Verify the License Before You Commit
Use California’s official CSLB License Check before signing, paying a deposit or trusting a number shown in an advertisement. The legal business, status, classification and personnel should match the company offering the project.
This guide explains how to search, read the complete record, check bond and workers’ compensation information, control deposit and lien risk, verify a salesperson, and choose the correct application or complaint route.
California Contractor License Check: Quick Answer
Open CSLB’s official License Check. Search by contractor license number, legal business name, contractor or personnel name, Home Improvement Salesperson registration number, or salesperson name.
After opening the full detail, verify active status, the exact licensed entity, project classification, qualifier and personnel, expiration date, contractor bond, workers’ compensation information and public disclosures. Save the result before signing and check it again before work starts.
Official CSLB License Check Page
The official page offers separate search routes for a contractor license number, business name, personnel name and Home Improvement Salesperson registration. Choose the route matching the strongest information you already have.
How to Search CSLB by License Number or Name
A license-number search is normally the fastest route, but CSLB also supports business, personnel and Home Improvement Salesperson searches.
Get the number in writing
Ask the contractor to place the CSLB number and legal business name on the estimate. Compare it with advertisements, the contract, permit paperwork and requested payment name.
Enter only the numeric license number
California contractor license numbers contain no letters and should not exceed eight digits. Remove “CSLB,” spaces, dashes and punctuation.
Use a shorter business-name search when needed
CSLB recommends entering approximately the first 10 to 15 characters and trying fewer characters when no result appears. Remove commas and periods. If the business starts with “The” or “A,” try without that word first.
Search the qualifier or personnel
Use the personnel-name search when an individual is the main identifier or when you need to verify that an owner, officer, employee or qualifier is connected with the license.
Verify the Home Improvement Salesperson
An HIS number may contain up to eight numeric digits followed by “SP.” Confirm that the salesperson is registered and associated with the contractor offering the agreement.
Open the full license detail
Do not stop when a matching name appears. Open the detail page and compare every important field with the actual project documents.
Tool 1: CSLB Search Route Helper
Select the strongest information you have. The result explains which official search option to use first.
What to Verify in the CSLB License Result
An active record is not enough when the company, classification, personnel, bond or workers’ compensation details do not fit the actual project.
| Record field | What it means | What to compare | Reason to pause |
|---|---|---|---|
| Status and expiration | Whether the license is active and current. | Check before signing and again before work begins. | Inactive, expired, suspended, cancelled or unclear status. |
| Business identity | The legal entity holding the license. | Bid, contract, invoice, permit and payment recipient. | Another person or company is using the number. |
| Classification | The type of construction work authorized. | Every important part of the proposed project. | The license does not cover the project scope. |
| Personnel and qualifier | People associated with or qualifying the entity. | Owner, salesperson and project-representative claims. | The claimed owner or qualifier is not connected. |
| Contractor bond | Current and historical bond information filed with CSLB. | Effective dates, cancellations and business name. | Bond cancellation or resulting suspension. |
| Workers’ compensation | Insurance, self-insurance or exemption information filed with CSLB. | Employee use, policy dates, qualifier type and classification. | Workers are used while an exemption is shown. |
| Public disclosures | Disciplinary, legal-action, complaint or judgment information CSLB may publicly disclose. | Read the date, facts and outcome. | A material disclosure is hidden or misrepresented. |
Tool 2: CSLB Record Safety Checker
Open the live result, then answer each question. This helper does not certify or endorse a contractor.
When Is a California Contractor License Required?
The contractor-license threshold and the written-contract threshold solve different problems. California generally requires a contractor license at $1,000, while home improvement work over $500 generally requires a written contract.
$1,000 project threshold
A properly classified contractor license is generally required when the complete project reaches $1,000 in labor, materials and other project costs.
Permit-required work
The narrow minor-work exemption does not apply when the work requires a building or other construction permit, even when the price is below $1,000.
Employees or additional workers
The exemption does not apply when the unlicensed person uses employees or additional workers to perform the job.
The under-$1,000 exemption is narrow
- The total project must remain below $1,000.
- No construction permit can be required.
- No employees or additional workers can be used.
- The person cannot claim or advertise that they are licensed.
- A larger project cannot be divided into smaller contracts to avoid licensing.
California Contractor Rules That Changed in 2026
These changes are easy to miss because many older hiring guides still show earlier contract and enforcement rules.
