California C-7 Low Voltage Contractor License Requirements (2026)

California regulates low-voltage work through two boards. The Contractors State License Board (CSLB) issues the C-7 Low Voltage Systems classification under Business and Professions Code §7000 et seq. and 16 CCR §832.07, authorizing installation of communication, sound, and signal systems operating at 91 volts or less — telephone, intercom, paging, audio/video, nurse call, public address, and structured cabling. C-7 explicitly excludes burglar alarm and fire alarm systems. Burglar alarm, monitored CCTV, access control, and electronic security work falls under the Bureau of Security and Investigative Services (BSIS) Alarm Company Operator (ACO) license under B&P Code §7590 et seq., and the alarm company must additionally hold a C-10 Electrical or C-7 Low Voltage classification with CSLB if installing wiring. Fire alarm installation generally requires a C-10 Electrical contractor; the State Fire Marshal additionally certifies fire alarm technicians under Title 19 §764. Any contract over $500 (labor and materials combined) requires a CSLB license under §7028.

Regulatory Body Profile

Authority over this credential rests with Contractors State License Board (CSLB), which issues and polices it under California Business & Professions Code §7000 et seq. (Contractors State License Law). The CSLB licenses and regulates contractors in 44 license classifications, investigates consumer complaints, enforces contractor license law, and prosecutes unlicensed activity through administrative, civil, and criminal action.

Official portal: https://www.cslb.ca.gov/
Address: 9821 Business Park Drive, Sacramento, CA 95827 (mailing: P.O. Box 26000, Sacramento, CA 95826)
Phone: (800) 321-CSLB (2752) — in California; (916) 255-3900 — outside California

The Eligibility Audit

Eligibility begins with two baseline checks: the applicant must be 18 or older and must provide a valid Social Security Number or Individual Taxpayer Identification Number (ITIN). No California residency requirement.

Good moral character

CSLB conducts a fitness review on every applicant. Felony or misdemeanor convictions substantially related to contracting are reviewed individually under §480.

Background investigation

CSLB requires fingerprint-based DOJ and FBI Livescan background checks for every qualifying individual under §7069. BSIS additionally requires fingerprint clearance for the ACO qualifying manager and every alarm agent.

Experience and Education Standards

At least Four years of journey-level experience in the C-7 trade within the prior ten years under §7068, verified by a qualified individual (employer, supervisor, fellow employee, or other qualified person). At least one year must be at a journey-level (not apprentice or trainee). has to be evidenced and confirmed. Retain payroll, tax, project, or supervisor records, since the board may audit the experience claimed.

Accepted proof of experience or eligibility

CSLB Certification of Work Experience signed by a qualified individual familiar with the work
W-2 statements, pay stubs, or 1099 records
Accredited college transcripts (for education credit)
Trade school, military, or apprenticeship completion certificates
BSIS: Alarm Company Operator manager experience verification covering two years within the prior five

Education substitution

CSLB credits accredited college coursework, technical training, and completed apprenticeships toward up to three of the four years of experience under §7068. The minimum journey-level requirement of one year cannot be substituted.

The Exam Syllabus

Testing is handled by PSI Services LLC under contract to CSLB.. The applicant has to pass each part listed here before the credential is granted:

PSI CSLB C-7 Low Voltage Systems Trade examination — open book, closed book mixed — 115 questions, 210 minutes, passing score 73%
PSI CSLB Law and Business examination — 115 questions, 210 minutes, passing score 73%

Examination fee: $330 application fee + $200 initial license fee at issuance. PSI exam fee included in the application.

Retake policy: Failed parts may be re-taken for a $100 re-test fee per part. Application files remain active for 18 months.

Bonding, Insurance & Financial Security

A $25,000 surety bond, in the form prescribed by the CSLB, must be posted as a condition of licensure.

General liability

CSLB does not impose a state minimum general liability for C-7. Most owners contractually require $1,000,000/$2,000,000. The $25,000 Contractor's Bond is mandatory under §7071.6.

Workers' compensation

Workers' compensation is mandatory under Labor Code §3700 for any C-7 contractor with employees. Sole proprietors with no employees may file an exemption.

Additional financial requirements

CSLB does not require a financial statement for C-7 but the LLC fee structure requires an additional $100,000 LLC Employee/Worker Bond if the entity is an LLC.

Schedule of Fees

Fee	Amount
Application (non-refundable)	$330
Initial license	$200
Renewal (every 2 years)	$450

Renewal and Continuing Obligations

The California C-7 Low Voltage Systems Contractor (and BSIS Alarm Company Operator for security work) runs on a 2 years renewal cycle. The current renewal fee is $450. C-7 renews every two years. Renewal fee is $450 active or $300 inactive. A delinquent license may be renewed within five years by paying back fees plus 50% penalty; after five years the license is null and the applicant must re-test.

Continuing education: CSLB does not require continuing education for the C-7. BSIS ACO renewal requires 8 hours of approved continuing training every two years.

Downloadable Asset

2026 California Low Voltage License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Out-of-State Reciprocity

For this classification, California does not recognize the NASCLA Accredited Examination.

