Washington Low Voltage (06 / 06A) Contractor License Requirements (2026)

The Washington State Department of Labor and Industries (L&I) Electrical Section issues several specialty electrical contractor classifications for low-voltage work under RCW 19.28 and WAC 296-46B. The 06 Telecommunications specialty covers telephone, data, video, and structured cabling. The 06A Residential Maintenance and Service specialty covers residential limited energy. The 06B Pump and Irrigation specialty covers irrigation control wiring. The 04 Commercial / 04A Residential limited energy specialty (also known as the Limited Energy System Specialty) covers commercial fire alarm, burglar alarm, intercom, sound, and energy management. Each specialty contractor license requires an Electrical Administrator on file and is paired with a separately-credentialed 06 / 04 specialty electrician (journey-level) for each technician on payroll. Burglar and fire alarm work also requires the L&I 06 specialty plus, for monitored alarm contracting, a Department of Licensing Alarm Monitoring Company registration under RCW 18.160.

Regulatory Body Profile

Washington State Department of Labor and Industries (L&I) is the statutory authority responsible for issuing and enforcing this license under Revised Code of Washington Chapter 18.27 (Contractors); Chapter 19.28 (Electricians); Chapter 18.106 (Plumbers). L&I registers contractors statewide, certifies individual electricians and plumbers, administers prevailing wage, and conducts complaint investigations.

Official portal: https://lni.wa.gov/licensing-permits/contractors/
Address: 7273 Linderson Way SW, Tumwater, WA 98501
Phone: (360) 902-5226

The Eligibility Audit

The threshold requirements are straightforward: age 18 or above, plus a valid Social Security Number. No Washington residency requirement.

Good moral character

L&I reviews criminal history on the contractor application. Felony convictions involving theft, fraud, or building trades may result in denial under RCW 19.28.131.

Background investigation

L&I performs an administrative background review. Fingerprint background checks are not generally required for the 06 / 04 specialties.

Experience and Education Standards

The experience bar is 2 years of 04 / 06 Specialty Electrician (journey-level): 4,000 hours of supervised limited energy or telecommunications experience under a Washington 06 / 04 trainee certificate, plus 48 hours of approved classroom training. Specialty Electrical Administrator (06 / 04): two years of journey-level experience as a 06 / 04 specialty electrician plus passing the L&I Administrator examination., and it must be backed by verifiable records — typically payroll, tax, project, or supervisor documentation covering the claimed period.

Accepted proof of experience or eligibility

L&I Affidavit of Experience (Form F500-085-000) signed by each supervising 06 / 04 administrator
L&I trainee certificate hour records
Approved classroom training completion certificate
Out-of-state license or NICET certificate (for hour evaluation)

Education substitution

L&I credits an approved Washington telecommunications or limited energy apprenticeship in lieu of accumulated trainee hours. Two-year electrical or electronics technology degrees may earn up to 1,000 hours of credit on the affidavit.

The Exam Syllabus

The exam, administered by Prometric under contract to Washington L&I., breaks into the parts shown below — all must be passed before licensure:

L&I 06 Telecommunications / 04 Limited Energy Specialty Electrician (journey-level) examination — open book, NEC and WAC 296-46B — 80 questions, 240 minutes, passing score 70%
L&I Specialty Electrical Administrator examination — business, law, and supervisory rules — 50 questions, 120 minutes, passing score 70%

Examination fee: $87 examination fee per attempt paid to Prometric.

Retake policy: Failed exams may be re-taken after 30 days by paying a new $87 fee. Each application file remains active for two years.

Bonding, Insurance & Financial Security

A $4,000 surety bond, in the form prescribed by the L&I, must be posted as a condition of licensure.

General liability

L&I requires a minimum $250,000/$500,000 commercial general liability with $50,000 property damage for electrical contractors under RCW 19.28.041. Most owners contractually require $1,000,000/$2,000,000.

Workers' compensation

Workers' compensation through the Washington State Fund (L&I) is mandatory for all employers under Title 51 RCW.

Additional financial requirements

L&I does not require a financial statement. The $4,000 surety bond and the liability minimums are the financial protection.

Schedule of Fees

Fee	Amount
Application (non-refundable)	$326
Examination	$87
Initial license	$326
Renewal (every 3 years)	$326

Renewal and Continuing Obligations

The Washington 06 Telecommunications / 06A Limited Energy / 06B Pump and Irrigation Specialty Electrical Contractor runs on a 3 years renewal cycle. The current renewal fee is $326. Specialty contractor license, administrator certificate, and journey-level certificate all renew every three years on independent cycles. Letting any one lapse stops work statewide.

Continuing education: 24 hours of L&I-approved continuing education each three-year cycle for the journey-level specialty electrician, including 8 hours of code update.