Email cancellation information
Home improvement contracts now must include the contractor’s email address and allow the buyer to cancel by email when the applicable cancellation right exists. The agreement also needs a telephone number that helps the buyer locate and complete the Notice of Cancellation.
Subcontractor details upon request
When a consumer requests it, the contractor must disclose subcontractors used on the home improvement project, including their names, contact information, license numbers and classifications.
Workers’ compensation enforcement
Licenses cannot be renewed or reinstated in violation of applicable workers’ compensation requirements until CSLB receives a current, valid certificate or other acceptable documentation.
Higher unlicensed-activity penalties
Beginning July 1, 2026, minimum civil penalties for specified unlicensed contracting violations increased to at least $1,500, with other minimum penalties applying to additional violations.
Contractor Bond and Workers’ Compensation Checks
The contractor license bond, workers’ compensation and general liability insurance are separate protections. None proves workmanship or guarantees complete reimbursement.
$25,000 contractor license bond
California contractor licenses generally require a $25,000 contractor bond or approved cash alternative. The bond benefits qualifying consumers and others harmed by specified license-law violations, but the amount is not reserved for one customer or one project.
Contact the surety shown in the CSLB record when considering a bond claim. Provide a written loss description, contract, payment records and supporting evidence.
Workers’ compensation rules in 2026
Contractors using employees must carry workers’ compensation or valid self-insurance. An ordinary exemption is not available when the qualifier is a Responsible Managing Employee or when the license contains classifications CSLB identifies as requiring coverage regardless of employee status, including concrete, HVAC, asbestos, roofing and specified tree-service classifications.
A March 2026 CSLB report states that the universal requirement for all licensed contractors—even those without employees—is scheduled for January 1, 2028. Do not rely on older bulletins that still describe a 2026 universal deadline.
General liability insurance is different
General liability coverage is not the contractor license bond and may not be shown as a required field on every CSLB license. Ask the contractor’s insurer or agent to send a current certificate using the exact licensed business name.
- Match the bonded business name and license number to the contract.
- Check bond effective and cancellation dates.
- Confirm who will work on the project.
- Question an exemption when employees appear on the job.
- Request a separate general liability certificate.
- Confirm policy dates cover the planned construction period.
California Contractor Hiring Checklist
The safest process combines the official record, comparable bids, a detailed written contract, permit verification, lien controls and staged payments.
Verify before choosing
- Active license and expiration date.
- Exact legal business name.
- Classification covering the full project.
- Current bond information.
- Workers’ compensation matching the labor plan.
- Qualifier, personnel and public disclosures.
- HIS registration when a salesperson negotiates the job.
Stop and clarify when
- The payment name differs from the license holder.
- The license belongs to a relative or another company.
- The contractor requests an owner-builder permit.
- The deposit exceeds the normal California limit.
- You are pressured to pay cash or sign immediately.
- The salesperson cannot be matched to the contractor.
- The classification does not cover important work.
Compare the same scope in at least three bids
Ask each contractor to price the same demolition, preparation, materials, permit work, inspections, cleanup, warranty and payment milestones. A vague low bid is not comparable with a complete bid.
Confirm the local permit route
Contact the city or county building department serving the property. Ask which permits and inspections apply, who should obtain them, and whose license should appear on the permit.
Home Improvement Contract and Deposit Rules
California generally requires a written home improvement contract when the project exceeds $500. The written agreement should be specific enough to control scope, price, payments, changes, permits and completion.
| Contract item | What it should explain | Why it protects you |
|---|---|---|
| Licensed identity | Legal name, address and CSLB number. | Prevents use of another entity’s license. |
| Scope and materials | Brands, models, grades, colors, quantities, preparation and exclusions. | Reduces vague “install cabinets” or “paint area” disputes. |
| Price and payment schedule | Total price, deposit and value-based progress milestones. | Keeps payments from getting ahead of work and delivered materials. |
| Permits | Who obtains permits and schedules inspections. | Avoids unpermitted work and owner-builder confusion. |
| Change orders | Added work, price and time approved in writing. | Prevents surprise verbal charges. |
| Cancellation | Required notices, contractor email and applicable email-cancellation method. | Documents how a lawful cancellation can be delivered. |
| Completion | Punch list, cleanup, releases, inspection approval, warranty and final payment. | Defines when the job is actually complete. |
Normal down-payment limit
The normal home improvement or swimming-pool down payment cannot exceed $1,000 or 10% of the contract price, whichever is less, excluding finance charges. Special-order materials do not create a general exception.
