Contractor License School in Washington: Do You Need One?

Quick facts: Washington

General or specialty registration: No exam, so no exam prep (RCW 18.27.030)
What L&I requires instead: Notarized application, bond, insurance, $150.20 fee
Trades with exams: Electrical and plumbing certification
Where prep courses apply: Electrician and plumber exams, and other states’ contractor exams
Agency: Washington State Department of Labor & Industries

Fees, rules and rates change, often on July 1 and January 1. Verify every item with the responsible agency before you rely on it.

Short answer: No. Washington does not test general or specialty contractors, so a license school or exam prep course has nothing to prepare you for. L&I registers you on a notarized application, a $30,000 or $15,000 bond, liability insurance and a $150.20 fee. Exam prep is real for electrician and plumber certification, and for contractor exams in other states.

Updated October 12, 2026. Requirements and fees change; confirm with the agency named on this page.

Search "contractor license school Washington" and you get prep courses built for states that test contractors. Washington is not one of them for the basic contractor registration. Before you pay for a course, here is what the state actually asks for and where a school does and does not help.

Is there a contractor exam in Washington?

Not for general or specialty contractor registration. RCW 18.27.030 lists what the application must contain, including the "Type of contracting activity, whether a general or a specialty contractor and if the latter, the type of specialty." There is no examination or experience requirement in the statute. Our page on the Washington contractor license exam goes through the statute in detail.

What L&I requires instead of a test

A notarized application: "All signatures on your application must be original and notarized."
"The required fee of $150.20."
A surety bond "in the sum of $30,000 if the applicant is a general contractor" or "$15,000 if the applicant is a specialty contractor" (RCW 18.27.040).
Liability insurance at the state minimum, a UBI number and a Department of Revenue registration.

None of that is something a school can teach you to pass. It is paperwork, in order. The free Washington roadmap puts it in order for your trade, and how to get a Washington contractor license explains each step.

Where exam prep does apply in Washington

L&I says some trades "have additional requirements for education, examination, and licensing." Two matter most:

Electrical

Electricians hold L&I certificates earned by examination, and an electrical contractor needs "A certified, assigned electrical administrator or master electrician." plus "An original, $4,000 electrical/telecommunication contractor’s surety bond, or assignment of savings account." Exam prep for the electrician or administrator test is a real product.

Plumbing

Plumber certification is exam based. L&I's page explains how "To apply for a new plumber exam or reciprocal certification online" and lists certificates "for journey level, residential, residential service, backflow, or domestic pump or pump and irrigation plumbers." Code prep courses for that exam are legitimate.

What about schools that promise a "Washington contractor license"?

Read what they are selling. If it is business setup help, bond and insurance referrals, or a packet of forms, you are paying for what this site and L&I's own registration page give you free. If it is exam prep, ask which exam: for the 18.27 registration there is none.

If you are coming from a state that tests

Many states require an exam for a contractor license. Washington does not honor those licenses, and it does not test either. You register here on the same paperwork as everyone else. See out-of-state contractors working in Washington.

This guide is general education, not legal advice. Requirements change; confirm with L&I before you act.

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Common questions

Is there a contractor license test in Washington State?

No. RCW 18.27.030 lists what a contractor registration application must contain, and there is no exam or experience requirement. You need a notarized application, a $30,000 or $15,000 bond, liability insurance and the $150.20 fee.

Do I need a class to become a general contractor in Washington?

No class is required. Washington registers general contractors on paperwork, a bond and insurance. Classes exist for electrician and plumber certification exams, which are separate L&I programs.

Which Washington trades have a licensing exam?

Electrical and plumbing. Electricians and electrical administrators hold certificates earned by examination, and plumbers apply to L&I for a plumber exam. Exam prep courses for those are legitimate.

Sources

Official pages checked on 2026-10-12.

About Contractor Lane

Contractor Lane is built and maintained by working home-service operators. Every legal or numeric claim on this page was checked against the official source listed below on 2026-10-12.

General educational information for contractors. Requirements and fees change. Contractor Lane is not a law firm, CPA, insurance agency, or licensing agency. Verify each item with the responsible agency.