Reciprocal State	Accepted Exam	Conditions
Arizona	C-7 trade waiver	CSLB and Arizona ROC have a bilateral C-7 / CR-7 reciprocity agreement; the Law and Business exam is still required.
Nevada	C-7 trade waiver	CSLB and Nevada NSCB recognize active C-7 / C-2 contractors.
Utah	Trade waiver	CSLB and Utah DOPL bilateral reciprocity for active classifications.

CSLB reciprocity covers the trade exam only; the Law and Business exam is always required. BSIS ACO licenses are not reciprocal.

Weighing more than one jurisdiction? The national hub compares Low Voltage license requirements in every state — exam, bond, fee, and experience thresholds side by side.

The Application Roadmap

Confirm scope. C-7 covers cabling/sound/intercom/paging up to 91 V. Burglar alarm = BSIS ACO + C-7 or C-10. Fire alarm = generally C-10 plus State Fire Marshal certification.
Document four years of journey-level experience. Compile CSLB Certification of Work Experience signed by a qualified individual covering four years (one at journey-level) within the prior ten.
Submit the CSLB C-7 application. File the application with the $330 fee, experience certification, and qualifying individual designation.
Pass the PSI Law and Business and C-7 Trade examinations. Score 73% or better on each. Both exams are 115 questions in 210 minutes.
Submit fingerprints and clear DOJ / FBI Livescan. Schedule Livescan through a CSLB-approved vendor; results return to CSLB in 30 – 60 days.
Post the $25,000 Contractor's Bond and pay the $200 initial license fee. File the contractor bond with CSLB and pay the issuance fee. LLCs additionally post a $100,000 Employee/Worker Bond.
Apply for BSIS Alarm Company Operator license (if doing burglar alarm). File the BSIS ACO application with $400 fee, manager experience verification, fingerprint clearance, and proof of $1,000,000 ACO insurance.
Receive the credentials and begin work. CSLB issues the C-7 within 30 – 60 days of bond posting. BSIS ACO issuance adds 60 – 90 days. C-7 renews every two years.

Where Applications Stall

These are the recurring mistakes that most often delay or reject a California Low Voltage application, based on the official instructions cited here.

Treating C-7 as a burglar alarm license

C-7 is communication, sound, and signal only. Installing monitored burglar alarms without a BSIS ACO license is a misdemeanor under §7590.1.

Forgetting fingerprint Livescan

CSLB will not issue a license without DOJ / FBI Livescan clearance for every qualifying individual. Many applicants schedule fingerprints late and stall their license by 30 – 60 days.

Missing the LLC bond

CSLB requires LLC entities to post a $100,000 LLC Employee/Worker Bond in addition to the $25,000 Contractor's Bond. Sole proprietors and corporations are exempt.

Confusing C-7 with C-10

C-7 cannot tie into 120 V building electrical service for branch wiring. Once the installer crosses into line voltage, a C-10 Electrical Contractor is required.

Missing renewal by more than five years

A C-7 not renewed within five years is automatically cancelled and the applicant must re-take both exams to reinstate.

Pre-Application Checklist

Ahead of submission to CSLB, confirm every item on this short list:

☐ Four years of CSLB-documented journey-level C-7 experience
☐ CSLB C-7 application with $330 fee
☐ PSI C-7 Trade exam pass at 73%
☐ PSI Law and Business exam pass at 73%
☐ DOJ / FBI Livescan fingerprint clearance
☐ $25,000 CSLB Contractor's Bond
☐ Workers comp coverage or sole proprietor exemption
☐ BSIS Alarm Company Operator (if doing burglar alarm)

Recommended Study Materials

The following references are cited by the regulator, used in the application process, or commonly used to prepare for the trade scope. Listed for reader convenience; CLR receives no compensation for these recommendations.

CSLB Contractor's License Law and Reference Book — CSLB. Required reference for the Law and Business exam. Free download from cslb.ca.gov.
PSI C-7 Low Voltage Systems Candidate Information Bulletin — PSI / CSLB. Official content outline for the C-7 Trade exam.
NEC Articles 725, 760, 770, and 800 — NFPA. Technical reference covered on the C-7 Trade exam.

Other California Trade Licenses

Looking at a different trade? CLR also publishes these California licensing guides:

Common Questions

Does the C-7 cover burglar alarm or fire alarm work?

No. C-7 explicitly excludes burglar alarm and fire alarm. Burglar alarm requires a BSIS Alarm Company Operator (ACO) license plus C-7 or C-10 wiring authority. Fire alarm generally requires a C-10 Electrical contractor.

What voltage limit applies to the C-7?

91 volts or less. The C-7 covers communication, sound, and signal systems operating at no more than 91 volts to ground.

How much experience does CSLB require?

Four years of journey-level experience within the prior ten years, verified by a qualified individual familiar with the work. Up to three years may be substituted with accredited education or apprenticeship credit.

Is the $25,000 contractor bond mandatory?

Yes. Every CSLB contractor including C-7 must post a $25,000 Contractor's Bond under §7071.6 before the license is issued. LLC entities additionally post a $100,000 Employee/Worker Bond.

How often does the C-7 renew?

Every two years. Active renewal is $450; inactive renewal is $300. CSLB does not require continuing education for C-7.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

Verified 2026-05-09 · Next scheduled review 2026-08-07