Progress payments must follow value
The payment schedule should identify the work, materials or services connected with each payment. Payments cannot exceed the value of work performed or materials delivered.
Mechanics Liens, Preliminary Notices and Releases
A homeowner can pay the prime contractor and still face a lien from an unpaid subcontractor, worker or material supplier. Treat preliminary notices as information to manage, not proof that someone has done something wrong.
Track every preliminary notice
Subcontractors and suppliers generally use preliminary notices to preserve potential lien rights. Create a project list showing each company, the work or materials supplied, the notice date and payment status.
Request subcontractor information
Under the 2026 contract-law update, consumers may request subcontractor names, contact details, license numbers and classifications. Compare those license numbers with CSLB before their work begins.
Use joint checks when appropriate
When a subcontractor or supplier has sent a preliminary notice, one protection is a joint check payable to both the prime contractor and the claimant.
Collect the correct lien releases
Conditional and unconditional releases serve different stages. A conditional release normally becomes effective only after payment evidence exists. Do not accept a generic receipt as a substitute for the legally recognized form.
- Ask for a subcontractor and supplier list before work starts.
- Save every preliminary notice.
- Match each claimant to the work or materials delivered.
- Use joint checks where appropriate.
- Collect conditional progress releases with progress payments.
- Collect final releases before final payment.
- Consider timely recording of a Notice of Completion after completion.
Owner-Builder Permit Warning
Signing a permit as owner-builder is not a harmless shortcut. It can shift responsibility for permits, code compliance, workers, safety, payroll, insurance and project integrity to the property owner.
- You assume responsibility for permits and inspections.
- You may be treated as an employer when hiring workers.
- Worker injuries can create insurance and liability exposure.
- You must independently verify subcontractor licenses and insurance.
- You remain responsible for code compliance and project integrity.
Before accepting an owner-builder arrangement, speak directly with the local building department and obtain appropriate legal, insurance and tax advice for the project.
Tool 3: Home Improvement Deposit Calculator
Enter the full contract price. This calculates the normal limit of $1,000 or 10%, whichever is less. It does not decide whether a narrow statutory exception applies.
How to Apply for a California Contractor License
Most first-time applicants use the examination route. Select the entity and classification carefully because the application fee is nonrefundable.
Choose the entity and qualifier
Identify whether the applicant is a sole owner, partnership, corporation, LLC or other eligible entity. The qualifying individual generally must be at least 18.
Select the classification
Choose A, B, B-2 or the appropriate C specialty based on the documented experience and work the business plans to perform.
Document four years of experience
The qualifier generally needs four full years of journey-level, foreman, supervisor, contractor or qualifying owner-builder experience obtained during the previous 10 years.
Submit the original application
Include the current application, experience certification, signatures and the nonrefundable $450 fee for one classification. A returned incomplete application must generally be corrected within 90 days or it can become abandoned.
Complete fingerprints and exams
Follow CSLB fingerprint instructions. Applicants generally take Law and Business plus the applicable trade examination unless an approved waiver applies. A conviction is not an automatic denial; CSLB reviews applicable facts and rehabilitation information.
Submit final issuance requirements
After qualification, submit the initial license fee, contractor bond, any required qualifier or LLC bond, workers’ compensation certificate or allowed exemption, asbestos open-book examination and entity documents.
Wait for the active record
Passing an exam or paying a fee does not by itself create an active license. Verify issuance and active status through CSLB before advertising or contracting as licensed.
Common 2026 fees
| Transaction | Fee | When paid |
|---|---|---|
| Original application | $450 | With the exam or waiver application for one classification. |
| Initial license — sole owner | $200 | When CSLB requests final issuance items. |
| Initial license — non-sole owner | $350 | During final issuance for corporations, partnerships, LLCs and similar entities. |
| Additional classification | $230 | For an additional classification on an existing license. |
| Replace qualifier | $230 | With the applicable qualifier-replacement filing. |
Renew and Maintain a California Contractor License
Licenses generally renew every two years. Renewal depends on entity type, active or inactive status, timeliness, qualifier count and compliance with bond and workers’ compensation rules.
| Renewal type | Sole owner | Non-sole owner |
|---|---|---|
| Timely active | $450 | $700 |
| Timely inactive | $300 | $500 |
| Delinquent active | $675 | $1,050 |
| Delinquent inactive | $450 | $750 |
Renewal checklist
- Verify the live expiration date.
