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CSLB's unlicensed practice study: what it found

CSLB's September 2026 study estimates more than 70,000 unlicensed contractors in California, and names three sections licensees break: 7030.5, 7117 and 7033.

Published
2026-09-11

More than 70,000 individuals and businesses may be working as unlicensed contractors in California. That is the headline of the Final Analytical Study Report on Unlicensed Practice and Resource Needs, which the Contractors State License Board (CSLB) brought to its September 2 and 3, 2026 board meeting as agenda item D-3. The board’s own Examination Development Unit did the work in-house after the board had planned to hire outside consultants, and the report folds in what the Joint Enforcement and Public Affairs Committee said about the draft on August 4, 2026.

For a Law and Business candidate the number is background. What matters is the report’s second finding: licensed contractors break three sections of the license law often enough to make some of them look unlicensed in public records.

How the study got to 70,000

The report compares CSLB’s master license list, which held 242,847 licensed contractors on December 1, 2025, against four outside datasets, and each comparison lands in the same range.

  • Complaints. In 2024 CSLB opened 15,748 complaints against licensed contractors and 4,646 against unlicensed ones. Scaling the unlicensed share by the same complaint rate gives about 71,645 unlicensed contractors.
  • City business licenses. Thirty-six cities supplied their registered construction businesses, 33,828 in all. After matching, 20,655 of them (62 percent) did not appear in CSLB’s records, which extrapolates to about 78,973 statewide.
  • Employer records. Of 111,109 California construction employers in a commercial database filtered by industry code, 70,840 (64 percent) matched no CSLB license.
  • Online advertising. Staff collected 18,120 construction ads posted on Craigslist between March 8 and April 8, 2026, reduced them to 5,140 unique advertisers, and found that only 1,013 (20 percent) carried a valid CSLB license number.

The report is candid that extrapolation needs assumptions, and that the committee treated the agreement across the four sources as the reason to act. It also says the reverse in plain terms: some businesses that look unlicensed in these datasets may hold a license and be presenting themselves in a way the statute does not allow.

The three sections the report says get broken

Bus. & Prof. Code s. 7030.5 requires every licensee to include the license number in all construction contracts, in subcontracts and calls for bid, and in all forms of advertising as prescribed by the registrar. The registrar’s definition is 16 CCR s. 861, and it is wide: cards, contract proposals, signs, billboards, lettering on vehicles, brochures, newspapers, airwave or electronic transmissions, and any directory listing under “Contractor” or a similar word. A Craigslist ad is an electronic transmission. Four in five of the advertisers the study reviewed had no valid number on them.

Section 7117 makes it a cause for discipline to act as a contractor under a license in any name other than the name on the license, or with personnel other than those on the application as later changed. The study found business names in city and commercial records that did not match the licensed name, which is why the matching algorithms could not find them.

Section 7033 puts a duty on cities. Any city that requires a business license before a person can do work regulated by the license law has to collect a signed statement that the applicant holds a state contractor license in full force, or proof of the exemption they rely on. The committee heard that many cities do not ask for the CSLB number, make it optional, or accept whatever is typed into the box, and that consumers routinely mistake a city business license for a state contractor license.

What the law already does to an unlicensed operator

None of this changes the penalties; the study is about finding people, not fining them. The rules a candidate is examined on stay where they were.

Contracting without a license is a misdemeanor under s. 7028. A first conviction carries a fine of up to $5,000, up to six months in county jail, or both. A second conviction brings a fine of 20 percent of the contract price or $5,000, whichever is greater, and at least 90 days in jail unless the court states its reasons on the record for something lighter.

Advertising for work that needs a license, without holding one in that classification, is a separate misdemeanor under s. 7027.1, with a fine of $700 to $1,000 on top of any other punishment. Under subdivision (d) the registrar may instead issue a citation under s. 7028.7, and from July 1, 2026 that citation carries a civil penalty of $1,500 to $15,000 (the July 2026 fine changes walk through the new table).

And an unlicensed contractor cannot sue to be paid. Section 7031(a) bars any action to collect compensation for work that required a license unless the person was duly licensed at all times during the work, regardless of the merits of the claim. Subdivision (b) lets the customer sue to get back everything already paid.

What CSLB says it will do next

The report’s recommendations are about resources. CSLB has 27 investigators for 58 counties, and the committee’s consensus was that the board should pursue a Budget Change Proposal to add staff, expand undercover sting operations, build an application programming interface (API) so cities can check a license number against CSLB’s database as they issue a business license, upgrade the public license lookup tool, and run more licensing workshops and consumer campaigns. The report lists those steps as things CSLB will do “with Board approval at the September Board meeting”. The report was written before that meeting, so whether the board approved them will be in the September minutes when CSLB posts them.

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