How to File a CSLB Complaint for Solar Fraud in California
Complete guide to filing a solar contractor complaint with California's CSLB. Learn the complaint process, what to include, and additional agencies that can help.
How to File a CSLB Complaint for Solar Fraud in California
Disclaimer: This article is informational, not legal advice. For guidance specific to your situation, consult with a qualified California attorney.
The Contractors State License Board (CSLB) is California's primary enforcement body for solar contractor complaints. If you have been defrauded by a solar installer in California — whether through poor workmanship, unlicensed activity, abandoned projects, or contract fraud — the CSLB is one of your most powerful tools for accountability.
This guide covers everything you need to know about filing a CSLB complaint for solar fraud, including how to verify a license, what the CSLB investigates, the investigation process, and additional agencies that can help.
What the CSLB Does
Authority and Jurisdiction
The CSLB regulates California's construction industry, including solar contractors, under the Business and Professions Code. The board's authority includes:
| Function | Description |
|---|---|
| Licensing | Issues and renews contractor licenses including C-46 (solar) classifications |
| Enforcement | Investigates complaints against licensed and unlicensed contractors |
| Discipline | Issues citations, suspensions, and revocations of contractor licenses |
| Criminal referral | Refers cases to local district attorneys for criminal prosecution |
| Consumer education | Provides resources to help homeowners make informed hiring decisions |
| Recovery fund | Administers the Contractors Recovery Fund for qualifying victims |
Solar Contractor Licensing (C-46)
In California, anyone installing solar panels must hold a valid C-46 Solar Contractor license — or work under the direct supervision of someone who does. The C-46 classification authorizes the holder to install, modify, maintain, and repair solar energy systems.
Requirements for a C-46 license:
- Minimum 4 years of journeyman-level experience
- Pass trade and law/business examinations
- Carry a $15,000 contractor bond
- Maintain workers' compensation insurance (if employees)
- Clear criminal background check
How to Verify a License
Online License Lookup
Before filing a complaint — or before hiring any solar contractor — verify their license through the CSLB's online system.
Steps to verify:
- Visit cslb.ca.gov/OnlineServices/CheckLicense
- Enter the contractor's license number or business name
- Review the license details including:
| What to Check | What to Look For |
|---|---|
| License status | "Active" — not expired, suspended, revoked, or inactive |
| Classifications | C-46 listed for solar work |
| Bond information | Current $15,000 contractor bond on file |
| Workers' comp | Certificate on file if the company has employees |
| Disciplinary actions | Any past or pending disciplinary history |
| Business address | Matches the address the contractor provided to you |
| Personnel | Responsible managing officer (RMO) or employee (RME) listed |
Red Flags in a License Check
Be concerned if:
- The license is inactive, suspended, or expired
- The license does not include the C-46 classification
- There is no bond on file or the bond has lapsed
- There are disciplinary actions on record
- The company is using another company's license number (potentially illegal)
- The license was recently issued and the company has minimal history
For more about verifying installers, see our solar installer legitimacy check guide.