Downloadable Asset

2026 Washington 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, Washington does not recognize the NASCLA Accredited Examination.

Reciprocal State	Accepted Exam	Conditions
Idaho	Specialty journey-level reciprocity	L&I and Idaho DBS recognize each other's 06 / 04 journey-level certificates after experience verification.
Oregon	Limited reciprocity	L&I and Oregon BCD have a limited reciprocity for limited energy technicians on a case-by-case basis.

L&I has formal reciprocity with Idaho and case-by-case recognition with Oregon. NICET is recognized for fire alarm work but does not waive the 06 / 04 exam.

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

Pick the specialty. 06 = telecom and structured cabling. 04 = limited energy (alarm, fire alarm, intercom, sound). 06A = residential maintenance. 06B = pump and irrigation.
File the L&I trainee certificate and accumulate hours. Register as a 04 / 06 trainee with L&I before doing any installation work. Accumulate 4,000 hours under a licensed administrator.
Complete the 48-hour classroom requirement. Take L&I-approved classroom training each year of trainee status; full requirement is 48 hours over two years.
Pass the 04 / 06 Specialty Electrician journey-level examination. Score 70% on the open-book Prometric exam. Receive the journey-level specialty electrician certificate.
Pass the Specialty Electrical Administrator examination. Two years after journey-level certification, take the Administrator exam to qualify a contractor business.
File the Specialty Electrical Contractor license application. Submit the L&I application with $4,000 surety bond, $250,000/$500,000 general liability certificate, workers comp account, and Administrator on file.
Register every technician with L&I. Each on-the-job technician must hold a current 04 / 06 trainee or journey-level certificate. L&I audits payroll against certificate holders.
Receive the contractor license and begin work. L&I issues the specialty contractor license. Renews every three years.

Where Applications Stall

The following pitfalls summarize the issues most likely to delay, return, or derail a Washington Low Voltage application based on the published board instructions and source materials cited on this page.

Working without a trainee certificate

Every installer must hold a current L&I trainee or journey-level certificate before performing any 04 / 06 installation work. L&I audits jobsites and issues citations on the spot.

Missing the administrator on the contractor license

A specialty contractor license requires a designated Specialty Electrical Administrator. Losing the administrator (death, departure, license lapse) suspends the contractor license within 90 days.

Confusing 06 with 04 scope

06 cannot do alarm or fire alarm; 04 cannot do telecommunications cabling. Most low-voltage businesses need both specialties.

Skipping the alarm monitoring registration

Monitoring alarm signals requires a Department of Licensing Alarm Monitoring Company registration under RCW 18.160 separate from the L&I contractor license.

Letting workers comp lapse

Washington requires State Fund workers comp for every employee. Lapses are reported to L&I within days and trigger an automatic contractor license suspension.

Pre-Application Checklist

Before submitting to L&I, the applicant should have each of the following ready:

☐ 04 / 06 trainee certificate and 4,000 documented hours
☐ 48 hours of approved classroom training
☐ L&I Specialty Electrician journey-level exam pass certificate
☐ L&I Specialty Electrical Administrator exam pass certificate
☐ L&I Specialty Electrical Contractor application with $326 fee
☐ $4,000 surety bond
☐ $250,000/$500,000 commercial general liability
☐ Washington State Fund workers comp account

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.

National Electrical Code (NFPA 70), Washington-adopted edition — NFPA. Articles 725, 760, 770, and 800. Open-book reference at the L&I exam.
WAC 296-46B (Washington Electrical Safety Standards) — Washington L&I. Washington amendments to the NEC; required for the journey-level and administrator exams.
NFPA 72 — National Fire Alarm and Signaling Code — NFPA. Required reference for the 04 Limited Energy fire alarm scope.

Other Washington Trade Licenses

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

Common Questions

What is the difference between the 06 and 04 specialties?

06 Telecommunications covers structured cabling, telephone, data, and video. 04 Limited Energy covers alarm, fire alarm, intercom, sound, and energy management. Many contractors hold both.

How many hours does Washington require for the journey-level certificate?

4,000 hours of supervised work as a registered 04 / 06 trainee plus 48 hours of approved classroom training over two years.

Do I need a separate license for monitored alarm services?

Yes. Monitored alarm services additionally require a Washington Department of Licensing Alarm Monitoring Company registration under RCW 18.160 in addition to the L&I 06 / 04 contractor license.

Does Washington recognize NICET?

NICET Fire Alarm Systems certification is recognized for plan review and acceptance testing on commercial fire alarm work, but it does not substitute for the L&I 04 specialty exam.

How often does the 04 / 06 contractor license renew?

Every three years. The journey-level certificate renews every three years with 24 hours of approved continuing education.

Primary Sources

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

Verified 2026-04-20 · Next scheduled review 2026-07-19