California Contractor License: Classifications, Requirements and Cost

California licenses contractors through the Contractors State License Board. You need a license once a project requires a building permit, uses additional workers, or the labor and materials on one or more contracts reach $1,000 — and you must hold it before you submit a bid. The Board issues four classifications, decided by the kind of work.

Who has to be licensed

The Board states the test plainly. All businesses or individuals who construct or alter any building, highway, road, parking facility, railroad, excavation or other structure in California must be licensed “if the project requires a building permit or uses any additional workers or the total cost (labor and materials) of one or more contracts on the project is $1,000 or more” (CSLB). The same page adds that contractors, subcontractors, specialty contractors and people in the home-improvement business “must be licensed before submitting bids”.

Read the three conditions carefully, because they are joined by or. A $400 job that needs a permit is licensed work. So is a $400 job on which you hire a helper. The dollar figure alone is not the test, and the statutory exemption in Business and Professions Code § 7048 only applies where the price is under $1,000 and the work is “of casual, minor, or inconsequential nature” and it does not require a building permit. Our unlicensed contracting page sets the exemption out in full, and the license requirements page covers what the Board requires of an applicant. That threshold moved to $1,000 effective 1 January 2026, so any summary written before then carries a different number.

Who is licensed is a second question, and it is settled before any of the rest. Licenses “may be issued to individuals, partnerships, corporations, joint ventures, or limited liability companies” (CSLB), and the form chosen decides both what the license costs and which route qualifies it.

The four classifications

Section 7055 begins “For the purpose of classification, the contracting business includes any or all of the following branches”, and names general engineering, general building, residential remodeling and specialty contracting (Article 4). The Board’s own labels for those are A, B, B-2 and C (CSLB).

What matters for choosing is that California decides classification by what you build, not by what a project is worth. There is no value tier sitting above the classification. Our page on the four classifications walks through each branch and the trade-count tests that separate B from B-2. The numbered C classifications each carry a scope of their own, and the Board’s trade classifications page is where this site starts on them.

Money, time and keeping it

The original application fee in one classification is $450, with the initial license fee charged separately (CSLB fee schedule). A $25,000 contractor’s bond is a condition of an active license (§ 7071.6) — that sum is the bond, not what one claimant recovers, because the surety’s aggregate liability for most claims is capped at $7,500 — which we cover under the contractor bond. Licenses run for two years (§ 7140). See what a license costs and renewing a license.

Getting licensed means passing two examinations and showing four years of qualifying experience — the two examinations and the application process cover both. If you already hold a license in another state, out-of-state reciprocity lists the five states CSLB has a program with.

Working without a license is a misdemeanor, set out under contracting without a license. If you are a homeowner rather than a contractor, the fastest useful thing you can do is check a contractor’s license before you sign anything.