Filing a CSLB Complaint
Step-by-Step Process
Step 1: Gather Your Information
Before filing, collect the following:
- Contractor's license number (find it on your contract, proposal, or the CSLB website)
- Contractor's business name and address
- Your contract — signed agreement, proposals, change orders, financing documents
- Evidence of the problem — photographs, inspection reports, correspondence
- Financial documentation — receipts, cancelled checks, proof of payments
- Timeline of events — dates of contract signing, installation, problems discovered
Step 2: File Online or by Mail
| Method | Instructions |
|---|---|
| Online | Visit cslb.ca.gov and navigate to "File a Complaint" |
| Download Form 13A-5 (Complaint form) from the CSLB website and mail to the nearest CSLB regional office | |
| Phone | Call (800) 321-CSLB (2752) for assistance with the complaint process |
Step 3: Complete the Complaint Form
Provide the following information:
| Section | What to Include |
|---|---|
| Complainant information | Your name, address, phone, email |
| Contractor information | License number, business name, address, phone |
| Project details | Address where work was performed, contract date, contract amount |
| Description of complaint | Clear, chronological narrative of what went wrong |
| Specific issues | Check applicable boxes: abandoned work, poor workmanship, unlicensed activity, etc. |
| Desired outcome | What resolution you are seeking |
| Supporting documents | Attach copies of all relevant documentation |
Step 4: Submit and Follow Up
After submitting your complaint:
- Keep your complaint number — the CSLB will assign a case number
- Respond promptly to any CSLB requests for additional information
- Be available for a potential inspection or interview with an investigator
- Keep records of all communications with the CSLB
What the CSLB Investigates
Complaint Categories
The CSLB accepts complaints in several categories relevant to solar installations:
| Complaint Type | Examples | Priority Level |
|---|---|---|
| Poor workmanship | Leaky roof penetrations, improper wiring, structural damage | Medium-High |
| Unlicensed activity | Installer working without a valid C-46 license | High |
| Abandonment | Contractor started work and failed to return | High |
| Code violations | Installation not meeting California Electrical or Building Code | High |
| Contract fraud | Misrepresentation, false promises, bait-and-switch | Medium-High |
| Failure to pay subs | Contractor did not pay subcontractors or suppliers (affects your property) | Medium |
| Unsafe conditions | Electrical hazards, fire risks from improper installation | Critical |
What the CSLB Does NOT Investigate
The CSLB has specific jurisdiction over contractor licensing and construction practices. They generally do not handle:
- Purely financial disputes — Disagreements over pricing or contract interpretation
- Financing issues — Problems with solar loans, leases, or PPAs
- Production disputes — System not producing as much as estimated (unless tied to installation defects)
- Warranty disputes — Unless the workmanship itself is defective
- Neighborhood or HOA disputes — Aesthetic complaints or property line issues
For these issues, see our guide on complaints against solar companies or consult with a solar attorney in California.
The Investigation Process
Stages of a CSLB Investigation
| Stage | Timeline | What Happens |
|---|---|---|
| Intake | 1-2 weeks | Complaint reviewed for completeness and jurisdiction |
| Assignment | 2-4 weeks | Case assigned to an investigator in your region |
| Investigation | 4-16 weeks | Investigator contacts parties, inspects the work, reviews documents |
| Findings | 2-4 weeks | Investigator completes report with findings and recommendations |
| Action | 2-8 weeks | CSLB determines appropriate enforcement action |
Possible Outcomes
| Outcome | What It Means |
|---|---|
| Citation | Formal notice of violation with fines ($200-$15,000+) and corrective orders |
| Formal accusation | License suspension or revocation proceedings initiated |
| Criminal referral | Case referred to the local DA for criminal prosecution (unlicensed activity, fraud) |
| Mediation | CSLB may facilitate voluntary resolution between parties |
| No action | Insufficient evidence or outside CSLB jurisdiction |
| Recovery fund | Victim may apply to the Contractors Recovery Fund (up to $75,000 for licensees, $12,500 for unlicensed) |
What to Expect During the Investigation
The CSLB investigator may:
- Contact you for additional information or to schedule an inspection
- Inspect the installation at your property to assess code compliance and workmanship
- Contact the contractor for their response to your allegations
- Request additional documents from either party
- Consult with specialists for complex technical issues
Your role: Be responsive, provide all requested documentation promptly, and be available for the inspection. The more cooperative and organized you are, the smoother the investigation.
Other California Agencies
California Public Utilities Commission (CPUC)
File with the CPUC when your complaint involves:
- Net Energy Metering (NEM) issues — Problems with interconnection, billing credits, or true-up calculations
- Utility disputes — Problems with your utility company related to solar
- Rate schedule issues — Being placed on the wrong rate plan after solar installation
How to file: Visit cpuc.ca.gov/complaints or call 1-800-649-7570.