- Confirm CSLB has the correct address.
- Check bond continuity.
- Confirm workers’ compensation or exemption status.
- Review qualifier and personnel changes.
- Use the correct entity and active/inactive fee.
- Recheck the live record after processing.
File a Complaint or Report Unlicensed Work
A CSLB complaint, bond claim, insurance claim, mechanics-lien dispute and civil case use different rules. Do not assume one filing protects every deadline.
| Problem | Best starting route | Evidence to prepare |
|---|---|---|
| Problem with licensed contractor | CSLB construction complaint. | Contract, changes, payments, photos, permits and correction requests. |
| Active unlicensed work | SWIFT or unlicensed-activity referral. | Jobsite, vehicle, names, phone, advertisements, dates and work observed. |
| Possible bond claim | Surety company listed in License Check. | Loss narrative, contract, payment proof, repair estimates and correspondence. |
| Missing permit | Local building department and CSLB permit-violation route. | Address, project scope, permit search and contractor details. |
| Large or complex loss | Qualified California construction attorney. | Complete project file, deadlines, expert reports and insurance documents. |
Build a complaint file
- Signed contract and every change order.
- Saved CSLB license details.
- Invoices, receipts and payment proof.
- Dated photos and videos.
- Permit and inspection records.
- Written requests for correction.
- Repair estimates or expert reports.
- Bond and insurance correspondence.
- A clear chronological project timeline.
CSLB’s consumer contract guide says consumers generally have four years to file a CSLB complaint about a faulty project. Other civil, bond, lien, warranty and contract deadlines may be shorter or different, so act promptly.
CSLB Phone, Office and Contact Help
Use online services for routine license checks. Call when the status, classification, qualifier, application, bond, workers’ compensation or complaint information requires explanation.
Telephone
Monday through Friday, 8:00 a.m. to 5:00 p.m. Pacific Time, excluding state holidays.
Headquarters
9821 Business Park Drive
Sacramento, CA 95827
Mailing address
Contractors State License Board
P.O. Box 26000
Sacramento, CA 95826
Have these details ready
- Contractor license number.
- Exact legal business name.
- Project address and county.
- Classification in question.
- Status or disclosure wording shown online.
- Application fee number for an applicant.
- Complaint confirmation number when applicable.
California Contractor License Check FAQs
Where can I check a California contractor license for free?
Use CSLB’s official License Check page. It supports searches by contractor license number, business name, personnel name, Home Improvement Salesperson registration number and salesperson name.
Can I search CSLB by business name?
Yes. Enter approximately the first 10 to 15 characters of the legal business name, remove commas and periods, and try fewer characters if no result appears.
What format is a California contractor license number?
A California contractor license number contains numbers only and should not exceed eight digits. Remove “CSLB,” spaces, dashes and other text before searching.
What should I verify in a CSLB result?
Check active status, expiration, legal business name, classification, qualifier and personnel, contractor bond, workers’ compensation information and public disclosures where shown.
When is a California contractor license required in 2026?
A license is generally required when the complete project costs $1,000 or more, requires a construction permit, or uses employees or additional workers.
What is the California contractor license bond amount?
The standard contractor license bond is $25,000. It is not general liability insurance and is not a separate $25,000 fund reserved for each project.
Does every California contractor need workers’ compensation in 2026?
Not every no-employee contractor is yet subject to the universal requirement. Coverage is required when employees are used and for specified qualifier or classification situations. CSLB’s March 2026 report states the universal deadline is January 1, 2028.
How much can a California contractor request as a home improvement deposit?
The normal limit is $1,000 or 10% of the total contract price, whichever is less, excluding finance charges. Special-order materials do not create a general exception.
What changed for California home improvement contracts in 2026?
Contracts now include additional email cancellation information, and consumers can request subcontractor names, contact information, license numbers and classifications.
How do I complain about a contractor or report unlicensed work?
Use CSLB’s construction complaint process for project disputes and the unlicensed-activity or SWIFT route for suspected active unlicensed work. Preserve the contract, payments, photos, permits, messages and license record before filing.
Match the License to the Company, Scope and Payment
A license number is only useful when the live CSLB record matches the business offering the work, the classification covers the project and the bond, workers’ compensation, personnel and disclosure information make sense.
Before final payment, confirm permits and inspections, collect appropriate lien releases, complete the punch list and recheck the license status.