Redwood Trade Guide

Filing a Complaint Against a California Contractor

The Contractors State License Board takes complaints about licensing-law violations for up to four years from the date of the act, and it takes them about unlicensed people as well as licensed ones. It is a regulatory body. The Board states plainly that recovering your money is not what its investigation is for.

What the Board says it does

The Board’s own complaint page opens by setting the boundary. It states that “CSLB addresses violations of California Contractors License Law, whether the contractor is licensed or unlicensed, for up to four years from the date of the act. CSLB is a regulatory board with authority to investigate and take administrative disciplinary action against licensed and unlicensed persons and entities for violations of Contractors State License Law”, on its Filing a Construction Complaint page.

Two things in that sentence do real work. The window is four years from the date of the act, not from the date it was noticed. And the Board’s reach covers unlicensed people, so the absence of a license does not put somebody outside it — what happens to them is covered at working without a license.

What the Board says it does not do

This is the part most worth reading first. The same Filing a Construction Complaint page states: “The primary purpose and highest priority for CSLB is the protection of the public. The purpose of a CSLB investigation is not to obtain restitution, and a CSLB investigation does not guarantee complainants will receive restitution. Consumers whose primary goal is to recover financial restitution from a contractor should consider pursuing damages through the courts.”

That is the Board describing its own function, and it is the clearest statement of what a complaint is and is not. A complaint is a report to a regulator. Where money is the object, the Board’s own page points elsewhere.

There is one place the two connect. The Board states that “CSLB has the authority, with sufficient proof, to suspend the license of any contractor who fails to satisfy final judgments that are substantially related to construction activities”, again on its Filing a Construction Complaint page.

Who can file

The Board’s complaint form is not limited to homeowners. Its Filing a Construction Complaint page says to “Use this form if you are a homeowner, other contractor, subcontractor, or employee who wants to file a complaint against a contractor. Public agencies also may file complaints using this form.”

The step the Board asks about first

Expect a question about prior notice to the contractor. The Board states that “CSLB will ask if you have formally notified your contractor of your concerns with the project”, on its Filing a Construction Complaint page.

Before you hire, rather than after

The Board runs a public license lookup, and it shows complaint disclosure alongside license status. Checking it costs nothing, and it is the one step that happens before a dispute exists rather than after. How to read what it returns is at check a license before you hire. What the Board requires of a licensed contractor in the first place is at what a licensed contractor must satisfy, and the structure the whole system rests on is set out at licensing a contractor in California.

This page describes the rules; it does not advise on your situation. Licenses are issued by the Contractors State License Board, which this site is not affiliated with. Rules and fees change; last checked 2026-09-22.