California Attorney General
File with the CA AG when your complaint involves:
- Consumer fraud — Systematic deceptive practices affecting multiple consumers
- Elder abuse — Targeting senior citizens with fraudulent solar schemes
- False advertising — Misleading marketing claims
How to file: Visit oag.ca.gov/contact/consumer-complaint-against-business-or-company
Federal Trade Commission
File with the FTC when your case involves:
- Cross-state fraud — Company operates in multiple states
- Telemarketing violations — Robocalls, Do Not Call violations
- Financing fraud — TILA violations, undisclosed loan terms
How to file: Visit reportfraud.ftc.gov
For a comprehensive guide to California solar scams, visit our California solar scams guide.
When the CSLB Can't Help
Seeking Civil Remedies
If your complaint falls outside CSLB jurisdiction — such as a financing dispute, contract interpretation issue, or purely economic damages — you may need to pursue civil remedies:
| Option | When to Use | Limits |
|---|---|---|
| Small claims court | Damages under $12,500 (individuals) | No attorney representation |
| Civil lawsuit | Damages over $12,500 | Requires attorney; longer timeline |
| Arbitration | Required by your contract's arbitration clause | Binding; limited appeal rights |
| Mediation | Both parties willing to negotiate | Non-binding; voluntary |
Small Claims Court in California
For many solar fraud victims, small claims court provides an accessible path to recovery:
| Element | Details |
|---|---|
| Filing limit | $12,500 for individuals, $6,250 for businesses |
| Filing fee | $30-$75 depending on claim amount |
| No attorney needed | You represent yourself |
| Hearing timeline | Typically 30-70 days from filing |
| Appeal | Either party can appeal for a new trial |
| Enforcement | If you win, you may need to take steps to collect |
What you can claim in small claims for solar fraud:
- Refund of payments made
- Cost to repair defective installation
- Difference between promised and actual system value
- Costs of removing non-compliant equipment
- Penalties for unlicensed contractor work (if applicable)
For complex cases exceeding small claims limits or involving legal questions about contract interpretation, consult with a solar contract lawyer.
FAQ
How long does a CSLB investigation take?
Most CSLB investigations take 4-6 months from complaint filing to resolution. Complex cases involving extensive inspections, multiple parties, or potential criminal referrals may take longer. The CSLB prioritizes complaints involving health and safety hazards, unlicensed activity, and abandoned projects. You can check on your complaint status by calling (800) 321-CSLB with your case number.
Can the CSLB get me a refund?
The CSLB can order a contractor to correct defective work, pay fines, or face license discipline — but they cannot directly order a refund. However, CSLB findings and citations serve as powerful evidence if you pursue a refund through small claims court, civil litigation, or arbitration. The CSLB's determination that a contractor violated the law significantly strengthens your case for financial recovery.
What if my contractor is unlicensed?
Working with an unlicensed contractor on a project valued at $500 or more (total cost of labor and materials) is illegal in California. The CSLB aggressively pursues unlicensed activity, which is a criminal misdemeanor punishable by fines and jail time. As a homeowner, you may have additional rights against unlicensed contractors, including the ability to recover all money paid. File a complaint with the CSLB immediately and consider contacting local law enforcement.
Do I need a lawyer to file a CSLB complaint?
No. The CSLB complaint process is designed for consumers to use without legal representation. You can file online or by mail, and the CSLB will investigate your claims independently. However, if your case involves significant financial losses, financing disputes, or complex legal issues beyond the CSLB's jurisdiction, consulting with a California solar attorney can help you understand all your options.
What happens to the contractor after a CSLB complaint?
Depending on the severity of the violations, consequences can include: a citation with fines ($200-$15,000), mandatory corrective work orders, license suspension (temporary), license revocation (permanent), or criminal prosecution referral. Multiple complaints against the same contractor accelerate enforcement. The CSLB maintains a public record of all disciplinary actions, which is searchable on their website and warns future consumers.
Got blindsided by a solar deal that did not deliver?
You may have a claim — and the law may make the company that defrauded you pay your legal fees. Our 2-minute eligibility check screens for the consumer-protection statutes that apply to your situation (TILA § 130, the FTC Holder Rule, your state UDAP) and connects you with a consumer-protection attorney in our network if you qualify. Free review, no upfront cost, no obligation.