How to get a contractor licence in California
Seven steps, three organisations and two exams. Here is the order they actually happen in, and where people lose months.
California is strict about this. Almost any construction work above the minor-work threshold, and any work needing a building permit, has to be done by a contractor licensed by CSLB. Doing it unlicensed is not a paperwork problem — it costs you the right to sue for payment.
The process below is CSLB's own seven steps, with the detail that matters at each one.
Step 1: Check that you qualify
Every licence has a qualifier — the person who directly supervises and controls the construction work done under it. That can be you, or someone else who meets the bar on your behalf. The qualifier must:
- be at least 18 years old;
- have a valid Social Security number or an ITIN;
- have four years of at least journey-level experience in the last 10 years in the classification applied for — as a journeyperson, foreperson, supervising employee or contractor.
A journeyperson means an experienced worker who can do the trade without supervision, not a trainee. Your experience is confirmed by someone who saw you do it: an employer, a fellow employee, another journeyperson, a contractor or a union representative.
You can shorten the four years, but not all of it. CSLB may grant credit for a completed apprenticeship, technical training or completed education at an accredited school, with certificates and official transcripts submitted alongside the application. High school coursework earns nothing. And whatever credit you get, every qualifier must still show at least one year of practical journey-level experience. Veterans have a dedicated assistance programme with expedited processing and evaluation of transferable military training.
Step 2: Get your experience documented before you need it
A randomly selected share of applications is pulled for extra investigation, and the qualifier may be asked to prove the experience claimed. Tracking down an old foreman who can certify your 2019 work is much harder in a panic than it is now.
Have the name, current contact details and licence number (if any) of the person who will certify each period of experience, plus anything corroborating: pay records, contracts, permits with your name on them.
Step 3: Pick your classification and complete the application
CSLB licenses contractors in 44 classifications — A (General Engineering), B (General Building) and the C-specialties. You apply for the classification your experience is in, and your trade exam is the exam for that classification. The C‑61 Limited Specialty classification has no trade exam at all.
Forms and instructions are on cslb.ca.gov. Every application needs an SSN or ITIN. If you want to use a translator for the exam, tick the box in Field 16 on the application — that is where the request is made, not later.
Step 4: Submit the application with $450
A non-refundable $450 processing fee must accompany the application. CSLB is blunt about it: the fee pays for processing whether or not your application is accepted, and it will not be refunded.
Do not send the bond or the initial licence fee at this point. Those come later, when CSLB asks for them.
Once it is filed, you get a nine-digit application fee number and a four-digit PIN. Keep both — together they let you check your application status online or by phone. The full cost breakdown is on our licence cost page.
Step 5: Fingerprints and the asbestos exam
Two requirements that sit quietly in the background and hold up licences when people forget them.
- Fingerprints. Every applicant — and every person listed on the application — submits a full set of fingerprints through a Live Scan operator for a DOJ and FBI criminal background check. CSLB tells you how once it accepts the application.
- Asbestos open book exam. Before a licence can be issued, every applicant must complete CSLB's open book exam on asbestos abatement standards. It is on the CSLB website, or available on paper by phone. It is open book and it is not the hard part — it is just easy to overlook.
Step 6: Pass both exams
When your application is accepted and referred for testing, CSLB posts you a Notice to Schedule an Examination. Only then can you book: you cannot pre-schedule. Booking and payment are handled by PSI, online at test-takers.psiexams.com/cacon or by phone.
You take two computer-based exams, unless a waiver applies:
- the Law and Business exam — seven sections covering contracts, employment, finances, safety, licensing, insurance and liens, and public works;
- the trade exam for your classification (none for C‑61).
Each exam gives you 3½ hours, closed book, multiple choice with four options and one best answer. You get your result before you leave the test centre.
The clock that matters: you have 18 months from the day CSLB accepts your application to pass. Miss it and the application is void — new application, new fees. If you fail, you can retake after 21 calendar days, for $100 a time. And because results are good for five years, passing one exam and failing the other means only the failed one has to be retaken. See what happens after a failed exam.
Step 7: Bond, insurance, licence fee — then the licence
Pass, and CSLB posts a Bond and Fee letter to your business address listing exactly what your application still needs. Typically:
- a $25,000 contractor's bond filed with CSLB (you buy it from a surety company and pay a premium, not $25,000);
- a bond of qualifying individual, if an RMO or RME is qualifying the licence and no exemption applies;
- proof of workers' compensation insurance, or a valid exemption — required if you have employees, and required regardless for some classifications;
- the initial licence fee: $200 for a sole owner, $350 for a non-sole owner, covering two years.
The pass report is not a licence. The licence is issued when CSLB has all of that.
How long does the whole thing take?
CSLB does not publish a processing time, and it genuinely varies — many factors affect how long review takes, and a randomly selected share of applications gets extra investigation. What you can plan around are the fixed points:
| Wait between exam attempts | 21 calendar days |
| Deadline to pass, from application acceptance | 18 months |
| How long a passed exam stays valid | 5 years |
| Arrive at the test centre before your slot | 30 minutes early |
The part you control is the exam. Everything else is queueing.
A free option worth knowing about. CSLB runs a live "Get Licensed to Build" workshop on the first Friday of every month, with a Spanish version on the third Friday. It is free, it is the board itself explaining its own process, and it is the cheapest way to get your specific question answered by someone who actually decides these things.
Common questions
Do I need a licence for small jobs?
The minor-work exemption is narrow and the threshold has moved — the CSLB Law Book for 2026 uses $1,000 in combined labour and materials, and the job must not require a building permit. Older printed material still shows $500. Above the threshold, or any permitted work, you need a licence.
Can someone else qualify my licence?
Yes — a responsible managing officer (RMO) or responsible managing employee (RME). There are rules about how much of their time the business gets and how many licences one person can qualify, and a bond of qualifying individual is usually required.
Does CSLB recommend a licence school?
No. CSLB states that no school or application preparation organisation is affiliated with or an agent of CSLB. Its own study guides are free on its website.
Can I take the exams in Spanish?
Yes. Spanish versions exist for ten exams including Law and Business, B General Building, C-8, C-9, C-15, C-27, C-33, C-36, C-39 and C-54. Request the translator box on the application.
What if my application is denied?
The $450 is still gone. That is the main argument for getting the experience documentation right before submitting, not after.
Last reviewed 16 September 2026 against CSLB's Get Licensed to Build, its Examinations FAQ and its published fee list. Requirements change; confirm at cslb.ca.gov before acting. This is study guidance, not legal advice, and we are not affiliated with CSLB or PSI.