownership license is qualified by the owner or by a responsible managing employee (RME); a partnership by a qualifying partner or an RME; a corporation by a responsible managing officer (RMO) or an RME; an LLC by a responsible managing member, responsible managing manager, RMO or RME. An RME must be a bona fide employee of the firm, may not be the qualifier on any other active CSLB license, and must be actively engaged in the business at least 32 hours per week or 80 percent of the firm's total operating hours, whichever is less.
There is no education requirement for a California contractor license — CSLB says so outright, and adds that it is not affiliated with any license preparation school. Education can still shorten the experience side: CSLB may grant credit toward the four years for a completed apprenticeship program, or for technical training or completed education at an accredited school, reviewed case by case with completion certificates and official transcripts attached to the application. High school coursework earns no credit, and every qualifier must still demonstrate at least one year of practical journey-level work experience.
1. Application and the $450 fee. File the Application for Original Contractor License with the $450 processing fee. It is nonrefundable whether or not the application is accepted, because CSLB files each one for processing the moment it arrives. Every application needs a Social Security number or an Individual Taxpayer Identification Number (ITIN). Do not send the bond or the initial license fee yet — those are billed later.
2. Fingerprints and the asbestos open-book exam. Every person listed on the application submits Live Scan fingerprints for a California Department of Justice and FBI background check; CSLB sends instructions once it accepts the application. Every applicant also completes an open-book exam on asbestos abatement standards on CSLB's website. A license cannot issue without both.
3. Scheduling with PSI. When the application clears review, CSLB mails a Notice to Schedule an Examination and PSI — the board's testing vendor — sends a Candidate Information Bulletin. You self-schedule and pay PSI directly; each exam carries its own fee and the two can be booked for the same day or weeks apart. PSI operates 20 test centers in California, and while the Law and Business exam may be taken out of state, trade exams must be taken in California or Oregon.
4. Two exams, 3½ hours each. Every applicant must pass a Law and Business exam and the B trade exam. Both are computer-based multiple choice, and each allows 3½ hours. Arrive 30 minutes early with government-issued photo identification. Results are given before you leave the test center, and a failing report shows how you performed section by section. B is one of ten CSLB exams published in an official Spanish version — and for those ten, a candidate who requests a translator must take the Spanish version instead. Our free B General Building practice test and Law & Business practice pages cover what each exam asks.
5. If you fail one. Candidates who fail may retake after 21 calendar days, paying a re-examination fee to PSI — $100 per attempt according to CSLB's booklet — as long as they are still inside the 18-month window that starts the day CSLB accepts the application. Miss that window and the application is void; you file again with new fees. Exam results are good for five years, so only the failed exam has to be retaken.
6. Bond, license fee, insurance. Passing produces a Bond and Fee letter listing what is left. For an active license that means a $25,000 contractor's surety bond or cashier's check filed with CSLB; the initial license fee of $200 for a sole owner or $350 for a non-sole owner, covering two years; and proof of workers' compensation insurance if you hire employees residing in California, employ home improvement salespersons, or your qualifier is an RME — otherwise a signed Exemption from Workers' Compensation. Corporations and LLCs also file a $25,000 bond of qualifying individual for every RME and for any RMO owning under 10 percent of the voting stock; an LLC adds a $100,000 worker bond and liability insurance.
Using only figures CSLB publishes: $450 application plus a $200 or $350 initial license fee comes to $650 for a sole owner or $800 for a non-sole owner, for one classification. Fingerprinting adds $32 to the Department of Justice and $17 to the FBI, plus a Live Scan rolling fee each site sets itself. A missed or failed exam costs $100 to reschedule. Bond and workers' compensation premiums come from private surety and insurance companies, not CSLB, so no honest single number exists for them.
CSLB does not publish a fixed timeline, and neither will we. What it does publish is its current application processing times, updated on its website — check that rather than any prep school's promise. The stages are fixed even when their durations are not: application filed, reviewed and accepted, Notice to Schedule issued, fingerprints and asbestos exam completed, both exams passed, bond and fee and insurance filed, license issued. The one hard deadline in that sequence is the 18 months you have to pass both exams.
A contractor license is issued for two years and expires two years from the last day of the month in which it was issued. Active licenses then renew for two years, inactive licenses for four. CSLB's fee list puts a timely active renewal at $450 for a sole owner and $700 for a non-sole owner; let it go delinquent and the same renewal is $675 or $1,050. Between renewals the obligations are the unglamorous ones: keep the $25,000 bond in force, keep workers' compensation coverage or the exemption on file current, and under B&P § 7030.5 include your license number in every construction contract, every subcontract and call for bid, and every form of advertising. And keep in mind the threshold that makes all of this matter — any construction project in California valued at $500 or more in combined labor and materials must be performed by a licensed contractor.
Ready to practice for the exams? The Class B licensing guide practice bank on LICENA: real-exam-style questions with a written explanation on every answer, in English, Spanish and Russian. The sample is free — no sign-up.
Try the free practice test → CSLB Law & Business